Scheduled Maintenance Guideline

In effort to prevent loss do to premature battery failure, the following inspection and maintenance schedule is based on the IEEE Std 1188 and is always recommended. Scheduled maintenance and the records of each service interval are generally required for quick and undisputable warranty claims.

Some maintenance procedures may require special tools or skills. You can count on our team to support your needs. We can provide service for any of these procedures; contact our Service Department at (800) 507-6803 for information on purchasing a DBSS Battery Maintenance Agreement.

Initial Inspection:

After the battery has been on float for one week, measure the following data and record on the installation report. (Take readings on the end of the cell post only. Do not probe the connector or fastener.)

Ambient temperature in the battery room or area should be measured. If the temperature is above 77"F (25"+C), environmental controls should be used to control the temperature. If temperature controls are impractical, the float voltage must be compensated for Charger output current. (Temperature compensated)

  • Charger output voltage.
  • Overall float voltage measured at battery terminals.
  • Charger imposed AC ripple current and or voltage.
  • Condition of ventilation and monitoring equipment.
  • Condition of battery (Appearance, Cleanliness, Accessibility).
  • Cell number.
  • Float voltage
  • Internal Ohmic Value.
  • Negative terminal temperature.
  • Intercell Connector Resistance.

Visually inspect each battery for signs of wear to the case, cover and terminals, electrolyte leakage, and corrosion at the terminals, connections or racks.

1.) Monthly Inspection:

The following should be checked and recorded at monthly intervals:
Ambient temperature in the battery room or area should be measured at the same point(s) every month. If the temperature is above 77"F (25"+C), environmental controls should be used to control the temperature. If temperature controls are impractical, the float voltage must be compensated for temperature.

  • Charger output current.
  • Charger output voltage.
  • Overall float voltage of each battery string should be measured at the battery terminals.
  • Condition of ventilation and monitoring equipment.
  • Condition of battery (Appearance, Cleanliness, Accessibility).
  • Cell number.

Visually inspect each battery for signs of wear to the case, cover and terminals, electrolyte leakage, and corrosion at the terminals, connections or racks.

2.) Quarterly Inspection:

The quarterly inspection should include the item 1(Monthly) and the following:

  • Float voltage.
  • Internal ohmic value.
  • Negative terminal temperature.
  • Intercell connector resistance.

3.) Annual Inspection:

The annual battery inspection should include the items in 1(Monthly) and 2(Quarterly) and the following:

  • Cell-to-cell and terminal connection detail resistance of entire battery.
  • AC ripple current and/or voltage imposed on the battery.