Cummins/Onan Onan P4500i Inverter / P4500 — Battery Maintenance
Maintenance
For the Cummins/Onan Onan P4500i Inverter / P4500, from the Cummins/Onan operator's manual.
Applies to: Cummins/Onan P4500
Before you start
- The supplied battery charger is not a trickle charger; DO NOT use for more than 8 hours (overnight) to prevent overcharging.
Parts for this job
- A058U961 Battery Amazon eBay $44.99
Part numbers from the service-parts list for Cummins/Onan P4500. Verify against your serial number before ordering; some links are affiliate links.
Procedure
- Plug the charger into the battery charging port on the control panel.
- Plug the wall receptacle end of the battery charger into a 120 Volt AC wall outlet.
- Unplug the battery charger from the wall outlet and control panel jack after 8 hours of charging.
Tools required
- Battery charger Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Generator will charge the battery after 30–60 minutes of use
Full service-parts list: Cummins/Onan P4500 →
Source: Cummins/Onan operator'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.