5 replies to this topic

[MarkNeale]

Rover Mini Cooper Mpi

1998 R reg.

My first mini, had it 2 months. Love it.

Electrical Problem Perhaps.

Hi Guys.

My battery has been going flat overnight consistently. I just bought a new one today and it's in and running fine.

However..

I would love to know what the reading on the internal volt meter usually is on other minis.

Mine seems to be quite high, or it seems so to me, at about 15 volts. It's certainly always higher than the 13 volt double line.

I wonder is overcharging is killing my battery?

I am also wondering if there is an iffy earth somewhere. Does any one know of any common earth fault locations?

Your help is hugely appreciated!

Kind Regards.

Mark

[spaceoctagon]

most cars are about 14 volts.

[jaydee]

My usual readings are 12,6V with engine off and 13/14V when running.
It is normal, dont warry about.

[Goopster]

I'm 99% sure that maximum charging rates are about 14.4 Volts.

What is the Volt gauge reading with the ignition on but engine not running? 12 volts? And then, what about on tickover, and finally at 2000+ RPM? Is the needle actually hitting the 15v mark during any of these scenarios?

I'll leave it for others to confirm, but if it doesn't go above 14.5, I reckon you're totally fine.....

Best Wishes, G

Edited by Goopster, 29 April 2009 - 02:27 PM.

[redhotmini]

dont forget that they are gauges and arent really that accurate, they only give you an indication. which is why a voltmeter/circuit tester should be used to measure voltages as its much more accurate

[MarkNeale]

Thanks Everyone!

I'll certainly check it with a multi meter across the battery terminals at different loads and engine speeds.

I'll keep you informed!

Thanks Again!

Mark