AO Platinum Member
Join Date: Aug 2003
Location: London, England
Re: Blimmin problems on 147, HELP!!......
Yep, 11.9v is beyond flat, completely sh4gged.
And when you think that a good battery will actually recover some voltage when left on its own it just shows how flat it is.
The alternator on my Fiat Cinq failed last week, completely dead, no lights, nothing. Everything stopped in the dark on the side of the M11. After 1hour it had recovered enough voltage to be able to start the engine again.
The 13.9v at least shows that the alternator is trying to charge it, so that is ok.
But 100% you need a new battery.