Steve Mozurkewich wrote:

> I'm thinking of buying a electronic 12v battery reader. I'm just
> wondering where the power went of if the reading is inaccurate.

Buy a cheap digital multimeter instead.  It'll give you the same
information, and it has dozens of other uses too.  If you have a
fuel-injected van you'll probably need one sooner or later anyway for
troubleshooting. :)