Can batteries test "ok", but still be bad?
Let me begin by saying I have no knowledge/skills when it comes to all things mechanical, etc. This saga begins when I was parked for 5 mo season, and used a battery tender on the engine start batter...
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to test a battery remove the vent caps with a battery hydrometer test specific gravity all cells should be in 1.275 range if any cell is more than 25 present off battery is bad if all cells are low battery must be charged up and retested if all cells are good battery has to be load tested hook load tester to pos. and neg. battery post load battery for 10 seconds voltage should not drop below 11 volts and volts should come back to over 12 volts quickly
