Myonk Posted November 7, 2015 Share Posted November 7, 2015 While riding my generic eyu.co euc I have noticed that the battery indicator will go down while riding, just to go back up again when getting off. After figuring this out I tested it by riding up a steep hill. The indicator went to one light out of four. When dismounting or slowing down on a flat surface the indicator goes back to what the battery is really at. Is this normal? Will causing the indicator to go to zero while working the engine cause a BMS failure? Any help from someone experienced with these generics would help Link to comment Share on other sites More sharing options...
John Eucist Posted November 7, 2015 Share Posted November 7, 2015 5 minutes ago, Myonk said: While riding my generic eyu.co euc I have noticed that the battery indicator will go down while riding, just to go back up again when getting off. After figuring this out I tested it by riding up a steep hill. The indicator went to one light out of four. When dismounting or slowing down on a flat surface the indicator goes back to what the battery is really at. Is this normal? Will causing the indicator to go to zero while working the engine cause a BMS failure? Any help from someone experienced with these generics would help Your battery indicator is basically just a voltmeter. When under load the voltage drops causing your battery indicator to show less charge. It is normal. If voltage drops too much of course you will lose torque or potentially have the motor cut off entirely. This is also "normal" unfortunately. This is another reason why it's good to have more cell packs wired in parallel to reduce the voltage drop effect. For example, a 680 Wh capacity euc has four packs of 16 18650 cells wired in parallel. Link to comment Share on other sites More sharing options...
Myonk Posted November 7, 2015 Author Share Posted November 7, 2015 @John Eucist I guess it makes sense that it's just a voltmeter. I'll be careful to make sure it doesn't drop too far and I did kinda expect this as this thing is so cheap. Is this behavior normal in higher end brands such as nb1 or kingsoft? Link to comment Share on other sites More sharing options...
John Eucist Posted November 7, 2015 Share Posted November 7, 2015 I've edited my last post with some more information that addresses what you're asking. Refresh to see. Your generic probably has one pack and nothing wired in parallel hence the voltage drops are more substantial. Link to comment Share on other sites More sharing options...
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