Clean It Up

UK Window Cleaning Forum => Window Cleaning Forum => Topic started by: combat1 on November 06, 2017, 04:59:05 pm

Title: Backpack wiring question
Post by: combat1 on November 06, 2017, 04:59:05 pm

Ok so I have used the battery from an old backpack to power my sub pump in the back of the van. Works great.
I have mounted the charger socket from the old backpack in the new battery box.
Connected live on socket to red on battery and neg on socket to blue on battery.
Had the charger connected for a good few hours but the red light on charger never went out.
Just wondering if my connections are ok?
It worked fine today showing 12volts.
Thanks guys.

Title: Re: Backpack wiring question
Post by: Spruce on November 06, 2017, 06:08:16 pm

Can you put a multimeter across the battery terminals when your charger is on. It should read over 12v.

Title: Re: Backpack wiring question
Post by: combat1 on November 06, 2017, 06:16:10 pm

Thanks Spruce, top man as usual.
I have a meter and will try it.
Cheers.

Title: Re: Backpack wiring question
Post by: Spruce on November 06, 2017, 06:33:18 pm

Quote from: combat1 on November 06, 2017, 06:16:10 pm

Thanks Spruce, top man as usual.
I have a meter and will try it.
Cheers.

If you put your multimeter across the terminals before you put the charger on then you will see the current battery voltage. Then switch your charger on and you should see higher voltage readings on the multimeter indicating that the battery is receiving a charge.

.

Title: Re: Backpack wiring question
Post by: combat1 on November 06, 2017, 06:41:51 pm

Got it, thanks very much.