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Cummins/Onan 5.0GenSet ES 1348 — Battery Care and Maintenance

For the Cummins/Onan 5.0GenSet ES 1348.

Applies to: Cummins Onan 5 0Genset Es 1348

Before you start

  • Lead acid batteries emit highly explosive hydrogen gas which can be ignited by electrical arcing or a lighted cigarette. Do not smoke while charging or servicing batteries.

Procedure

  1. Keep the battery case clean and dry.
  2. Make sure the battery cable connections are clean and tight.
  3. Coat the battery terminals with a mineral grease or petroleum jelly to reduce corrosion and oxidation.
  4. Identify each battery cable to be positive or negative before making any connection. Always connect the ground (negative) cable last.
  5. Maintain the electrolyte level by adding water (drinking quality or better) as needed for filling to split level marker.
  6. The standard battery charger will provide a constant charge rate of 1 amp during alternator operation. If the alternator is not operated often enough to keep the battery charged, connect battery to a separate charger at least once a month to maintain a full charge.

Tools required

  • Mineral grease or petroleum jelly

Source: manual:919-0120 Onan P-Series (spec J) Portable Genset Operators manual (12-1981).pdf. Figures and steps are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.