BH battery. One green led is always switched on

[Hinciu]

Hello guys.

I don't know if its a problem, but i realized that one of 5 leds on my battery is always switched on.
Battery works ok. charging well too. When button is pushed shows the level. but fifth led does not go out.

Who knows why its happening.
Really appreciate your answers.

 

[J.R.]

Hello guys.

I don't know if its a problem, but i realized that one of 5 leds on my battery is always switched on.
Battery works ok. charging well too. When button is pushed shows the level. but fifth led does not go out.

Who knows why its happening.
Really appreciate your answers.

That's really odd. I have a few of these packs and never had that happen. I've seen there's a reset inside the pack:

I've never looked. I think that pack in the video is an older curved 36 V, pre 2015. I've also read holding the pack's status button in for 10 seconds or so can wake, reset it. I've never had the need.

I wish I could offer some real help. I'd be concerned with that light always on. Hopefully someone else will chime in.

 

[Ebiker01]

Like J.R. had mentioned press the button for 10-12seconds and see what you get. No reason to ts any further since it all works...

 

[Hinciu]

Thank you for answers. Seems I find the problem. It is transistor.

 

[Ebiker01]

you can solder on that pcb ?

 

[Hinciu]

you can solder on that pcb ?

Yes.
Maybe it would be useful. Transistor is 2N7002K.
Was replaced and now works fine