Battery Load Tester
WARNING: This page is about a different variant/trim than selected.
Determine the battery voltage drop when discharging at fixed load (120A) for a 5 seconds.
- Connect the tester to the battery correctly (Red clamp to battery (+) terminal, Black clamp to battery (-) terminal).
- Turn ON the test switch (A) of the tester 5 seconds.CAUTION:
- Take care not to contact the load resistance top heating part (D) of the tester.
- Do not test with a load of not recharged for more than 10 seconds.
- Check the instructions for the meter for 12V and refer to the below. (the green areas varies according to the battery cold cranking ampere (CCA), so check the battery specification.)
| Cold Cranking Ampere (CCA) | Voltage (V) |
|---|---|
| 1000A | 11.2V |
| 800A | 11.0V |
| 600A | 10.7V |
| 400A | 10.4V |
| 200A | 10.0V |
NOTE:
At low temperatures, temperature compensation is applied to the battery termination voltage refer to the below.
- -7°C to -17°C (19.4°F - 1.4°F): Application lower than 1 step.
- -18°C to -27°C (-0.4°F to -16.6°F): Application lower than 2 step.
- Green: Good condition of battery
- Yellow (WEAK): Good condition of battery, but requires recharging.
- Red (BAD): Battery over-discharge or poor condition, recharging the battery and retest to continue lowering without stopping in the yellow area (WEAK) requires battery replacement.
- Start the engine to check the state of charge by the alternator.
- Connect the clamp of tester to the each terminal of battery.
- Start the engine and check the tester.
- Green (OK): Alternator charging good
- Red (Left side): Alternator charging poor (Inspect the charging system)
- Red (Right side): Alternator over-charging (Inspect the charging system)