Many thanks for a fantastic how to on repairing the Sherpa 50. Shame on Goal Zero for not making their products a little more friendly were upgrades and repairs are concerned.
It is actually quite friendly to repairs - mind you, they could have permanently bricked the battery management IC once the battery went bad. If they had gone with a TI bqxxxx BMS this repair would have been 10 times more complicated, involving fiddling with I2c and requiring the pack protection code to unbrick the BMS. What they should have done is to have the battery on a connector and sell the battery as a replacement part.
Just wanted to say thank you for your video on rebuilding the Sherpa 50. I followed your steps and it worked. I have one comment for those that are going to try to rebuild your own device, If you have not practiced hand soldering please do so before you tear your device apart, secondly the tolerances are pretty tight when putting your device back together so make sure you have aligned your batteries tightly so that the battery pack will fit back into your device and you can close the unit back together. Overall the tutorial was great and you saved me a lot of money. R/ James Bailey
Best video I've ever used. I followed the directions carefully and my unit is back running better than new. The most difficult part is getting the batteries back into the case. Solder carefully and align the batteries carefully - it's a tight fit!
Just did this upgrade using this video and my newfound skills with a small spotwelder for the strips. Battery form before placing in the case was critical and the tolerance isn't very much. But, once done the Sherpa 50 bounced back to life and lives to charge and recharge again. Many thanks for the video - it was better set out than a couple web sites. The sweet smell of success.
One quirk i found out when fixing these: The voltage rating for the charging input is wrong as stated on the case (15-25v) - the display will start blinking and the current be cut off when the voltage is above 20ish volts. Maybe they meant to say "nominal voltage" of a connected solar panel, but you can't use a 24v power brick for charging. Thanks for the video, was very helpful.
Thank you so much for making this video. I have an old Sherpa 50 that seems to be still working but am concerned about it's life cycle. Am happy to see that I can use it and my solar panel for some time to come without spending a few extra hundred dollars on a new one and creating far more waste than I have to.
I bought a used sherpa 50 with nomad 13 solar at 25 bucks. The battery did the same when i plugged in. Thats why i got it so cheap. Well i let it sit with the charger when i reached home and in a few hours it showed 40 percent and the battery blinking light went away. It has been working normally now. :)
Thank you so much. I've been planning to fix mine since even though I switched to ecoflow I still love my OG goal zero packs. Followed step by step and got it up and running again. Great explanation!
Good work, thanks for sharing this video. Such a beautiful item HAS to be repaired, it is a shame that good zero wouldn´t replace the batteries. Greetings from Germany!
This video is very helpfull for me...i can upgrade my sherpa 50 from factory default capacity 15600mah to high-drain battery capacity 19000mah by myself...thank you so much for the video sir!!...really appreciate!!...best regard from Indonesia 🙋♂️🇵🇱
@@stannickel882 i get the battery from local online market in my country, i think there is a lot of high-drain battery 18650 type in amazon or ebay to refill or replace the battery on sherpa 50, hope you will find the battery...regards
Excellent demonstration. I will rescue and upgrade mine. My original batteries still do charge but do not remain charged very long. Goal Zero are not very customer friendly. I experienced exactly the same response regarding service. I have never used it. Only tested an LED light a couple of times. Anyway thank you again. KC0CTY
Thanks so much for this. I just emailed goal zero about a replacement battery before I found this. I guess I know the response. Can't wait to upgrade mine.
Thank you so much for this awesome video. Would love to rescue my Sherpa 50. Are there any alternative options to try to jump start the batteries as I don't have a second Sherpa 50, but I have a solar panel and or the goal zero inverter.
Awesome video. I got one of these used to go with my Katabatic tent which the solar panel fits, and had to buy used. My unit works but nice to know there's an option to repair. Might upgrade the cells if these test to be near end of life. One question, my research shows the chemestry is a bit different on the cells you reference. If the voltages and other specs are the same, will it matter if the chemestry type is different in the new 18650 cells compared with the originals?
Thank you for the video, but I don't think that I have the equipment to do this with mine. Mine has the same LCD signs coming up. Moving to Northern Haiti in several weeks to work with an NGO for their communications and media, so lots of battery power needed. Loved this little power pack, but not sure if I can rent or buy/sell a solder thing.
Thank you for this video I was able to repair one of my two Sherpa 50 units. I replaced the batteries on the second unit just like the first but it does not charge above 80%. Why could this be?
how much would you charge to upgrade if i mailed you my sherpa 50. helpful video and goal zero why not fix them or help out your customers out... suppose to be a green company
good afternoon to all the chat, in fact, a very popular topic. I join in the gratitude to the author of this video. I did everything that was indicated in this video, but now the entry ring is blinking that the charge is coming, but the battery itself is not blinking that it is receiving it, can I somehow restart the device? what could be the problem ?😮😮
What kind of solder should I use on these lithium batteries? I saw another video about soldering these batteries together, and they used Boa Solder, Rosin Core Solder that was 60% Tin, 40% Lead. Thanks for the excellent video.
Nice work, they are good little units made better by this mod! I have a query/question for you. My sherpa 100 is great works fine, charges etc but when I add the AC/inverter on the side and turn it on I get the blinking battery error the same one as in this video come up and both the 12v and laptop lights flash, when I turn it off it is fine. The AC unit is brand new and in theory should be fine. Have you ever come across this error? Thanks.
My friend, love your informative and expert video. Could you offer some advice on how to use the chaining cable outlet to hook up to an outboard battery? We all know there is no need to have 2 expensive Sherpa units to chain. Just one Sherpa unit and a simple extra lithium battery would be great. There is no need to replicate the expense of another unit with a charge controller and all of the outlets. Could you lay out the directions of how to do that correctly?
I looked at a 30 cell 3s10p pack for the same option. The issue I had was locating a chain cable I considered gutting a invertor unit for the nib and run it through that
Everyone is asking you if you will repair and upgrade them, will you? I would be happy to pay you. It's a great unit, and it runs the light I bought with it, I don't want the new units, the small ones don't run the light.
Thanks for the great video. I have a Guide Plus 10 charger that doesn't charge. I'm wondering if you have a repair for it or any ideas on how to troubleshoot it. thanks
Can the link/sidecar port be used for a larger 18650 bank @11.1v? I noticed you chained two Sherpa 50’s together. The sidecar port is in essence connecting two cell packs together out the original front panel? Sweet upgrade BTW.
Thanks so much for this video! I followed your instructions and the unit has power - built-in flashlight works, power button and USB light works - but I hit a hiccup: USB and power light stay lit when you shut off the unit using the power button. The battery condition display does shut off but the only way to disable all lights is to pull the fuse. Also, when on, the battery condition display is back-lit, but blank - so no way to figure out what its charge level is or if there is a potential error condition...any suggestions on how I might troubleshoot this? I feel like it might be something simple but I'm not super technical.
Just a few questions that I hope you have a chance to answer. 1, will you spec the battery you used? I know the size and capacity, but not sure of protected or unprotected (also not sure of what that means). 2, will you give a little more info on the nickel strip you are using such as the width and thickness and where you procure it? 3, are higher capacity than what you’ve used cells worth using? 4, soldering is definitely cheaper than buying a welder. Are there any special precautions when soldering? Thanks for your time answering these questions. I have 2 Sherpa 50’s and recently, they’ve both stopped working due to the bad battery icon and would like to refurb them.
Hello i was wondering if you had an idea if it would be possible to use the daisy chain connector on the Sherpa 50 to connect it to a regular 12 volt lead acid battery to act as a booster.
its a great thing to revive electronics in general, altought i wouldnt weld or solder the new cells, i rather would buy some 18650 cell holders and put them on the case so i can easy replace them in the future (also would give the advantage to recharge them externally) but in general if something has a bad battery and you can open it: replace the battery instead of throwing it away
Or better yet get cells with solder tabs welded onto them. The 99 Cents Only Store had one cell power banks for $1.99 and I've been getting them and taking the cells out to use for repairs.
You hit the nail on the head! You get what you pay for. Most of the cheap cells (like the "Ultra Fire" 18650s) are absolute crap. They say their capacity is 5000mAh, or even 8000mAh, but that is a 100% lie. I tested some and found they are only 500-600mAh - JUNK. If you want quality stick with a name brand like Panasonic and expect to pay a little more. Buy once, cry once.
yeah the ultra fire cells are the worst ones its a shame that you cant fit cell holders in there, i like the abillity to use the cells in other equipment as well if needed so you can swap the cells around whereever you need them
I am a Scoutmaster and have one of these that I bought that is dead. Is there anyway I can send mine to you and pay you to repair it? I am leaving for Medical School, and would like to get it fixed to use, while I am there.
Good video, thanks! Mine is still operable but I expect problems in a year or so, so good to know what to get ready for. BTW - is there any source of the "Goal Zero" connectors other than their official representatives, charging you for single plug insane amount of money? What standard is that (if any)? I'm talking about all of them actually (both input, and 12V/laptop output).
may be related, may be not, but i've got a sherpa 50 which has been showing the check fuse icon on the LCD, but there doesn't seem to be any issue with the fuse itself. power comes through the unit if i plug in input power, but will not charge the battery (only pass-through). all other functions work output-wise including the LED light and USB port. i don't get a bad battery icon, just the check fuse icon. in your experience, have you seen the fuse holder go bad on these units?
No, I've never found a bad one. Your description matches EXACTLY what I described in the video. Either your Sherpa has developed a bad cell or it drained one or more cells below 3.2v, so the protection circuitry will not allow a charge. Sorry, man.
thanks, i do notice a slight bulge on the case (top) so i suspect a cell or two may have called it quits. it's well out of warranty now and i get heavy usage on it (used daily) so it's probably time for some new cells. great video, very helpful. going to see if may be the fuse holder (or connections to it) have failed, if they look good, i may give the battery swap a go.
Sure, here it is: www.ebay.com/itm/Hand-held-Battery-Spot-Welder-Welding-Machine-for-18650-Battery-Pack/112196654519?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2057872.m2749.l2649
Great video, internals clearly show how overpriced it is... I should give You thumb down because right now i'm searching for spot welder any my girl won't be happy about that purchase... //ofcourse it thumb up;)
But another small issue’s been appeared, Mine doesn’t seem to charge over 80%, not to FULL level on the LED display. HOW IS YOURS??? Mine using 3500mah 18650 by LGchem.
Read this guy's repair experience. You might need to replace another cell, or the fuse: iswtc.wordpress.com/2017/11/25/repairing-goal-zero-sherpa-50-battery/
I did the same replacement. When I pressed the power button, the 20% charge display showed up for about 1 min then turn into the "Battery Failure". I removed and reinserted the fuse and it stays the same. I made sure that batteries are wired correctly. I even could measure the voltage between every battery pairs are 4.17v, 8.2v, and 12.3v. What could be wrong?
Many thanks for a fantastic how to on repairing the Sherpa 50. Shame on Goal Zero for not making their products a little more friendly were upgrades and repairs are concerned.
It is actually quite friendly to repairs - mind you, they could have permanently bricked the battery management IC once the battery went bad. If they had gone with a TI bqxxxx BMS this repair would have been 10 times more complicated, involving fiddling with I2c and requiring the pack protection code to unbrick the BMS. What they should have done is to have the battery on a connector and sell the battery as a replacement part.
Just wanted to say thank you for your video on rebuilding the Sherpa 50. I followed your steps and it worked. I have one comment for those that are going to try to rebuild your own device, If you have not practiced hand soldering please do so before you tear your device apart, secondly the tolerances are pretty tight when putting your device back together so make sure you have aligned your batteries tightly so that the battery pack will fit back into your device and you can close the unit back together.
Overall the tutorial was great and you saved me a lot of money.
R/
James Bailey
Best video I've ever used. I followed the directions carefully and my unit is back running better than new. The most difficult part is getting the batteries back into the case. Solder carefully and align the batteries carefully - it's a tight fit!
Just did this upgrade using this video and my newfound skills with a small spotwelder for the strips. Battery form before placing in the case was critical and the tolerance isn't very much. But, once done the Sherpa 50 bounced back to life and lives to charge and recharge again. Many thanks for the video - it was better set out than a couple web sites. The sweet smell of success.
One quirk i found out when fixing these: The voltage rating for the charging input is wrong as stated on the case (15-25v) - the display will start blinking and the current be cut off when the voltage is above 20ish volts. Maybe they meant to say "nominal voltage" of a connected solar panel, but you can't use a 24v power brick for charging. Thanks for the video, was very helpful.
Thank you so much for making this video. I have an old Sherpa 50 that seems to be still working but am concerned about it's life cycle. Am happy to see that I can use it and my solar panel for some time to come without spending a few extra hundred dollars on a new one and creating far more waste than I have to.
Excellent. Love the donate to BSA.
I bought a used sherpa 50 with nomad 13 solar at 25 bucks. The battery did the same when i plugged in. Thats why i got it so cheap. Well i let it sit with the charger when i reached home and in a few hours it showed 40 percent and the battery blinking light went away. It has been working normally now. :)
Thank you so much. I've been planning to fix mine since even though I switched to ecoflow I still love my OG goal zero packs. Followed step by step and got it up and running again. Great explanation!
Good work, thanks for sharing this video.
Such a beautiful item HAS to be repaired, it is a shame that good zero wouldn´t replace the batteries.
Greetings from Germany!
Sorry ..did u find a way to fix it in Germany ?? As mine stoped working
@@amjadtravels
I have the new Sherpa 100 and it is working properly. I did not own the 50, so I don’t have to repair it.
Greeting from Germany.
Do you offer this as a service I was thinking about paying you to upgrade mine.
This video is very helpfull for me...i can upgrade my sherpa 50 from factory default capacity 15600mah to high-drain battery capacity 19000mah by myself...thank you so much for the video sir!!...really appreciate!!...best regard from Indonesia 🙋♂️🇵🇱
What battery did you use and where did you get them? TIA
@@stannickel882 i get the battery from local online market in my country, i think there is a lot of high-drain battery 18650 type in amazon or ebay to refill or replace the battery on sherpa 50, hope you will find the battery...regards
Glad to hear that you donate them to the Boy Scouts. I recently started a new troop and working on using goal zero to light things up in the evenings.
Excellent demonstration. I will rescue and upgrade mine. My original batteries still do charge but do not remain charged very long. Goal Zero are not very customer friendly. I experienced exactly the same response regarding service. I have never used it. Only tested an LED light a couple of times. Anyway thank you again.
KC0CTY
Thanks so much for this. I just emailed goal zero about a replacement battery before I found this. I guess I know the response. Can't wait to upgrade mine.
Thanks for this great tutorial and insights on the goal zero and problems with it.
Cheers from Norway
Brilliant. Thanks very much for this - your explanation and instructions are first rate. I'm going to do this now just for the fun of it!
Great unit Great vid. My sherpa has reached its cycle limit. 2021 is there a another replacement battery to consider or still using the 18650b?
Thank you so much for this awesome video. Would love to rescue my Sherpa 50. Are there any alternative options to try to jump start the batteries as I don't have a second Sherpa 50, but I have a solar panel and or the goal zero inverter.
Great video, if you can I would love to see the same thing with a Sherpa 100
Awesome video. I got one of these used to go with my Katabatic tent which the solar panel fits, and had to buy used. My unit works but nice to know there's an option to repair. Might upgrade the cells if these test to be near end of life. One question, my research shows the chemestry is a bit different on the cells you reference. If the voltages and other specs are the same, will it matter if the chemestry type is different in the new 18650 cells compared with the originals?
Great video. Would be even better if could make a way to do hot swappable battery setup using power pole connections.
Sweet upgrade! Well done!
Thank you Bill. Merry Christmas to you and all yours 😁
Great video! How much would you charge if I send you my sherpa 50 to upgrade?
Thank you for the video, but I don't think that I have the equipment to do this with mine. Mine has the same LCD signs coming up. Moving to Northern Haiti in several weeks to work with an NGO for their communications and media, so lots of battery power needed. Loved this little power pack, but not sure if I can rent or buy/sell a solder thing.
Great Video! Where would I find the nickel strips?
Danke für dass super Video danke schön
Thank you for this video I was able to repair one of my two Sherpa 50 units. I replaced the batteries on the second unit just like the first but it does not charge above 80%. Why could this be?
how much would you charge to upgrade if i mailed you my sherpa 50. helpful video and goal zero why not fix them or help out your customers out... suppose to be a green company
good afternoon to all the chat, in fact, a very popular topic. I join in the gratitude to the author of this video. I did everything that was indicated in this video, but now the entry ring is blinking that the charge is coming, but the battery itself is not blinking that it is receiving it, can I somehow restart the device? what could be the problem ?😮😮
What kind of solder should I use on these lithium batteries? I saw another video about soldering these batteries together, and they used Boa Solder, Rosin Core Solder that was 60% Tin, 40% Lead. Thanks for the excellent video.
I found this video, very informative. Would you be willing to upgrade my Sherpa 50 at my expense? Thanks in advance, Clint
Nice work, they are good little units made better by this mod! I have a query/question for you. My sherpa 100 is great works fine, charges etc but when I add the AC/inverter on the side and turn it on I get the blinking battery error the same one as in this video come up and both the 12v and laptop lights flash, when I turn it off it is fine. The AC unit is brand new and in theory should be fine. Have you ever come across this error? Thanks.
My friend, love your informative and expert video. Could you offer some advice on how to use the chaining cable outlet to hook up to an outboard battery? We all know there is no need to have 2 expensive Sherpa units to chain. Just one Sherpa unit and a simple extra lithium battery would be great. There is no need to replicate the expense of another unit with a charge controller and all of the outlets. Could you lay out the directions of how to do that correctly?
I looked at a 30 cell 3s10p pack for the same option. The issue I had was locating a chain cable I considered gutting a invertor unit for the nib and run it through that
What would you charge me to prepare me a set of batteries for my shepherd 50
Hello that thermister do you have to info on that and how ro check if the thermister is good or bad?
@AerialWerks i can't seem to find this chaining cable anywhere. i would build my own if i knew what this plug is called can you help?
Everyone is asking you if you will repair and upgrade them, will you? I would be happy to pay you. It's a great unit, and it runs the light I bought with it, I don't want the new units, the small ones don't run the light.
Thanks for the great video. I have a Guide Plus 10 charger that doesn't charge. I'm wondering if you have a repair for it or any ideas on how to troubleshoot it.
thanks
Can the link/sidecar port be used for a larger 18650 bank @11.1v? I noticed you chained two Sherpa 50’s together. The sidecar port is in essence connecting two cell packs together out the original front panel? Sweet upgrade BTW.
Hola amigo exelente video usted puede cambiar las baterias de un cherpa 100 ac
Thanks so much for this video! I followed your instructions and the unit has power - built-in flashlight works, power button and USB light works - but I hit a hiccup: USB and power light stay lit when you shut off the unit using the power button. The battery condition display does shut off but the only way to disable all lights is to pull the fuse. Also, when on, the battery condition display is back-lit, but blank - so no way to figure out what its charge level is or if there is a potential error condition...any suggestions on how I might troubleshoot this? I feel like it might be something simple but I'm not super technical.
What is the biggest battery I can put in my Sherpa 50? how much would you charge me to upgrade mine?
Also interested in finding this out, if anyone knows the answer.
@@silverros I'm interested as well. But I dont see any responses in reference to him doing them. I'd be happy to pay for the service.
Just a few questions that I hope you have a chance to answer.
1, will you spec the battery you used? I know the size and capacity, but not sure of protected or unprotected (also not sure of what that means).
2, will you give a little more info on the nickel strip you are using such as the width and thickness and where you procure it?
3, are higher capacity than what you’ve used cells worth using?
4, soldering is definitely cheaper than buying a welder. Are there any special precautions when soldering?
Thanks for your time answering these questions. I have 2 Sherpa 50’s and recently, they’ve both stopped working due to the bad battery icon and would like to refurb them.
The NCR18650B he used are unprotected which makes sense since the main PCB of the Sherpa provides protection.
Hello i was wondering if you had an idea if it would be possible to use the daisy chain connector on the Sherpa 50 to connect it to a regular 12 volt lead acid battery to act as a booster.
Could the Sherpa 50 be upgraded with Qi charge like the newer ones? Prefer the older design units.
Have you also done a yeti 150 upgrade?
Sir, I asked this question under your Sherpa 100 vid but it is better suited here: As of 2020 is there another battery that you would suggest?
Thanks,
What if no display even on charging? No power at all ....does get warm when charging it but no lights at all. No led ... nothing shown ..thanks
its a great thing to revive electronics in general, altought i wouldnt weld or solder the new cells, i rather would buy some 18650 cell holders and put them on the case so i can easy replace them in the future (also would give the advantage to recharge them externally)
but in general if something has a bad battery and you can open it: replace the battery instead of throwing it away
Or better yet get cells with solder tabs welded onto them. The 99 Cents Only Store had one cell power banks for $1.99 and I've been getting them and taking the cells out to use for repairs.
to be honest, i dont trust these cheapo cells, they are probably some recycled or even fake cells (it must have a reason why they are so cheap there)
I'm with you, but the clearance inside the Sherpa case was only 1/16" on each side so the carriers won't fit.
You hit the nail on the head! You get what you pay for. Most of the cheap cells (like the "Ultra Fire" 18650s) are absolute crap. They say their capacity is 5000mAh, or even 8000mAh, but that is a 100% lie. I tested some and found they are only 500-600mAh - JUNK. If you want quality stick with a name brand like Panasonic and expect to pay a little more. Buy once, cry once.
yeah the ultra fire cells are the worst ones
its a shame that you cant fit cell holders in there, i like the abillity to use the cells in other equipment as well if needed so you can swap the cells around whereever you need them
How different inside are older Sherpas? I subscribe to your other channel, BTW. Found this one by accident.
I am a Scoutmaster and have one of these that I bought that is dead. Is there anyway I can send mine to you and pay you to repair it? I am leaving for Medical School, and would like to get it fixed to use, while I am there.
Hi. How can I mail my unit to you so you can repair and donate? Thanks.
Hi, do you still take Sherpa 50 to assemble for donation? I have one and bought new batteries but too complicated for me to assemble.
I appreciate the offer but these are long obsolete and I stopped rebuilding them a few years ago. It was very kind of you to make the offer tho!
I am posting successful repair story to include with the others below and have to thank ArialWerks for a good baseline to work with. 1 down, 1 to go.
Good video, thanks! Mine is still operable but I expect problems in a year or so, so good to know what to get ready for. BTW - is there any source of the "Goal Zero" connectors other than their official representatives, charging you for single plug insane amount of money? What standard is that (if any)? I'm talking about all of them actually (both input, and 12V/laptop output).
I looked around too but the plugs appear to be proprietary and only available from GZ.
@@bosnianbill Incredible, there is no Chinese company that makes a copy ;-). But indeed, I cannot find one.
thanks man!!!!
Can we change it for lifepo4 cells maybe with different protection?
wow thats easy...... and BandH has a sale for these at $80!
I can't find any chaining cable do you how make one?
may be related, may be not, but i've got a sherpa 50 which has been showing the check fuse icon on the LCD, but there doesn't seem to be any issue with the fuse itself. power comes through the unit if i plug in input power, but will not charge the battery (only pass-through). all other functions work output-wise including the LED light and USB port.
i don't get a bad battery icon, just the check fuse icon. in your experience, have you seen the fuse holder go bad on these units?
No, I've never found a bad one. Your description matches EXACTLY what I described in the video. Either your Sherpa has developed a bad cell or it drained one or more cells below 3.2v, so the protection circuitry will not allow a charge. Sorry, man.
thanks, i do notice a slight bulge on the case (top) so i suspect a cell or two may have called it quits. it's well out of warranty now and i get heavy usage on it (used daily) so it's probably time for some new cells. great video, very helpful. going to see if may be the fuse holder (or connections to it) have failed, if they look good, i may give the battery swap a go.
Cuando lo vas a subtitular?
Would you rebuild a Sherpa 50 for me?
I got fuse problem can u help I have replace them but still the same
I cant turn off my yety 50 and i dont why happend that
Can I send you my dead Sherpa 50 for repair? Curt Pollock, Anchorage, AK
Anyone have a link to that chaining cable?
Can you give us some information about the spot welder you used?
Sure, here it is: www.ebay.com/itm/Hand-held-Battery-Spot-Welder-Welding-Machine-for-18650-Battery-Pack/112196654519?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2057872.m2749.l2649
An $84 spot welder really works? I've got an expensive Unitek commercial model that I've never got to work very well!
I'd like to send you my sherpa50 and the inverter side car to be retooled and donated. can you send me the PObox? thanks
Great video, internals clearly show how overpriced it is...
I should give You thumb down because right now i'm searching for spot welder any my girl won't be happy about that purchase...
//ofcourse it thumb up;)
I’ve done my Sherpa50’s battery replacement works exactly same with yours. but mine blinks OVERHEAT mark when it powers on. please help me T・・T
Problem solved, I changed the thermistor to a new one, now this little guy charging and discharging perfectly :)
But another small issue’s been appeared, Mine doesn’t seem to charge over 80%, not to FULL level on the LED display. HOW IS YOURS??? Mine using 3500mah 18650 by LGchem.
Read this guy's repair experience. You might need to replace another cell, or the fuse: iswtc.wordpress.com/2017/11/25/repairing-goal-zero-sherpa-50-battery/
@@ssammucheetar I'm having the same issue. What type of thermistor did you use?
I would pay you to do this to mine, not that I could not do it myself but I don't have any of the tools you mentioned. Send me a message?
No thanks.
6×3.7×3400маh=20400mah
I did the same replacement. When I pressed the power button, the 20% charge display showed up for about 1 min then turn into the "Battery Failure".
I removed and reinserted the fuse and it stays the same. I made sure that batteries are wired correctly. I even could measure the voltage between every
battery pairs are 4.17v, 8.2v, and 12.3v. What could be wrong?