lineslim Posted April 30, 2019 Share Posted April 30, 2019 Hi, I got a hoverboard for free from a friend because it would not power on or charge at all (no red light on charger). I measured the battery voltage to be 17V (a 36V 10S2P pack with Samsung cells, see pictures). After opening up the battery pack I tried to charge it by connecting the charger directly to the B+ and B- on the BMS (for short periods monitoring the voltage and temperature regularly). When reaching around 32-35V I was able to power on/off the board. Foot sensors seemed to work but it kept displaying a red battery symbol and beeping to signal low battery. Still it would not charge "the normal way" through the charge port. Shorting C- and B- (as I saw in a youtube video) starts the charging but it cuts out as soon as the short is removed. I have also tried to "reset the battery" according to the manual by swiching the board on/of at certain intervals, From what I have learnt this is likely a case of either a dead BMS or bad cells in the pack? Is there any way I could determine which of these it might be without taking all the cells apart? Or is there another way of trying fixing this problem before I go and buy a new battery? Would really appreciate your advice! Link to comment Share on other sites More sharing options...
Ssdadam Posted July 3, 2019 Share Posted July 3, 2019 Before all,I suggest you to ask the manufacturer for professional help. As I know,there are two kinds of hoverboard batteries:24V and 36V.And their voltage will change in the range of 24V-29.5V ,or 36V -42V.You'd better make sure the voltage is right(maximum of the range) while the battery full charging.If you have an ampermeter,try to measure the current(be careful) of the battery with a load.Normally,the output current will be 5A to 10A in different dip angle.If your battery works well,maybe the reason is the boards. Link to comment Share on other sites More sharing options...
Recommended Posts
Archived
This topic is now archived and is closed to further replies.