I recently bought a used 48V 20AH LiFePo4 battery for my eBike. The seller said it had been used lightly for a couple of months and is practically new (which I know is probably not true).
At full charge, the battery level indicator says 3 out of 5 battery level, but stays that way for the first 8 miles or so (I'm supposed to get 18-20 miles on a full charge).
I'm afraid to try to ride the ebike and drain the battery (to see if I actually get the full 18-20 miles) because I don't want to be stranded half way to my destination and have to pedal a 90 pound bike another 10 miles.
I know the issue is not the battery level indicator, because it worked fine with my SLA batteries.
Did I get a dud? Is it not charging all of the way? Any help or feedback would be great.