Thank you so much! Exactly what i was looking for. i have a rad battery, a 48v-12v converter and an off-grid cabin to power. Now I just need the banana connectors and the wire! and something to hold them in place. Brilliant!
I'm camping right now and have a massive Ebike battery that I wish we could use for the camper power. The Bluetti is almost dead due to no sun. My Ebike battery is full and I have no way to use it. It's an 84v 35AH. I need to figure this out and use it in the future.
Very informative! Thank you. Love the printed connecter! I'm researching also using my rad battery as additional storage in my motorhome to run some electronics. My thinking is to keep it charged as backup battery - using my solar bank. Then with a 48v-12v converter use it to power my Ecoflow River Pro when its level gets low - the River pro can accept up to 8A from a 12V source as input.
Fantastic presentation, thanks for trying things different ways and showing what is happening with the meters. You got me thinking the bike battery could be used to power a small PA system where there isn’t power around.
Im thinking of doing the same thing thanks for the video i think instead of making a connector though i would order an empty battery box thats the same as my battery they come with a connector you mount on a bike i think that would be easy aliexpress has them cheap.
I want to use my Rad battery to power lights at my off-grid cabin. I have the 48-12v converter but don't have the ability to make the connector to my Rad battery so I'm wondering about your comment about the "empty battery box"....were you able to get one? I'm interested.
Hi very cool video, this is something I wanted to try for a long time, dose your battery have a bms? And if so will it be cut off automatically when it reaches a low voltage? Also if the bms really protects from low voltage, can you use a step up and step down converter? You are one cool dude thanks for the video.
I am building a similar unit using a 15Ah 36V e-bike battery and a 36V aliexpress inverter. I am going to charge the battery from 12V using a solar panel and dc/dc boost converter 12 to 42V and just have to figure out how to limit the charge current to 1-2A to not blow the boost converter
What software did you use to create your 3d STL file? Wonder if you could put two batteries in parallel to increate wH? Should be able to go to a larger inverter? Thanks.
If your bms is rated for 30 amps out you should be able to charge more than 2 amps in... I imagine 5 amps would still be safe . Just monitor the heat to be sure . As far as the old battery goes ... some batteries and some chargers have propriety connections . They ensure that you are using it for their product and no one else's . Or it might be requiring a voltage range (39v - 53v) before turning on ? Good luck . (I'm also experimenting with my ebike batteries .)
Did you get any sparks when connecting the battery to the inverter? I’ve been researching this same setup for a few days and I’ve seen videos recommending to pre-charge the capacitors before connecting the battery to the inverter. Is that something that you do?
I have a weird question: Is it possible to hook up a solar charge controller's output to an inverter and then a battery on the input? I have a 48v inverter & 40v ryobi batteries, solar controllers seem to be cheaper and easier to find than 50-60A boost controllers.
Interesting question. The ryobi 40V battery can provide enough juice to run their 300W pure sine wave inverter (usually less than 10A). So you would have to combine quite a few of them to get to 50-60A. You would also need blocking diodes in case the voltages are different. You would need a hefty solar charger. I just went with a 36V inverter ua-cam.com/video/p4xW9f1ohlw/v-deo.html
I was wondering if you ever solved the difference between the 2 batteries one which you could access power and the one you could not. That is the one I have.
@@SerendipitySue Do you sell your Rad Battery Connect Adapter or offer it on some website? I know you offer your build for printing the item , I don't wish to attempt that now.
@@SerendipitySue Any chance there is a high value resistor on the bike across those other contacts used to prevent discharge unless the battery is connected properly? Maybe the old batteries didn't have a very good BMS, so this was just another safe guard to prevent short-circuiting whereas the newer batteries have a better BMS?
Radpower bikes do not sell extra battery base mounts. I reached out to them and they told me, they can only sell me one if my mount is broken. I want to put dual batteries on my bike. Can this work this work for that?
I designed and 3D printed some: www.printables.com/model/69891-rad-power-radcity-ebike-battery-holder-for-rack-or www.printables.com/model/71609-rad-power-battery-and-bike-connectors www.printables.com/model/70263-rad-power-ebike-battery-adapter
you have to be careful running two batteries in parallel. They have to have the same charge level. You can NOT use blocking diodes because of the regenerative braking
Hi Chris: Nice job. I really like your channel. I will bet that whoever sold you the eBike swapped out the original battery for a "clone" battery. Then they sell the original batteries as spares and can charge more for them.
Nice! My eBike arrived today (after waiting 6 weeks). I've been learning a lot from your channel. Thanks for sharing :) Is there a weight difference between the batteries when they are fully charged?
Great idea.. I have a Quattro 5k on my rig at 48 volts with 300ah of EG4 batteries. Hmm maybe I could just print this connector and let the Victron charge the Rad batteries..
would probably work. Just check all the Victron parameters to make sure it has the lithium battery parameters correct. Also hope you have the RAD battery version that works!
@@SerendipitySue I would just be charging the Rad batteries in parallel with the EG4's. The charge voltages are the same as they too are Lithium ion cells. Top end of the EG4's is 56.8 volt also
@@patzbit9562 Be *very* careful that the battery voltages are the same... otherwise you will have an arc-welder as the current runs quickly from the higher to lower voltage batteries
Yes sir great information I'm guessing you have a electronic back ground , ? I see no glowing melting or smoking wires on any test ? I can't even change my vape battery's with out occasional catastrophic component failure , question 52v 30Ah escooter Panasonic 1600w max out put lithium battery nearly new 100 hour of controlled prudent usage. Integrated into a van build that running a 1500 3000watt surge, power drive inverter A high out put Toyota alternator 14.7 volts under normal load . The lithium battery is very similar to yours without the key switch only 2 wires charging with charge port and 2 wires out put 53.3v is the max charge its has obtained 39ish is as low as its discharged . Do I need a special inverter to handle the 52 v input for a 110 ac out put , only running 20 bulb led lights strip charging lap top, phone ,350 watt rice steamer/ slow cooker 1 hour per day charging Milwaukie 20v drill batteries 2 hours per month I was charging the emove cruiser escooter with this system running directly off the starter 12 volt lead acid battery and as long as I am running charges as well as 110 shore power auto shut down at 12.1 volts inverter after 20-30 minutes of engine off no problems I'm looking for this system to run my led's all night when I fall asleep reading wake up with phone and lap top charged full I typically drive around 100 or more miles per day 2-3 hours or more, so I would like to avoid solar panels complication, no shore power option for my life style. Retired army, my dog and I just travel from beach to desert to mountains exploring mild climate hiking trails . Used book stores, libraries, dog parks, wilderness national forest, Colorado River kayaking the slow water, trout fishing, fruit and vegetable farmers markets, 0 politics media A gas mini bike logging roads, low traffic scenic routs, less than lethal protection options, clean abandon homeless camps if it can be done safe in a couple hours, sorry T.M.I. I get a bit hyper vigilant and over anylize when I'm sleepy, it runs in the Army family Men, after years of service. I'm going to figure this out I would really like to avoid any destroyed components in the process , Any and all legitimate input would be much appreciated from the this UA-cam video producer and or the other viewers. Thank you fellow earthlings for all the great experienced educators taking the time to fill this platform with so much high quality information presented for the less experienced for all the future generations that are able to skip Chilton books, college expenses plus time ,impatient family members with low teaching skills , unscrupulous professionals, Natural strength and weaknesses barriers, All the other pitfalls that can be avoided by having great experienced educators with good video making abilities God Bless all of you that donate your valuable time to this educational platform .
You need an inverter that would take the 39-54VDC range. I use this 1000W one ( amzn.to/3WIBXGB ). I would just find a DC-DC converter ( amzn.to/3BZbX1P ) that would take 39-52V and convert to 13.8VDC. Then you could just run your 12V appliances
@@SerendipitySue awesome that's exactly what I needed to know and before I could find the information by becoming a expert , I really didn't want to take that much time , Thank you so much
@@SerendipitySue holy electricity under 150$ wow that is well in my budget I would have went over kill rather than taking time to educate myself , I've tried and am very mechanical minded but when it comes to electrical my mind is practically useless I can think of multiple time glowing wires . 220 one time no wire anywhere no burn marks , just a flash pop and then all wires were gone . It's kinda funny looking back but kind of scary at the event horizon. Thanks again .
Sir this means alot to me and the people of my country please keep on posting about this. Thanks
Thank you so much! Exactly what i was looking for. i have a rad battery, a 48v-12v converter and an off-grid cabin to power. Now I just need the banana connectors and the wire! and something to hold them in place. Brilliant!
I'm camping right now and have a massive Ebike battery that I wish we could use for the camper power. The Bluetti is almost dead due to no sun. My Ebike battery is full and I have no way to use it. It's an 84v 35AH. I need to figure this out and use it in the future.
That's great, I was just thinking of buying a discounted RadCity 4 and wondered about doing this. Thank you very much for sharing the STL files!
You are a genius every time I watch something from you I am always amazed thank you for sharing
Awesome video! I enjoyed every minute of it. Did you ever get around to finding out why the other battery could not power the inverter?
Definitely going to do this. Thanks for the research and knowledge sharing!
Let me know if your model battery works
Very informative! Thank you. Love the printed connecter! I'm researching also using my rad battery as additional storage in my motorhome to run some electronics. My thinking is to keep it charged as backup battery - using my solar bank. Then with a 48v-12v converter use it to power my Ecoflow River Pro when its level gets low - the River pro can accept up to 8A from a 12V source as input.
I tried to eliminate the conversion losses by using the matched AC inverter
Fantastic presentation, thanks for trying things different ways and showing what is happening with the meters. You got me thinking the bike battery could be used to power a small PA system where there isn’t power around.
I agree, this would be a useful setup.
Im thinking of doing the same thing thanks for the video i think instead of making a connector though i would order an empty battery box thats the same as my battery they come with a connector you mount on a bike i think that would be easy aliexpress has them cheap.
I want to use my Rad battery to power lights at my off-grid cabin. I have the 48-12v converter but don't have the ability to make the connector to my Rad battery so I'm wondering about your comment about the "empty battery box"....were you able to get one? I'm interested.
Thank you for making this video!
This is great! Thanks, I had this very same thought experiment just the other day! haha
Hi very cool video, this is something I wanted to try for a long time, dose your battery have a bms? And if so will it be cut off automatically when it reaches a low voltage? Also if the bms really protects from low voltage, can you use a step up and step down converter? You are one cool dude thanks for the video.
From the info Rad tells people about balancing their batteries once a month, I have to assume there is no BMS in the ebike batteries.
I am building a similar unit using a 15Ah 36V e-bike battery and a 36V aliexpress inverter.
I am going to charge the battery from 12V using a solar panel and dc/dc boost converter 12 to 42V and just have to figure out how to limit the charge current to 1-2A to not blow the boost converter
What software did you use to create your 3d STL file? Wonder if you could put two batteries in parallel to increate wH? Should be able to go to a larger inverter? Thanks.
I used Geomagic DesignX. You could put batteries in parallel, but they would have to have the same charge level or you would have big problem.
Great content, thank you for sharing!
If your bms is rated for 30 amps out you should be able to charge more than 2 amps in... I imagine 5 amps would still be safe . Just monitor the heat to be sure .
As far as the old battery goes ... some batteries and some chargers have propriety connections .
They ensure that you are using it for their product and no one else's .
Or it might be requiring a voltage range (39v - 53v) before turning on ?
Good luck . (I'm also experimenting with my ebike batteries .)
And how is the test
Fan! I was just think of us y bike battery like this. Thank you for the great video.
Did you get any sparks when connecting the battery to the inverter? I’ve been researching this same setup for a few days and I’ve seen videos recommending to pre-charge the capacitors before connecting the battery to the inverter. Is that something that you do?
I hook up wires before turning the battery on. Haven't had a problem
Will this work on my 52V 20ah downtube battery or my 36V 13.5ah?
I have a weird question: Is it possible to hook up a solar charge controller's output to an inverter and then a battery on the input? I have a 48v inverter & 40v ryobi batteries, solar controllers seem to be cheaper and easier to find than 50-60A boost controllers.
Interesting question. The ryobi 40V battery can provide enough juice to run their 300W pure sine wave inverter (usually less than 10A). So you would have to combine quite a few of them to get to 50-60A. You would also need blocking diodes in case the voltages are different. You would need a hefty solar charger. I just went with a 36V inverter ua-cam.com/video/p4xW9f1ohlw/v-deo.html
You selling any of those connectors ?
no, I put the free 3D Printer files in the description. There are Internet services that will print them for you
I was wondering if you ever solved the difference between the 2 batteries one which you could access power and the one you could not. That is the one I have.
no :-(
@@SerendipitySue Do you sell your Rad Battery Connect Adapter or offer it on some website? I know you offer your build for printing the item , I don't wish to attempt that now.
@@kenny6391 no sorry, but there are internet companies that will print 3D models for you
@@SerendipitySue Any chance there is a high value resistor on the bike across those other contacts used to prevent discharge unless the battery is connected properly? Maybe the old batteries didn't have a very good BMS, so this was just another safe guard to prevent short-circuiting whereas the newer batteries have a better BMS?
Great video
Not possible or advisable to draw power from charge port?
that's what i wanted to know too...why use the dc to dc?
Radpower bikes do not sell extra battery base mounts. I reached out to them and they told me, they can only sell me one if my mount is broken. I want to put dual batteries on my bike. Can this work this work for that?
I designed and 3D printed some: www.printables.com/model/69891-rad-power-radcity-ebike-battery-holder-for-rack-or www.printables.com/model/71609-rad-power-battery-and-bike-connectors www.printables.com/model/70263-rad-power-ebike-battery-adapter
you have to be careful running two batteries in parallel. They have to have the same charge level. You can NOT use blocking diodes because of the regenerative braking
Thank you
Did they both work doing DC to DC?
both batteries drive the rad ebike correctly
Hi Chris: Nice job. I really like your channel. I will bet that whoever sold you the eBike swapped out the original battery for a "clone" battery. Then they sell the original batteries as spares and can charge more for them.
bought both direct from RAD Power. Both batteries work fine for eBike riding.
Nice! My eBike arrived today (after waiting 6 weeks). I've been learning a lot from your channel. Thanks for sharing :) Is there a weight difference between the batteries when they are fully charged?
I never weighed them. I doubt there is any difference.
@@SerendipitySue Good luck. I always considered Rad Power to be a reputable company
Great idea.. I have a Quattro 5k on my rig at 48 volts with 300ah of EG4 batteries. Hmm maybe I could just print this connector and let the Victron charge the Rad batteries..
would probably work. Just check all the Victron parameters to make sure it has the lithium battery parameters correct. Also hope you have the RAD battery version that works!
@@SerendipitySue I would just be charging the Rad batteries in parallel with the EG4's. The charge voltages are the same as they too are Lithium ion cells. Top end of the EG4's is 56.8 volt also
@@patzbit9562 Just don't want to charge them at more than 4A... not sure if BMS will shut down things or not if you exceed
@@patzbit9562 Be *very* careful that the battery voltages are the same... otherwise you will have an arc-welder as the current runs quickly from the higher to lower voltage batteries
@@SerendipitySue right.. have a resistor i use to bring up the lower battery
Yes sir great information I'm guessing you have a electronic back ground , ?
I see no glowing melting or smoking wires on any test ?
I can't even change my vape battery's with out occasional catastrophic component failure ,
question 52v 30Ah escooter Panasonic 1600w max out put lithium battery nearly new 100 hour of controlled prudent usage.
Integrated into a van build that running a 1500 3000watt surge,
power drive inverter
A high out put Toyota alternator 14.7 volts under normal load .
The lithium battery is very similar to yours without the key switch only 2 wires charging with charge port and 2 wires out put 53.3v is the max charge its has obtained
39ish is as low as its discharged .
Do I need a special inverter to handle the 52 v input for a 110 ac out put ,
only running 20 bulb led lights strip charging lap top, phone ,350 watt rice steamer/ slow cooker 1 hour per day
charging Milwaukie 20v drill batteries 2 hours per month
I was charging the emove cruiser escooter with this system running directly off the starter 12 volt lead acid battery
and as long as I am running charges as well as 110 shore power auto shut down at 12.1 volts inverter after 20-30 minutes of engine off no problems
I'm looking for this system to run my led's all night when I fall asleep reading wake up with phone and lap top charged full
I typically drive around 100 or more miles per day 2-3 hours or more,
so I would like to avoid solar panels complication,
no shore power option for my life style.
Retired army,
my dog and I just travel from beach to desert to mountains exploring mild climate hiking trails .
Used book stores, libraries, dog parks, wilderness national forest, Colorado River kayaking the slow water, trout fishing, fruit and vegetable farmers markets,
0 politics media
A gas mini bike logging roads,
low traffic scenic routs,
less than lethal protection options,
clean abandon homeless camps if it can be done safe in a couple hours,
sorry T.M.I. I get a bit hyper vigilant and over anylize when I'm sleepy, it runs in the Army family Men,
after years of service.
I'm going to figure this out I would really like to avoid any destroyed components in the process ,
Any and all legitimate input would be much appreciated from the this UA-cam video producer and or the other viewers.
Thank you fellow earthlings for all the great experienced educators taking the time to fill this platform with so much high quality information presented for the less experienced for all the future generations that are able to skip Chilton books, college expenses plus time ,impatient family members with low teaching skills , unscrupulous professionals,
Natural strength and weaknesses barriers,
All the other pitfalls that can be avoided by having great experienced educators with good video making abilities God Bless all of you that donate your valuable time to this educational platform .
You need an inverter that would take the 39-54VDC range. I use this 1000W one ( amzn.to/3WIBXGB ). I would just find a DC-DC converter ( amzn.to/3BZbX1P ) that would take 39-52V and convert to 13.8VDC. Then you could just run your 12V appliances
@@SerendipitySue awesome that's exactly what I needed to know and before I could find the information by becoming a expert , I really didn't want to take that much time , Thank you so much
@@SerendipitySue holy electricity under 150$ wow that is well in my budget I would have went over kill rather than taking time to educate myself , I've tried and am very mechanical minded but when it comes to electrical my mind is practically useless I can think of multiple time glowing wires . 220 one time no wire anywhere no burn marks , just a flash pop and then all wires were gone . It's kinda funny looking back but kind of scary at the event horizon. Thanks again .
Trip down the battery pack a remove the bms and replace its with a 300watt bms and you be good
The key to my battery is to move the locking pins, it is purely mechanical.