The specs. on these battery cells & the BMS data is all on there web site or as much as i can give anyone , The main thing is getting the big BMS , The oldest one i sold a guy has been going near every day for the last 2 months with it , the 12 ah compared to another small cell headway bat which i stuffed the bms on(was sure harder doing the BMS signal wires on it) does go further in miles distance but if any thing seems less power able to take the big hills as sometimes cutting out for a rest as they do if a good BMS.Chargers are 3A excellent all so far. I'd not touch another Brushed motor. I used before going cyclone the EZip 450w but put it on the left of bike eventualy got a throdle & controller but by that time she was near stuffed it would get so hot y]d fry an egg on it where the 500w 24v cyclone never get very hot.the 960 36v does though.