i have done it before by using my ebike batteries and my milwaukee m18 12.0ah power tool batteries. I run a icharger 458 duo which has an dc input limit of 49volts. So this works great for 36 volt (10S) ebike batteries. I also got a few milwaukee m18 12.0ah batteries that can power my icharger and get me a day through a day of racing. a good and common ebike battey would be a 36v(10s) 20amp hour battery.