Originally Posted by
wagoneer
I am new here and the purchase of a disassembled ebike has led me to you. Its a German brand someone had stolen the battery and the owner just had enough. 67 years old and commuting to work I thought a little help would be nice. I have commuting on a bike for 30 odd years, It's a pedal assist, I am looking at Lithium 12 volt blocks x 3 to get to my 36 volt target. perhaps some 10ga wire and soldered terminals.
Adrian, since no one has responded I'll take a shot. The three 12v Li-ion batteries in series will give you the 36 volts you need, so that sounds like a good plan.
A couple of questions:
1. You say the original battery was stolen; do you have any idea what the amp-hour capacity of the original was? If not, what is the make and model of the bike? We may be able to find the battery capacity specs online and size the 12v batteries accordingly.
2. Assuming just the battery was stolen and the battery cables are still with the bike, what gauge wire are the battery cables?
I've had good luck dealing with Batteries Plus at 1450 Bush St (between Van Ness and Polk) purchasing 12 volt Li-ion batteries for use with my portable amateur radio equipment (disclosure: I have no connection with them other than being a satisfied customer).