Quote:
Originally Posted by ducksface
We call that a
Surface charge.
Seems right, numbers are right
But
A slight load and it crashes.
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As Beau388 said, a hydrometer or a load test will tell you the condition of the battery itself. The voltage reading is easily confounded by surface charge. In my schoold days as a part time service station employee the hydrometer test (properly adjusted for temperature) was the definitive test of a battery's electrochemical charge. They're still around; you can pick up a hydrometer for around $15.