Volvo Penta Group 23 EDC III — Start with booster batteries
Operation · Battery
For the Volvo Penta Group 23 EDC III, from the Volvo Penta service manual.
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Before you start
- Ensure good ventilation; batteries give off explosive oxyhydrogen gas.
- Never confuse the position of the cables on the battery.
- The black (-) jumper cable must not contact the positive lead's connection to the starter motor.
- Do not touch connections during start attempt; risk of sparks.
- Do not lean over any of the batteries.
Procedure
- Check that the voltage of the booster battery is the same as the engine's system voltage.
- Connect red (+) jumper cable to positive of discharged batteries, then to positive of booster battery.
- Connect black (-) jumper cable to negative of booster battery and to a spot away from negative of discharged batteries.
- Start the engine and run at high idle about 10 minutes to charge the batteries.
- Switch off the engine; remove jumper cables in reverse order, one cable at a time.
Source: Volvo Penta service manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.