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Home >> Porsche >> 2021 >> 911 Targa 4 >> Repair and Diagnosis >> External Pages >> Different car >> Section 16 (2X Petrol, Exhaust, Engine-Electric - General 3.0L (Eng Code MDK.Kb) -- 992 - 911 CARRERA (992)) >> WM, 2X00IN Battery Trickle Charge >> Checking Charge State Of An AGM Battery Using A Battery Tester

Checking Charge State Of An AGM Battery Using A Battery Tester

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  1. Check the battery charge state according to the operating instructions for the relevant rapid-start battery charger or battery tester.

    Evaluating the test results and subsequent procedure: 

Open-circuit voltage in volts Charge state in % Evaluation and procedure
12.7 - 12.5 100 - 80 Charge state OK
12.5 - 12.2 80 - 50 Charge state reduced, recharge battery and observe an inactive period of two hours after charging.
12.2 - 11.6 50 - 10 Battery flat; recharge battery and observe an inactive period of two hours after charging.
below 11.6 below 10 Battery totally discharged; replace battery.
270619 REMOVING AND INSTALLING BATTERY
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