Voltage drain when switching on Electronics

ESK8 Electronics
#1

Hi guys,

I’ve just gone to plug all my electronics together ready to fit onto my board and when I turn it on everything lights up and then fades away in a couple of seconds. The voltage also goes up to normal voltage and drops to about 5v in a couple of seconds

Im not sure what the problem could be as it worked when I previously tested it. Nothing smells burnt so not sure what the issue is.

I really appreciate any help. Thanks

#2

Antispark?

1 Like
#3

We need a bit more information about your setup. Vesc, battery, antispark and so on.

2 Likes
#4

I am using a 10s3p pack with 30q batteries and a 10s bestech bms with an led e switch. With a voltmeter, the voltage will go to 36 volts and then drop back down. And the led on the switch fades off.

#5

I am using the eswitch on a Bestech 10s bms

#6

Also, when I plug it into charge the voltmeter goes up 1 percent about every 10 seconds. And it’s only a 2A charger

#7

test the voltage before the BMS when this happens – if the volts before BMS don’t drop – the BMS must be defective. if the volts before BMS still drop, then you must have bad cells.

2 Likes
#8

I have just checked and one of the cells was at 3.0v. I have put it on charge to hopefully balance them, and then the BMS will stay on. Thanks for your help :slight_smile:

1 Like
#9

that would do it! good luck

1 Like
#10

Thank you. I just took it off charge and it stayed on so all fixed :smile:

1 Like
#11

@mmaner @mmaner @mmaner

1 Like
#12