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Re: code P0A80 Replace HV Battery, our approach, not scientific!
Posted to Technical Tips Forum on 4/24/2012

Charge battery to 7.5V using my system, then with the same bulb, discharge battery. Record time and voltages for three minutes. Voltage variation must be almost linear, if voltages drop abnormally, then battery is bad. See chart [2005 Toyota Prius, BATT/Charg... Login to read more.

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