What is your opinion on the build quality of these batteries? I have one and so do 2 of my friends now but there's been a government recall on them here in the UK. I'm reluctant to give up my battery because it has worked flawlessly. Charges to 54.7v every time and provides me plenty of power for a reasonable amount of time on my ebike which is meant to be 2kw (I doubt it is) I have the 20ah version 48v Also is this battery capable of charging via the power output plug? I had some issues when running regen. Blew the same MOSFET twice until I bypassed the PCB on the live leg of the fet with some enamalled wire.
Its crazy that standards are not there for different charging connectors for different voltages and much much clearer labeling on battery and charger saying what they are . Its crazy easy in a household of 5 ebikes to mix them up . Anyway had 5 of these batteries ., the oldest nearly 5 years old but i am gentle with them and they have proved to be great value for me with over 30000 miles collectively on them .. There is a recall now as linked to fires in UK . I am not disposing of mine but i will charge and store in a fire safe place .
If your 36v batteries have a 20A BMS for example then you can remove them and set your current limit (p14 on the sw900 display) to 40A and put a fuse in between the positive and the controller. Only charge with the correct voltage charger and monitor during charging, once it reaches 1 or 2 volts away from full take it off. Monitor heat of pack when charging/discharging to make sure you’re not overcharging or overdischadging. Also don’t discharge the pack below 62 volts
No mention of how the cells had a high spread of voltages. They are usually very close together for a good battery, even if it has been draining slowly.
The breaks are terrible but works like moped breaks, if it does not work at all, the fluid has leaked, if it works but poorelly you might need brake pads. They are very cheap but different front and back: s.click.aliexpress.com/e/_DDhmfF9
Why should the charger be damage because of bugs? There are many devices that have ventilation holes and i don't get any bugs in those devices that breaks it.
It's more important if you charge in non temperature controlled room like a shed, garage etc. Bugs are always drawn to heat when its cold outside and a nice warm charger are perfect for spiders and other bugs to build nests in. If you only charge indoors when the tempature is around 20C then it is usually not a problem. We have dismateled many chargers and inverters to find out what was wrong and many times it's bugs.
These batteries have an expiration date, you buy a UPP battery because they're half the price knowing they are going to last half the time, the only question is what do you do with it when its dead.
@@MaNNeRz91 I have two of them, the one with 1600 miles is perfect, my other one completely died around 2800 miles, it was also perfect till about 2500 miles and then degraded quickly.
@@bassw1758 I'll keep you updated if it fails on me any time soon. For the price I really can't complain too much. Sits in the frame nicely and charges at 1v an hour so I can pretty precisely time my charging 😂 as sad as that is.. I managed a 40 mile ride on it a while ago. Averaging at 17mph. And the bike does 40mph on full beans.
Trying not to throw shade but the title says "troubleshooting" the only thing you did was take it apart. I have the same pack and have taken it apart only to find nothing glaringly obvious
What a strange comment, bugs laying eggs in electrical equipment, in any case you shouldn't be repairing battery packs at home with the danger of fire.
just have a clay flowerpot with lid next to your repair station, the lid must have holes for the fumes to exit, and having some thick sand just in case, this thing saved me 3 times
What is your opinion on the build quality of these batteries?
I have one and so do 2 of my friends now but there's been a government recall on them here in the UK.
I'm reluctant to give up my battery because it has worked flawlessly. Charges to 54.7v every time and provides me plenty of power for a reasonable amount of time on my ebike which is meant to be 2kw (I doubt it is)
I have the 20ah version 48v
Also is this battery capable of charging via the power output plug? I had some issues when running regen. Blew the same MOSFET twice until I bypassed the PCB on the live leg of the fet with some enamalled wire.
Its crazy that standards are not there for different charging connectors for different voltages and much much clearer labeling on battery and charger saying what they are . Its crazy easy in a household of 5 ebikes to mix them up . Anyway had 5 of these batteries ., the oldest nearly 5 years old but i am gentle with them and they have proved to be great value for me with over 30000 miles collectively on them .. There is a recall now as linked to fires in UK . I am not disposing of mine but i will charge and store in a fire safe place .
Could two 36 v ebike batteries be connected in series for 72 v ? Would something need to be done with the two BMS ?
You would need a bms with chips that are rated for 84v, since the second bms in series would be seeing that much voltage
If your 36v batteries have a 20A BMS for example then you can remove them and set your current limit (p14 on the sw900 display) to 40A and put a fuse in between the positive and the controller. Only charge with the correct voltage charger and monitor during charging, once it reaches 1 or 2 volts away from full take it off. Monitor heat of pack when charging/discharging to make sure you’re not overcharging or overdischadging. Also don’t discharge the pack below 62 volts
No mention of how the cells had a high spread of voltages. They are usually very close together for a good battery, even if it has been draining slowly.
I have the same battery do u know what wire I need for the switch please
where can I purchase one of those battery tester units please.
Do you know how to fix if the back brake doesnt work on the fatscooter? It has DOT4, so its not that. I have looked but cannot find the problem.
The breaks are terrible but works like moped breaks, if it does not work at all, the fluid has leaked, if it works but poorelly you might need brake pads. They are very cheap but different front and back: s.click.aliexpress.com/e/_DDhmfF9
Why should the charger be damage because of bugs? There are many devices that have ventilation holes and i don't get any bugs in those devices that breaks it.
It's more important if you charge in non temperature controlled room like a shed, garage etc. Bugs are always drawn to heat when its cold outside and a nice warm charger are perfect for spiders and other bugs to build nests in. If you only charge indoors when the tempature is around 20C then it is usually not a problem. We have dismateled many chargers and inverters to find out what was wrong and many times it's bugs.
These batteries have an expiration date, you buy a UPP battery because they're half the price knowing they are going to last half the time, the only question is what do you do with it when its dead.
Done over 700 miles on mine so far and it hasn't shown any sign of declining yet 🤞🏻
@@MaNNeRz91 I have two of them, the one with 1600 miles is perfect, my other one completely died around 2800 miles, it was also perfect till about 2500 miles and then degraded quickly.
@@bassw1758 I mean that's less than 50pence a mile isn't it? I can live with those numbers 😂
@@MaNNeRz91 yes but I've heard of better batteries getting well over 5,000 MILES
@@bassw1758 I'll keep you updated if it fails on me any time soon. For the price I really can't complain too much. Sits in the frame nicely and charges at 1v an hour so I can pretty precisely time my charging 😂 as sad as that is..
I managed a 40 mile ride on it a while ago. Averaging at 17mph. And the bike does 40mph on full beans.
i like your aproach, are you available for consultation
Trying not to throw shade but the title says "troubleshooting" the only thing you did was take it apart. I have the same pack and have taken it apart only to find nothing glaringly obvious
I wouldn't buy those Batteries. Louise Rossmans caught fire.
Primer like😊
Garbage shady company, don't buy!
What a strange comment, bugs laying eggs in electrical equipment, in any case you shouldn't be repairing battery packs at home with the danger of fire.
just have a clay flowerpot with lid next to your repair station, the lid must have holes for the fumes to exit, and having some thick sand just in case, this thing saved me 3 times
Not worthy.