Hello All,
I am a total n00b so please bear with me. I have bought a Megawheels S1 electric scooter second hand. The charging socket was lose and broke after a few weeks. I replaced it and it worked for a while then it stopped taking any charge. I took out the battery and it appears to be a 7S1P LiFePo4 pack, with 25.2V nominal voltage. Interestingly the provided charger is 29.4V which begs the question: is it possible that I overcharged the battery? I pried open the battery pack and there is a BMS inside (see closeup on the right hand side photo) with RE2700000482 on it. The voltage of the seven cells, measured on the connectors of the BMS vary between 2.7V and 3.1V.
When I connect the charger, the status LED on the charger used to switch to red. It doesn't do that anymore. If I connect the same charger to a flat battery of an ebike then the status LED does change to red and it charges the battery as it should. I do not suppose the charger is faulty. I also experimented with another (29.4V/3A) to na avail: it charges the bicycle battery and does not charge this one.
Please advise. Do I need to replace the BMS? Or the battery pack?
I am a total n00b so please bear with me. I have bought a Megawheels S1 electric scooter second hand. The charging socket was lose and broke after a few weeks. I replaced it and it worked for a while then it stopped taking any charge. I took out the battery and it appears to be a 7S1P LiFePo4 pack, with 25.2V nominal voltage. Interestingly the provided charger is 29.4V which begs the question: is it possible that I overcharged the battery? I pried open the battery pack and there is a BMS inside (see closeup on the right hand side photo) with RE2700000482 on it. The voltage of the seven cells, measured on the connectors of the BMS vary between 2.7V and 3.1V.
When I connect the charger, the status LED on the charger used to switch to red. It doesn't do that anymore. If I connect the same charger to a flat battery of an ebike then the status LED does change to red and it charges the battery as it should. I do not suppose the charger is faulty. I also experimented with another (29.4V/3A) to na avail: it charges the bicycle battery and does not charge this one.
Please advise. Do I need to replace the BMS? Or the battery pack?