Like the title says, I bought the cheapest 48V 10+ Ah battery for e-bikes that wasn't obviously a scam - more specifically this one: https://www.aliexpress.com/item/Free-customs-duty-48V-13Ah-lithium-ion-bottle-water-kettle-battery-ebike-battery-For-Bafang-BBS02/32680168866.html . I was fully expecting it not to be 13 full Ah - for the price I would have settled for 11-12. As it turns out, the battery arrived in one piece, I hooked it up and everything works fine. What I didn't really notice or think about until now (several weeks later), however, is that the charger, though labeled 54.6V is actually only charging at 52V. Moreover, the battery seems to be set to 52V max - because there is a 5-diode push button battery meter on it, and it lights up fully when the charger stops.
The way I see it, one out of four things here are wrong:
1. The charger is busted/misconfigured somehow - it's really a 54.6V charger but broken/incorrectly set, the battery is fine and will charge to 54.6V
2. The charger is designed as a 52V charger and mislabeled as 54.6V for whatever reason, the battery is fine and will charge to 54.6V
3. The battery is a scam - it's something like a 12s of 4.3V cells and will only do 52V without exploding
4. I have no idea what I'm talking about and some 48V batteries should legitimately only be charged to 52V for some reason
What do you guys think, and is there an easy way to find out apart from fully disassembling the battery and counting the cells? I opened the lid and peered into it, the only easily visible thing was a sticker that said 48V on the inside. Seems very nicely built too, everything very clean inside and well insulated/wrapped. Guess I should also say that whatever scam Zone Green Power are running, if any, is a pretty clever one - because after all, my "48V" motor runs perfectly fine for the first estimated 400 Wh and it seems it may be possible to squeeze 600+ Wh out of the battery if you go real easy on the throttle for the last 100. I'm sure most buyers wouldn't know any better.
The way I see it, one out of four things here are wrong:
1. The charger is busted/misconfigured somehow - it's really a 54.6V charger but broken/incorrectly set, the battery is fine and will charge to 54.6V
2. The charger is designed as a 52V charger and mislabeled as 54.6V for whatever reason, the battery is fine and will charge to 54.6V
3. The battery is a scam - it's something like a 12s of 4.3V cells and will only do 52V without exploding
4. I have no idea what I'm talking about and some 48V batteries should legitimately only be charged to 52V for some reason
What do you guys think, and is there an easy way to find out apart from fully disassembling the battery and counting the cells? I opened the lid and peered into it, the only easily visible thing was a sticker that said 48V on the inside. Seems very nicely built too, everything very clean inside and well insulated/wrapped. Guess I should also say that whatever scam Zone Green Power are running, if any, is a pretty clever one - because after all, my "48V" motor runs perfectly fine for the first estimated 400 Wh and it seems it may be possible to squeeze 600+ Wh out of the battery if you go real easy on the throttle for the last 100. I'm sure most buyers wouldn't know any better.