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Model specific boards => Golf mk3 => Topic started by: Jasikasisback on 03 July 2013, 21:44

Title: Battery charging-when to turn off the charger..
Post by: Jasikasisback on 03 July 2013, 21:44

I recently replaced my failing car battery with a Varta and this holds charge very well. 12.6v even after the car sitting for a couple of days.

I also have an extra spare battery and was reading on the internet that these should be charged to 13.5v or even 14v? before being put into storage.

The battery I have has a green "charged" indicator. Currently it is black (indicating that it should be charged) and the voltage with a voltmeter is 12.77v...

Is it safe to charge this thing until the green indicator shows up or should I just shut it off? One of the pages said that the battery got to 13.44v before the light turned green..

Just wondering as I want to throw one in the boot when I make a long trip.

Title: Re: Battery charging-when to turn off the charger..
Post by: gazareth on 03 July 2013, 21:50

just stick it on a slow charge and keep an eye on it. keep flames well away from it though whilst charging as flammable gas is given off.

Title: Re: Battery charging-when to turn off the charger..
Post by: Jasikasisback on 03 July 2013, 22:24

at what voltage should I stop charging it?

Title: Re: Battery charging-when to turn off the charger..
Post by: gazareth on 03 July 2013, 23:31

you really need to check it with a discharge tester. stick it back on your car and then call out the aa in the morning when it doesn't start. they will then test it for you lol. you wont even have to leave your house.

Title: Re: Battery charging-when to turn off the charger..
Post by: Len on 04 July 2013, 13:25

Its not really volts that count its amps really or amp/hours

Dont get hung up on numbers.