Snayke62
1 µW
Hello folks. I been reading and reading on this topic here and there is tons of info. I'm not new to fundamentals of electricity by any means, but I'm just smart enough to be dangerous. I have a currie E-zip 400 I got for free and it was missing the batteries. It has the xk-022a controller - 30amp 24vdc. 400w motor . Old brush type I guess. I already took an old battery out of a hoverboard. It's 36vdc and 4AH. I rigged up part of the the hoverboards circuit board to plug the charger and battery into. So the battery is being charged separately from the bike. It worked pretty well but I found that if the boy keeps on the throttle it will shut off. Long story short I found out that it wasn't the battery being totally dead and the controller stopping it for undervoltsge or over current, it was the actual BMS in the battery pack. Dropped to 20v under heavy load and stopped output. So I started to play around. I made a 60 volt battery with 2 hoverboard batteries. That a big NO. I had a od razer junk controller around and tests it out on that. You can guess what happened. Cap blew. Motor started running wide open. Anyways. I researched better and have made a battery cluster- F$#? Out of 4 snap on cordless tool batteries. And also connected to the lithium ion 36v 4ah hoverboard battery. Part numbers of HB battery is jetech JT-BC200-09. 36v 4 ah 244wh. Thesnap on batteries are part numbers CTB8172. Okay I'll try to explain this as best I can. There are 4 cells in each snap on batt. 2 sets of cells in series 7.42 v each. The tools connect the 2 series cells together again in series when the battery is plugged in. So pretty much I have 8 7.42vdc batteries to connect. I parallel the 2 sets of 7.42 volts in each battery together. And then connected in series to a second one. So now I have 2 banks of batteries that are about 16 volts and 4 ah each. (I hope) I connected them in series. Now I have 1 big battery that is 32 VDC and 8 ah. Is this right? My main question is I'm not quite sure that the c rating is or how to tell for sure if this will be enough juice to do any good or if it's just gonna go dead. I need a little help with the math and ohm's law. I also have that other 36v battery from hover board I can connect to the one I made in parallel. That would keep it at around 36volts or so. The hoverboard battery charges to 40 volts with it's charger. Is it safe to use that charger with this new cluster of batteries? I haven't blown one up yet. Don't really wanna. Ohhh. Yeah I know. I'm a tight ass. 5hsts why I don't just buy new batteries. I know the controller wi take the 40 volts. I took it apart to look at the cap voltage but is filled with glue shit and you can't get in it. Lemme know what you smart fellers think. Thanks.