www.enersys.com Publication No. US-FL-IOM-002 January 2007 Page
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10.0 BATTERY TAPS
Connections made to a battery for tapping a certain group of cells to provide a voltage other
than the total battery voltage is NOT recommended and can void the warranty. Tapping results
in an imbalance of the system during charging and discharging, causing unsatisfactory
operation.
11.0 PILOT CELL
One cell in a battery is usually selected as a pilot cell. It becomes an indicator of the general
condition of the entire battery with regard to voltage, gravity and temperature. Pilot cell readings
serve as an interim indicator between regularly scheduled voltage and gravity readings of the
complete battery. The thermometer should be permanently mounted in the pilot cell flame
arrestor (except in seismic areas).
Because a small amount of electrolyte may be lost in taking hydrometer readings, you should
select a different cell as the pilot cell annually.
Read and record the pilot cell voltage on a monthly basis between regularly scheduled
individual cell readings.
12.0 MAINTENANCE
EnerSys also recommends to follow IEEE Std. 450 for the battery maintenance in
addition to the following:
12.1 Battery
Cleaning
Observe the battery for cleanliness at regular intervals. Keep cell terminals and connectors free
of corrosion. Terminal corrosion may adversely affect the performance of the battery, and it
could present a safety hazard.
12.1.1 Standard
Cleaning
To perform a standard cleaning of the battery, follow the procedure below:
1.
Disconnect the battery.
2.
Wipe off any accumulation of dust on the cell covers with a cloth dampened with clean
water.
3.
If the cell covers or jars are damp with spilled electrolyte, wipe with a cloth dampened with a
solution of sodium bicarbonate and cold water, mixed in the proportions of 1.0 lb/1.0 gal (0.5
kg/5.0 liter) of water. Follow this by wiping with a cloth dampened in clear water and then
wipe dry with a clean cloth.
Summary of Contents for PowerSafe Data Safe
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