Great video. I had to rely on "jump" starting the battery pack and pressing the S1 switch to get my BMS happy again. Saved me $250 bucks for resurrecting my Ninebot S.
Knowing how to take these apart is so easy it makes sense to recycle them - take the old cells out when they are tired and replace them with new ones - perhaps even of higher capacity. Just make sure you do a datasheet search on the current cells to see their discharge C rating, and meet or exceed it with the new ones.
That’s great! As I was making that video, the engineer in me was saying “don’t press that button”. I’ve learned to not push buttons when I’m not sure what they do. But I’ve since received many comments that this button appears to solve the problem and that’s really great to hear that it’s going to be a simple fix now. Thanks for the reply, and happy gliding!
My S MAX can’t turn on and plug in charge also no response, the LED on the charger stay green. I took out the battery and test the voltage is 59.4 and the LED on the battery flashing blue. Is the battery dead? Thanks.
59.4 V is fully charged up. You have a different issue going on. Maybe the switch to turn the unit on isn’t actually working. But the battery is just fine.
So I took everything apart like you said and tested B- and B+ and it showed about 59. If 59 is the goal will it still charge the remainder of the batteries in the pack since they’re showing less than +/-20? My charger also shows solid green indicating the battery is fully charged. Should I disregard the green light on the charger and continue to charge B- and B+ in hopes that it charges the other batteries that are less than?
If you’ve got 59 V at B+ and B- that’s the measurement of the entire pack, which is good. You might try pressing that button labeled S one and see if that does anything. But it seems you have good batteries which are not below the threshold that most other people have encountered. When the batteries go below about 40 V or 42 V, somewhere around there, the system goes into a hibernate or standby mode. Pressing that button seems to bring it out of that mode so you might give it a try. But it looks like you have a good battery pack and your problem likely is elsewhere.
Thank you, thank you, thank you.🙏 I jumped the charger to the battery for a couple days and it wouldn't take anymore charge. Light on charger stayed green. Battery showed 30ish volts in terminals. I disassembled the battery and got 60v at the +&- on board, pushed the reset and bam. Green light and 60v at the terminals. Can't thank you enough!!!
@@jjqchomes8443 In the video I showed how I connected the charger plus and minus output to the battery plus and minus directly. I didn’t have to do anything special with the charger because it puts out a regulated voltage. I just used some small gauge wire, I think it was 22 gauge solid core copper wire to make the connection.
couldn't just do everything you did. but instead of taking the cover off the battery pack, connect the leads to the battery output ports on the outside of the pack?
MY last resort, going for it. Since mine is dead, won’t charge, and the other option was to bypass battery management charging and charge batteries directly. Going to try the S1 switch first. Segway won’t respond to my emails and the replacement batteries are out of stock. Has anyone bought a replacement battery pack and if so, is there any instructions from Segway to reset battery system? Or is it just plug and play or due to out of date warranty sticker, we have to send it back anyways? I haven’t rode this Segway in a long time since purchasing it and letting it sit without charging made it worthless over time.
Got mine new, the battery was Doa, called segway they sent a new one, and it was just a simple quick battery swap, that was 5 years ago, now mine started doing the beeping thing he spoke about in the beginning of the video after a year of not riding, but i just left the charger beeping for 30 minutes and it started charging by itself, no fix needing.
Thank you so much for this video! I tried and charged my battery, it shows holdeing 58.6 V on B+ and B- but not on two main banana port in the fornt! I followed you and pushed the reset button, one red blink comes in 2s and nothing happens and front banana ports shows 5.3v! Can you instruct how to reset through that RST pin you pointed? Appreciated in advance!
It sounds like your batteries are showing near full voltage however you’re not getting it to the output port. Maybe look for a blown internal fuse or a loose connection, because I doubt a reset would fix this problem of yours. But if you want to give it a go, just briefly touch the reset pin to ground.
Thank you for your reply! I did that and grounded the RST pin to the wall plug and nothing happened as you said! I charged it for three more hours from B+, B- and now charged to 59.6v but 5.4 on banana port! I don’t see any fuse… any other idea? Thank you again!🙏
It sounds like your batteries are just fine, but something is interrupting the voltage from getting to the output port. Usually that would be a fusible link, which is nothing more than a large fuse. It might not be obvious but check the red positive wire very carefully for either a lump under the wire that could be an in-line fuse, or maybe it lands somewhere on another circuit board and goes through a fuse type component or some type of circuit breaker before it gets to the output where you are trying to measure the voltage and only getting 5 V.
Thank you again for your reply and attention! I owe you please provide me with a PayPal account so that I can thank you! I short the rst-gnd and nothing changed but checked some voltage may help you solve the problem. B+B- 59.5v B+ and banana- 5.4V B- and banana + 59.5v Banana + and banana - 5.4v It seems banana - line is problematic. My banana plug and cables glued with a white thick glue and I can’t see any fuse there grossly, but didn’t open it yet scared of breaking some piece/board.
Looks like you narrowed it down to the ground wire from the battery to the banana post as being the problem. So there are one of two possibilities. Either there is some fuse that is blown, and the fuse could look like a piece of wire if it’s a fusible link. It might not be what you are expecting to see like a thin piece of wire inside of a glass tube. Sometimes fusible links are just a certain thickness of wire. The other possibility is that there is some electronic switch that breaks the connection from the negative output in a case where the battery isn’t installed or something like that. It could be some type of safety or protection feature. Since I don’t have my battery open I can’t see the circuitry there. Don’t be afraid to peel away the white goo. It’s just there for vibration protection so the wires won’t break out of the board while you’re riding it. You can always replace it with a hotmelt glue gun, that’s all it is. You could also take a short piece of wire and bridge the connection from B minus to the negative output post and then see if you can measure the voltage there. But if there is a safety circuit engaged keeping the voltage from appearing at the negative post that still wouldn’t solve the problem. Keep looking, you will find where the connection is broken by following that wire very carefully.
Just got 14 of these at auction from sams club. 10 don’t do anything if you plug the charger in. Tested the batteries some doubles are only at 1.3v others are 3.1 . Doing the forced jump wish me luck will update when done.
You could probably start a business if you get some of those running! Good luck, read through some more of the comments in this thread and you will see what other people did that worked.
It appears that fortvalor did not survive this battery revival experiment... we honor his valiant attempt and unfortunately his ultimate sacrifice in the name of science... rest easy brother
After I removed the battery I noticed there's a small black plastic part, about 1/2" wide and 4" long. Make sure it's out of the way and fits in the groove completely. Otherwise the battery will not make proper connection with the main board and the pro will not turn on
Having this problem now, I ended up jumping the battery. A green light came on and the Segway booted up and was throwing an error code. Left it for the day and the Segway would not boot up again, so I jumped the battery again. I have 58v coming from b+b- inside the battery and 28v from the female banana adapter. There is no light on the battery, only when plugging it in via the charging port it flashes red 4 times. When battery is put back on the Segway the interface will not turn on. I’ve pushed the s1 and grounded the reset pin. Any ideas?
You didn’t say how long it’s been sitting unused so I’m not sure of the battery state. You could check the condition of the battery by leaving it directly connected to the charger as shown in the video for at least five hours. Due to the output voltage of the charger being regulated at a safe value, it would not be a problem to leave it on even overnight or longer. I would test the actual condition of the battery by placing a slight load on it. It could be the battery isn’t really holding a charge or some number of cells are bad. if possible, try to get your meter probes onto each of the battery contacts and make a note of the voltage at each battery and look for some weak sisters. But you need to do that while the battery has a load on it like from being turned on. In my garage I would take four, 12 V car headlights and put them in series and put them across the battery and make it do some work. Regarding the 28 V, that’s exactly half of the battery voltage but I’m not sure of the electrical circuit at that point. That might be normal or it might not. There could be a fuse or some other circuit on the battery output that may have blown such that the batteries themselves are OK but power is not making it to the output connector. That would require a further investigation of the printed circuit board but I don’t have a schematic for it.
Hey I have the same blinking light when plugged to the charger. Altough my circuit board is green and looks really different to yours (european model I supose?) and there seems to be no switches on the board... So any tips on that? Thaks
I’m not familiar with any other Segway circuit boards, but one thing you could look for is a place for the switch on the circuitboard but they didn’t actually populate that part. However the two little conductive pads for S1 might be there. If you find it you could take a piece of wire and short out those two pads momentarily. You might also carefully look around for a reset button or switch or two pads that are close to each other that are labeled reset or RST, and do the same thing. Did you try charging up the battery using the method I showed? That might also help.
I did find the RST labeled but other than that even the labels seem to differ. I've been trying to charge it directly to the female banana plugs with bare wires but it just blinks red as it would from the actual charging. I'll open it up once more to see If there are any s1 labels. My phone actually finds the bluetooth connection momenteraly as the whole thing is charging wich tells me there is some Life in it
Its a 3mm hex key not a 5mm hex key and you can forego all pf this by leaving the pack intact and charging through the output that resets the battery and it pulls it out of hibernation mode
Good to know, thank you for contributing. Sometimes you don’t discover things until you get deep into it. And initially I was expecting to find some bad batteries in the pack, but in any case this thread has added a lot to the base of knowledge and has helped people get their dead Segways going again. Cheers!
Do NOT avoid the temptation, PUSH THAT BUTTON, I bought my ninebot (cheap) "dead on arrival", when I pushed the button everything came back to life. It seems that this button resets the power management board, don't avoid it.
My philosophy is 'first do no harm'. If all else failed I'd push it. But when I don't know what I'm doing I do it very carefully and don't just start pushing buttons. Having said that, thanks for letting us know that it worked for you. It may help other people. I added your comments to the video at the part when I pointed out the switch.
Today I had the problem, that my charger did not charge the battery, because it was drained too low. I just removed the batterie and connected the charger as you did, but without removing the batterie cover. I just used the 2 bigger sockets that are exposed to the outside. Just waited a few minutes until the red blinking LED on the batterie turned to green, then plugged in the charger normaly and was able to fully charge it. I think opening the batterie only makes sense, if what I described does not work any more. Than you can give the S1 button a try.
That’s a good solution, and would probably work for most people. Since it has regenerative braking it doesn’t have a diode in the output of the battery connector so there is every reason to believe that should work.
@@robertmorgan2145 Yes, it does work. I did it today. I have to mention, that I still had about 56V on my batterie. So a lot more than those in the video. My Mini Pro could also be put on and the app showed about 5% of batterie status. The only problem was, that the charger did not start charging. Charger LED always stayed green. After having pin 1 and 2 of the charger been connected to the 2 big sockets on the batterie for about 5 minutes, the charger accepted the batterie at the charging port and I was able to charge it normally.
This actually worked to bring both of my Mini Pros back to life. It wasn't hard at all. I charged both of my batteries but it still didn't work. UNTIL I pushed the reset button. After I did that the green light started flashing and then went to solid green. I re-installed the battery pack and it now works perfectly. Video is a little long winded in his explanation but the information worked perfectly.
Yeah, when I made the video, I was expecting to do a complete battery pack teardown. I wasn’t expecting to find a single reset switch. But anyway glad it worked out.
@@kevenramos7871 the little black button that says reset is the one that we are all talking about here. There doesn’t seem to be any harm in pressing it, and it seems to reset the battery controller to allow a drained battery to charge.
This is probably a dumb question, but how do you press the button. I see it looks like a small pin prick sized hole. Do you just stick a needle or something in there?
Thanks for the video. My Segway has been down for 2 years. I cracked the battery open as instructed ( used a hammer and screwdriver to gently tap all the way around) I pressed that BUTTON and the green light started flashing. I put the battery back in and it says it full charged and its working now. Thanks again.
That’s great to hear! I’m trying to find a way to update the video and tell people to go ahead and push that button because it does indeed seem to solve the problem. I was just hesitant at the time I made the video because I wasn’t sure what it would do. I figured with my luck it would erase the motherboard or something.
7:05 - The "SWM" pin is probably "square wave modulation"... similar to PWM (pulse-width modulation). It's just a signaling mechanism. The other 3 are of course power, ground, and reset... so the 4th pin is the communication pin.
It could be. I didn’t take the time to put my scope on it which would probably give the answer. Typically the reference designator S, or SW refers to a switch. But since that is a test header it’s a little bit unclear what SWM stands for.
So I put my Segway into storage around 2020 and the battery drained. I tried charging now in 2023 and the board is dead completely. I just opened up the battery and pressed the S1 button but nothing happened for me? Any suggestions to bring it back to life? thank you
If you watch my entire video I show you how to hook up the charge leads from the charger directly to the battery terminals. That bypasses any charge circuitry that might be between the charge jack and the battery pack itself. If the battery pack is anywhere above maybe 40 V or so it should come back to life.
Good to know. Is there a way to hook up a spare battery to extend your ride distance on these, or do I need to take a spare battery and hex wrench and swap them out? I'm only getting like 5 miles off road distance with knobby tires.
Sounds like that battery is down to less than 50% capacity. I would either use it for shorter trips or if you really have fun on the Segway just get a new battery.
Hi! I have done this and it worked perfectly. But after a day, I tried to charge it again. It said it was charging, but when u took it off it was beeping all the time and showing the same 10% battery percentage. Tried it again, same thing. Does any one of you know what could be wrong? I really don’t want to spend 300€ on a battery replacement. Thank you.
That sounds like some sort of internal electronics failure possibly in the charge circuit. That is rare. Maybe try charging the battery manually a couple of times yourself and see if it goes away.
@@robertmorgan2145 hi! Thank you so much for replying. What do you mean by charging manually? Right now when I charge it, it looks like it’s charging (bars going up and down), but the light on the charger is still green. How would I charge it manually? Thanks again!
just tried this and got the battery to charge but the unit still wouldnt turn on, no green light tried mounting it a few times. going to try that switch!
@@rjmorgansd I'm working on two of them. The one I charged last night is at home. I'm at work now and charged the other and pressed the button. Green LED is on! I'll press the switch on the other one when I get home. This video was incredibly helpful!
@@tomcatpilot15 glad to hear it! I think you’re going to be in luck. As long as the battery didn’t reach a critically low level to where the battery cells reversed themselves, pressing that S1 button seems to reset the battery controller and get things working again.
@@tomcatpilot15 you should be able to recover that pack just fine. 42 V is a good voltage. If it was down around the 20s or 30s I would be concerned about it.
That’s beyond the scope of this discussion. However in general yes you can parallel lithium ion batteries, however it requires them to be very closely matched in charge level and capacity. I assume you are talking about charging the batteries individually in the normal fashion, and then connecting them together in parallel to give greater capacity. Something like that could work.
@@robertmorgan2145 sorry for asking on this video but you seem like u know alot of how these things work,if i buy a spare s max battery would u help me figure out a way to do it?
I bought one same problem dead batteries but be careful about jumping you could seriously overheat a short circuit you're bored I pulled the battery pack out and charged with a charger designed for RC cars and lithium on batteries I charge them in packs of 7.2 so when I put them back in at work just fine it took me about 3 days to charge everything but now it works great so be careful about just shorting and jumping batteries that way thanks for allowing me to comment and a good day to all
okay so thank you so much it is freaking worked!!!! I had this problem 2 years ago and never saw this video and threw away 5,700mah battery. but now because of you I have another 5700 mAh battery and it didn't work...but now it does!!!! so thank you so very much for your amazing video if I could shake your hand I would
Hey that’s great to hear! You made my day. I kind of made that video just on a whim because when I opened up the Segway I didn’t know what to expect. But I had a good idea I could find the problem. It seems to be helping a lot of people and I’m really glad to hear that you are back in business now. One word of caution, be careful on that Segway. The other day I ran into a raised portion of a sidewalk and instead of just bumping up a little bit like every other time, the thing threw me up and backwards into the air and I landed on my back and hip on the sidewalk. Ended up in the emergency room. I’ve got hundreds of miles on this thing and that’s the first time anything like that has happened. And it was instant. Ride carefully!
Thank you so much for this video !!! You are a great instructor! I followed all the steps and it brought my Segway back to life. It did not initially work because I believe the battery became too hot . So if it doesn't fire up right away, I recommend you let it cool down for a couple hours before you try to power it up again.
So glad to hear that! I like stories with happy endings. Enjoy it once again and be sure to put it on charge at least every couple of months when you aren’t using it.
Got the ninebot for 30 bucks bought charger amazon 30 bucks, no charge, then took battery off to jump + - terminals.... nothing then opened battery casing as show in this video, pressed S1 button HEY PRESTO!!! green light flashing tested terminal 60v connected charger green flashing light turn red. Thanks for the information i am a happy camper ;)
Great video. I had to rely on "jump" starting the battery pack and pressing the S1 switch to get my BMS happy again. Saved me $250 bucks for resurrecting my Ninebot S.
That’s outstanding! Isn’t it great when you can bring something back to life? Hope you have some fun glides.
Holy Moly! This is working for a dead Segway Pro I just found for free on FB.
Fast. Simple. Segway baby!
I love to hear the success stories, thank you for posting!
Knowing how to take these apart is so easy it makes sense to recycle them - take the old cells out when they are tired and replace them with new ones - perhaps even of higher capacity. Just make sure you do a datasheet search on the current cells to see their discharge C rating, and meet or exceed it with the new ones.
Thanks for the video. Just press the reset bottom then My Segway miniPro has back to alive.😁😁👍👍
That’s great! As I was making that video, the engineer in me was saying “don’t press that button”. I’ve learned to not push buttons when I’m not sure what they do. But I’ve since received many comments that this button appears to solve the problem and that’s really great to hear that it’s going to be a simple fix now. Thanks for the reply, and happy gliding!
Should I press the S1 or reset?
@@Nadeaux4 Reset only works for me. Good luck.
Try S1 first
Do you know where I can purchase the 4 prong charger? We lost ours and can't charge the Ninebot
could you tell me where to buy the charger please
My S MAX can’t turn on and plug in charge also no response, the LED on the charger stay green. I took out the battery and test the voltage is 59.4 and the LED on the battery flashing blue. Is the battery dead? Thanks.
59.4 V is fully charged up. You have a different issue going on. Maybe the switch to turn the unit on isn’t actually working. But the battery is just fine.
So I took everything apart like you said and tested B- and B+ and it showed about 59. If 59 is the goal will it still charge the remainder of the batteries in the pack since they’re showing less than +/-20? My charger also shows solid green indicating the battery is fully charged. Should I disregard the green light on the charger and continue to charge B- and B+ in hopes that it charges the other batteries that are less than?
If you’ve got 59 V at B+ and B- that’s the measurement of the entire pack, which is good. You might try pressing that button labeled S one and see if that does anything. But it seems you have good batteries which are not below the threshold that most other people have encountered. When the batteries go below about 40 V or 42 V, somewhere around there, the system goes into a hibernate or standby mode. Pressing that button seems to bring it out of that mode so you might give it a try. But it looks like you have a good battery pack and your problem likely is elsewhere.
Thank you, thank you, thank you.🙏 I jumped the charger to the battery for a couple days and it wouldn't take anymore charge. Light on charger stayed green. Battery showed 30ish volts in terminals. I disassembled the battery and got 60v at the +&- on board, pushed the reset and bam. Green light and 60v at the terminals. Can't thank you enough!!!
Great! You are now an expert at Segway batteries!
How did you jump the charger? i hit reset and nothing except red light inside on board?
@@jjqchomes8443 In the video I showed how I connected the charger plus and minus output to the battery plus and minus directly. I didn’t have to do anything special with the charger because it puts out a regulated voltage. I just used some small gauge wire, I think it was 22 gauge solid core copper wire to make the connection.
couldn't just do everything you did. but instead of taking the cover off the battery pack, connect the leads to the battery output ports on the outside of the pack?
You could certainly try that. Just make sure you get the polarity correct.
Wht do u do when it starts to die fast cus mine keeps doin tht on gokart mode
Tht means yr batt is old, tired or ded.
@@robertmorgan2145 it's crazy how wen I only hav like 4 month with it
MY last resort, going for it. Since mine is dead, won’t charge, and the other option was to bypass battery management charging and charge batteries directly. Going to try the S1 switch first. Segway won’t respond to my emails and the replacement batteries are out of stock. Has anyone bought a replacement battery pack and if so, is there any instructions from Segway to reset battery system? Or is it just plug and play or due to out of date warranty sticker, we have to send it back anyways? I haven’t rode this Segway in a long time since purchasing it and letting it sit without charging made it worthless over time.
Got mine new, the battery was Doa, called segway they sent a new one, and it was just a simple quick battery swap, that was 5 years ago, now mine started doing the beeping thing he spoke about in the beginning of the video after a year of not riding, but i just left the charger beeping for 30 minutes and it started charging by itself, no fix needing.
Hi, am Ali from Uganda I need a charger for ninebot s
Thank you so much for this video! I tried and charged my battery, it shows holdeing 58.6 V on B+ and B- but not on two main banana port in the fornt! I followed you and pushed the reset button, one red blink comes in 2s and nothing happens and front banana ports shows 5.3v! Can you instruct how to reset through that RST pin you pointed? Appreciated in advance!
It sounds like your batteries are showing near full voltage however you’re not getting it to the output port. Maybe look for a blown internal fuse or a loose connection, because I doubt a reset would fix this problem of yours.
But if you want to give it a go, just briefly touch the reset pin to ground.
Thank you for your reply! I did that and grounded the RST pin to the wall plug and nothing happened as you said! I charged it for three more hours from B+, B- and now charged to 59.6v but 5.4 on banana port! I don’t see any fuse… any other idea? Thank you again!🙏
It sounds like your batteries are just fine, but something is interrupting the voltage from getting to the output port. Usually that would be a fusible link, which is nothing more than a large fuse. It might not be obvious but check the red positive wire very carefully for either a lump under the wire that could be an in-line fuse, or maybe it lands somewhere on another circuit board and goes through a fuse type component or some type of circuit breaker before it gets to the output where you are trying to measure the voltage and only getting 5 V.
Thank you again for your reply and attention! I owe you please provide me with a PayPal account so that I can thank you! I short the rst-gnd and nothing changed but checked some voltage may help you solve the problem.
B+B- 59.5v
B+ and banana- 5.4V
B- and banana + 59.5v
Banana + and banana - 5.4v
It seems banana - line is problematic. My banana plug and cables glued with a white thick glue and I can’t see any fuse there grossly, but didn’t open it yet scared of breaking some piece/board.
Looks like you narrowed it down to the ground wire from the battery to the banana post as being the problem. So there are one of two possibilities. Either there is some fuse that is blown, and the fuse could look like a piece of wire if it’s a fusible link. It might not be what you are expecting to see like a thin piece of wire inside of a glass tube. Sometimes fusible links are just a certain thickness of wire.
The other possibility is that there is some electronic switch that breaks the connection from the negative output in a case where the battery isn’t installed or something like that. It could be some type of safety or protection feature. Since I don’t have my battery open I can’t see the circuitry there.
Don’t be afraid to peel away the white goo. It’s just there for vibration protection so the wires won’t break out of the board while you’re riding it. You can always replace it with a hotmelt glue gun, that’s all it is.
You could also take a short piece of wire and bridge the connection from B minus to the negative output post and then see if you can measure the voltage there. But if there is a safety circuit engaged keeping the voltage from appearing at the negative post that still wouldn’t solve the problem. Keep looking, you will find where the connection is broken by following that wire very carefully.
Just got 14 of these at auction from sams club. 10 don’t do anything if you plug the charger in. Tested the batteries some doubles are only at 1.3v others are 3.1 . Doing the forced jump wish me luck will update when done.
You could probably start a business if you get some of those running! Good luck, read through some more of the comments in this thread and you will see what other people did that worked.
Still awaiting the update!
It appears that fortvalor did not survive this battery revival experiment... we honor his valiant attempt and unfortunately his ultimate sacrifice in the name of science... rest easy brother
After I removed the battery I noticed there's a small black plastic part, about 1/2" wide and 4" long. Make sure it's out of the way and fits in the groove completely. Otherwise the battery will not make proper connection with the main board and the pro will not turn on
Having this problem now, I ended up jumping the battery. A green light came on and the Segway booted up and was throwing an error code. Left it for the day and the Segway would not boot up again, so I jumped the battery again. I have 58v coming from b+b- inside the battery and 28v from the female banana adapter. There is no light on the battery, only when plugging it in via the charging port it flashes red 4 times. When battery is put back on the Segway the interface will not turn on. I’ve pushed the s1 and grounded the reset pin. Any ideas?
You didn’t say how long it’s been sitting unused so I’m not sure of the battery state. You could check the condition of the battery by leaving it directly connected to the charger as shown in the video for at least five hours. Due to the output voltage of the charger being regulated at a safe value, it would not be a problem to leave it on even overnight or longer.
I would test the actual condition of the battery by placing a slight load on it. It could be the battery isn’t really holding a charge or some number of cells are bad. if possible, try to get your meter probes onto each of the battery contacts and make a note of the voltage at each battery and look for some weak sisters. But you need to do that while the battery has a load on it like from being turned on. In my garage I would take four, 12 V car headlights and put them in series and put them across the battery and make it do some work.
Regarding the 28 V, that’s exactly half of the battery voltage but I’m not sure of the electrical circuit at that point. That might be normal or it might not. There could be a fuse or some other circuit on the battery output that may have blown such that the batteries themselves are OK but power is not making it to the output connector. That would require a further investigation of the printed circuit board but I don’t have a schematic for it.
Hey I have the same blinking light when plugged to the charger. Altough my circuit board is green and looks really different to yours (european model I supose?) and there seems to be no switches on the board... So any tips on that? Thaks
I’m not familiar with any other Segway circuit boards, but one thing you could look for is a place for the switch on the circuitboard but they didn’t actually populate that part. However the two little conductive pads for S1 might be there. If you find it you could take a piece of wire and short out those two pads momentarily. You might also carefully look around for a reset button or switch or two pads that are close to each other that are labeled reset or RST, and do the same thing.
Did you try charging up the battery using the method I showed? That might also help.
I did find the RST labeled but other than that even the labels seem to differ. I've been trying to charge it directly to the female banana plugs with bare wires but it just blinks red as it would from the actual charging. I'll open it up once more to see If there are any s1 labels. My phone actually finds the bluetooth connection momenteraly as the whole thing is charging wich tells me there is some Life in it
Its a 3mm hex key not a 5mm hex key and you can forego all pf this by leaving the pack intact and charging through the output that resets the battery and it pulls it out of hibernation mode
Good to know, thank you for contributing. Sometimes you don’t discover things until you get deep into it. And initially I was expecting to find some bad batteries in the pack, but in any case this thread has added a lot to the base of knowledge and has helped people get their dead Segways going again. Cheers!
Do NOT avoid the temptation, PUSH THAT BUTTON, I bought my ninebot (cheap) "dead on arrival", when I pushed the button everything came back to life. It seems that this button resets the power management board, don't avoid it.
My philosophy is 'first do no harm'. If all else failed I'd push it. But when I don't know what I'm doing I do it very carefully and don't just start pushing buttons. Having said that, thanks for letting us know that it worked for you. It may help other people. I added your comments to the video at the part when I pointed out the switch.
Do you suggest pushing S1 or reset?
@@Nadeaux4 wheres the reset one?
My board does not have any reset button like you show.
Any other suggestions please?
S1
Thank you.
Today I had the problem, that my charger did not charge the battery, because it was drained too low. I just removed the batterie and connected the charger as you did, but without removing the batterie cover. I just used the 2 bigger sockets that are exposed to the outside. Just waited a few minutes until the red blinking LED on the batterie turned to green, then plugged in the charger normaly and was able to fully charge it. I think opening the batterie only makes sense, if what I described does not work any more. Than you can give the S1 button a try.
That’s a good solution, and would probably work for most people. Since it has regenerative braking it doesn’t have a diode in the output of the battery connector so there is every reason to believe that should work.
@@robertmorgan2145 Yes, it does work. I did it today. I have to mention, that I still had about 56V on my batterie. So a lot more than those in the video. My Mini Pro could also be put on and the app showed about 5% of batterie status. The only problem was, that the charger did not start charging. Charger LED always stayed green. After having pin 1 and 2 of the charger been connected to the 2 big sockets on the batterie for about 5 minutes, the charger accepted the batterie at the charging port and I was able to charge it normally.
This actually worked to bring both of my Mini Pros back to life. It wasn't hard at all. I charged both of my batteries but it still didn't work. UNTIL I pushed the reset button. After I did that the green light started flashing and then went to solid green. I re-installed the battery pack and it now works perfectly. Video is a little long winded in his explanation but the information worked perfectly.
Yeah, when I made the video, I was expecting to do a complete battery pack teardown. I wasn’t expecting to find a single reset switch. But anyway glad it worked out.
@@rjmorgansd so you can literally just press it? What about the lil black button that says RESET
@@kevenramos7871 the little black button that says reset is the one that we are all talking about here. There doesn’t seem to be any harm in pressing it, and it seems to reset the battery controller to allow a drained battery to charge.
This is probably a dumb question, but how do you press the button. I see it looks like a small pin prick sized hole. Do you just stick a needle or something in there?
The battery connector if you are looking at the pack with thw connector away from you the positive is on the right neg on the left the two big ports
Thanks for the video. My Segway has been down for 2 years. I cracked the battery open as instructed ( used a hammer and screwdriver to gently tap all the way around) I pressed that BUTTON and the green light started flashing. I put the battery back in and it says it full charged and its working now. Thanks again.
That’s great to hear! I’m trying to find a way to update the video and tell people to go ahead and push that button because it does indeed seem to solve the problem. I was just hesitant at the time I made the video because I wasn’t sure what it would do. I figured with my luck it would erase the motherboard or something.
Did you push the S1 or Reset?
Does it still run? And was it that little s1 button? About to try it today!
I pushed it and it just flashed red…
@@SmileyReviewsmine just blinked red.
7:05 - The "SWM" pin is probably "square wave modulation"... similar to PWM (pulse-width modulation). It's just a signaling mechanism. The other 3 are of course power, ground, and reset... so the 4th pin is the communication pin.
It could be. I didn’t take the time to put my scope on it which would probably give the answer.
Typically the reference designator S, or SW refers to a switch. But since that is a test header it’s a little bit unclear what SWM stands for.
So I put my Segway into storage around 2020 and the battery drained. I tried charging now in 2023 and the board is dead completely. I just opened up the battery and pressed the S1 button but nothing happened for me? Any suggestions to bring it back to life? thank you
If you watch my entire video I show you how to hook up the charge leads from the charger directly to the battery terminals. That bypasses any charge circuitry that might be between the charge jack and the battery pack itself. If the battery pack is anywhere above maybe 40 V or so it should come back to life.
Good to know. Is there a way to hook up a spare battery to extend your ride distance on these, or do I need to take a spare battery and hex wrench and swap them out? I'm only getting like 5 miles off road distance with knobby tires.
Sounds like that battery is down to less than 50% capacity. I would either use it for shorter trips or if you really have fun on the Segway just get a new battery.
Hi! I have done this and it worked perfectly. But after a day, I tried to charge it again. It said it was charging, but when u took it off it was beeping all the time and showing the same 10% battery percentage. Tried it again, same thing. Does any one of you know what could be wrong? I really don’t want to spend 300€ on a battery replacement. Thank you.
That sounds like some sort of internal electronics failure possibly in the charge circuit. That is rare. Maybe try charging the battery manually a couple of times yourself and see if it goes away.
@@robertmorgan2145 hi! Thank you so much for replying. What do you mean by charging manually? Right now when I charge it, it looks like it’s charging (bars going up and down), but the light on the charger is still green. How would I charge it manually? Thanks again!
I manually charged the battery but the S1 return it to life
Another battery saved! Good deal.
just tried this and got the battery to charge but the unit still wouldnt turn on, no green light tried mounting it a few times. going to try that switch!
Let us know if it works after pushing the button!
@@rjmorgansd I'm working on two of them. The one I charged last night is at home. I'm at work now and charged the other and pressed the button. Green LED is on! I'll press the switch on the other one when I get home. This video was incredibly helpful!
@@tomcatpilot15 glad to hear it! I think you’re going to be in luck. As long as the battery didn’t reach a critically low level to where the battery cells reversed themselves, pressing that S1 button seems to reset the battery controller and get things working again.
@@rjmorgansd the batteries were at 42v when I tested them before charging
@@tomcatpilot15 you should be able to recover that pack just fine. 42 V is a good voltage. If it was down around the 20s or 30s I would be concerned about it.
can i run a secondary battery in parallel for my ninbot gokart pro?
That’s beyond the scope of this discussion. However in general yes you can parallel lithium ion batteries, however it requires them to be very closely matched in charge level and capacity. I assume you are talking about charging the batteries individually in the normal fashion, and then connecting them together in parallel to give greater capacity. Something like that could work.
@@robertmorgan2145 sorry for asking on this video but you seem like u know alot of how these things work,if i buy a spare s max battery would u help me figure out a way to do it?
I bought one same problem dead batteries but be careful about jumping you could seriously overheat a short circuit you're bored I pulled the battery pack out and charged with a charger designed for RC cars and lithium on batteries I charge them in packs of 7.2 so when I put them back in at work just fine it took me about 3 days to charge everything but now it works great so be careful about just shorting and jumping batteries that way thanks for allowing me to comment and a good day to all
okay so thank you so much it is freaking worked!!!! I had this problem 2 years ago and never saw this video and threw away 5,700mah battery.
but now because of you I have another 5700 mAh battery and it didn't work...but now it does!!!! so thank you so very much for your amazing video if I could shake your hand I would
Hey that’s great to hear! You made my day. I kind of made that video just on a whim because when I opened up the Segway I didn’t know what to expect. But I had a good idea I could find the problem. It seems to be helping a lot of people and I’m really glad to hear that you are back in business now.
One word of caution, be careful on that Segway. The other day I ran into a raised portion of a sidewalk and instead of just bumping up a little bit like every other time, the thing threw me up and backwards into the air and I landed on my back and hip on the sidewalk. Ended up in the emergency room. I’ve got hundreds of miles on this thing and that’s the first time anything like that has happened. And it was instant. Ride carefully!
Thank you so much for this video !!! You are a great instructor! I followed all the steps and it brought my Segway back to life. It did not initially work because I believe the battery became too hot . So if it doesn't fire up right away, I recommend you let it cool down for a couple hours before you try to power it up again.
So glad to hear that! I like stories with happy endings. Enjoy it once again and be sure to put it on charge at least every couple of months when you aren’t using it.
Got the ninebot for 30 bucks bought charger amazon 30 bucks, no charge,
then took battery off to jump + - terminals.... nothing
then opened battery casing as show in this video, pressed S1 button
HEY PRESTO!!! green light flashing tested terminal 60v
connected charger green flashing light turn red.
Thanks for the information i am a happy camper ;)
Great news! Merry Christmas.
You are brilliant !!! Thank you❤
You’re welcome, hopefully it helped get your ride going again.