Hi, folks.
I'm helping a mate with his Stilo - jump started earlier today due to flat battery. I'll poke around in threads on here to see if I can answer my own question but I post this in the hope someone can help.
We haven't got going with diagnostics really, and the battery may well be shot, but there was one behaviour I saw today that I want to query.
I had a voltmeter on the battery before, during and after charging. It started as 12.3V, after disconnecting charger it was reading 12.8V, but dropped to 12.5V after a while, so I'm not holding out for the battery lasting. Anyway, the observation was that it started fine, reading 12.3V at idle. I got him to give it revs, read 14.3V (iirc), but... stayed at 14.3V when idling again. I wasn't expecting that.
So - question is... is this expected behaviour of the charging circuitry, or if his battery is goosed and we replace it, what can I do to make sure there's not something going on with alternator/earth that will kill the next one too?
Cheers,
Monkey.
I'm helping a mate with his Stilo - jump started earlier today due to flat battery. I'll poke around in threads on here to see if I can answer my own question but I post this in the hope someone can help.
We haven't got going with diagnostics really, and the battery may well be shot, but there was one behaviour I saw today that I want to query.
I had a voltmeter on the battery before, during and after charging. It started as 12.3V, after disconnecting charger it was reading 12.8V, but dropped to 12.5V after a while, so I'm not holding out for the battery lasting. Anyway, the observation was that it started fine, reading 12.3V at idle. I got him to give it revs, read 14.3V (iirc), but... stayed at 14.3V when idling again. I wasn't expecting that.
So - question is... is this expected behaviour of the charging circuitry, or if his battery is goosed and we replace it, what can I do to make sure there's not something going on with alternator/earth that will kill the next one too?
Cheers,
Monkey.