Cummins/Onan — Battery Replacement
Maintenance
From a Cummins/Onan owner's manual covering: Onan P4500iDF, P4500iDF, P4500iDF Inverter. Check it applies to your exact model before use.
Applies to: Cummins/Onan P4500iDF, Cummins/Onan P4500iDF Inverter
Before you start
- The battery contains sulfuric acid (electrolyte) which is highly corrosive and poisonous.
- Battery posts and terminals contain lead and lead compounds. Wash hands after handling.
Parts for this job
- A058U961 Battery — Cummins/Onan P4500iDF Amazon eBay $44.99
Part numbers from the service-parts lists for Cummins/Onan P4500iDF, Cummins/Onan P4500iDF Inverter. Verify against your serial number before ordering; some links are affiliate links.
Procedure
- Remove the battery access cover.
- Remove the quick-connect plug and battery strap; remove the battery from the unit.
- Disconnect the quick-disconnect cable leads from the battery.
- Connect the white (-) quick-connect cable to the battery negative terminal.
- Connect the red (+) quick-connect cable to the battery positive terminal.
- Install the battery and secure the battery strap on the mounting base.
- Connect the quick-connect plug and install the battery access cover.
Full service-parts list: Cummins/Onan P4500iDF →, Cummins/Onan P4500iDF Inverter →
Source: Cummins/Onan owner's 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.