Quote:
Originally Posted by rpmerf
13V before you started it or while it was running? A few minutes isn't really enough for an alternator to charge a battery.
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13v while it was running.
So today I went out and purchased a new booster/jump pack. Hooked that up (as my wife is out I couldn't use her car to jump my truck) and after a while started the truck. The amp meter showed 13v while running. I revved it a few times (I can't drive it at the moment as it's got no interior) and left it running for around 30 minutes. I went inside to do some errands came out and tried to start it up and it's completely dead. Hooked up the amp meter and its showing as 8v - this is around 20 minutes later.
I don't know what could be causing the battery to drain that quickly.