I've used an Electrec for the past 3.5 years and 5000 miles. Overall, after many mods and accessories, I'm happy with the bike. What I'm not happy with is that it keeps destroying SLA batteries. I'm on my fourth set and that one is now dying. I always end up with on battery strong and the other very weak. After the first year or so, I bought a Soneil charger thinking that might help (it didn't, in fact it seems to make it worse because it doesn't have a trickle charge to help equalize the cells).
I'm thinking of going lithium. I need to be able to easily detach the batteries for charging at work and home. The Electrec has a nice quick disconnect battery box already.
I can't find any LiFePo battery packs sufficient for a 600W motor that will fit in the Electrec battery box. Anyone have any ideas?
My other option is to just retrofit a Bionx system. Aside from the cost, any thoughts on that?