Cummins/Onan — Equalize Charging
Operation · Battery bank (Wet Cell only)
From a Cummins/Onan owner's manual covering: 1.5HJBAA, 2.0HJBAA, 2.5HJBAA, 3.0HJBAA. Check it applies to your exact model before use.
Browse Cummins/Onan generators & specs →
Before you start
- Disconnect all DC appliances before equalizing to prevent damage from the high equalize charging voltage.
Procedure
- Go to BATT CHARGE RATE to get to the EQUALIZE CHARGE screen. Press EQUAL.
- Review the safety pages and press START.
- If the batteries are not fully charged, press OK and wait for full charge.
- Charging current ramps up to 5 percent of battery bank capacity; equalize voltage 15.5 V is held for 30 minutes and time remaining recalculated.
- Press STOP at any time; total charging time, including up to 30 minutes cooling, will not exceed 6 hours.
- Batteries must be attended while equalizing; be prepared to stop charging if a cell overheats, overflows, splits or cracks.
Specs & values
- Equalize voltage 15.5 V
- Charging current 5 percent of battery bank capacity
- Total charging time not to exceed 6 hours
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.