lithium battery and charger ebike help please

tequilagrae Part of things Posts: 94	lithium battery and charger ebike help please tequilagrae @tequilagrae
	Sept 2, 2021 9:43:40 GMT Select Post Deselect Post Link to Post Back to Top
	I have bought an Amazon side mount ebike kit and a 24v (25.2v) li ion battery with charger. I plugged in the charger and it showed the green light for fully charged after about 5 mins. But when I put it on the bike it only shows 2 of the 3 charge lights on the bike. It then drops to the last red light after a few seconds and only runs the bike for about 30 metres. Even when left on charge overnight. How do I tell if the battery or charger is at fault? Also the charger that came with the battery says 25.2v 2a output. Looking at other chargers should it not be more like 29v to charge it?


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dodgerover Posted hell of a lot "These days turned out nothing like I had planned" Posts: 5,877	lithium battery and charger ebike help please dodgerover @dodgerover
	Sept 3, 2021 12:30:16 GMT Select Post Deselect Post Link to Post Back to Top
	I would say that the battery is stuffed, isn't it all under guarantee from Amazon anyway? They'll just refund and tell you to order another Does the battery have a separate balance lead? If so did you connect it to the charger?
	Last Edit: Sept 3, 2021 12:33:06 GMT by dodgerover Mk2 lwb transit work van retrorides.proboards.com/thread/159214/new-work-1985-transit-update Dodge 50 (247CUi) powered Range Rover (resting), WANTED Aussie Valiant

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tequilagrae Part of things Posts: 94	lithium battery and charger ebike help please tequilagrae @tequilagrae
	Sept 3, 2021 14:51:14 GMT Select Post Deselect Post Link to Post Back to Top
	Thank you. It doesn't have a separate balance lead. There is a 2 wire power lead and a round plug for charging. There seems to be a BMS inside the shrink wrap. Multimeter arrives soon so maybe that will shed some light. I will see what voltage I get out of it. It has the Amazon guarantee but it took 3 months to arrive so don't want to have to wait again if I can help it.


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