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Cummins/Onan — Custom Battery Parameters

Adjustments · Battery charging parameters

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.

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Before you start

  • Only trained and experienced persons may change BATTERY configuration parameters.
  • Incorrect parameter settings can cause excessive battery gassing.

Procedure

  1. Press the INVERT ON / OFF button to disable Inverting.
  2. Select BATTERY on CONFIGURE INV. PG2 and press ENTER.
  3. On the BATTERY SETUP screen simultaneously press and hold both the + button and the - button for 5 seconds.
  4. On the CUSTOM BATTERY screen press NEXT to scroll between fields and the + / - buttons to change values.
  5. Press DONE to save the settings; the battery TYPE field will indicate CUSTOM.
  6. To restore the Onan preset configuration, pick Wet Cell, Gel #1, Gel #2, or AGM on the BATTERY SETUP screen.

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.

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