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Originally Posted by pteam
What should a battery read 12v when not running and 14v when the car is running/charging?
Also is there a cheap/semi-cheap way to test batteries besides a load tester? What do they use to actually test the volts of a battery?
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You can buy a cheap costing Tester for AC and DC and ohms and continuity etc.... all in one tester at Radio Shack, just have to turn the dial to what you want to test, such as AC or DC etc...
If you want a good one, I use Fluke Digital Tester, but Im in the Electrical Industry so it suits me, but I can test DC with mine as well
Costs--Range from 15.00 to 500.00 pending on your needs.