OutBack Power EnergyCell 1100RE, Installation Manual And Owner'S Manual

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Publication No. US-VR-OM-002
March 2008
www.enersys.com
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8.2.1 Float Charge Method
A float charge is given after the battery has been given its initial charge. To perform a float
charge, follow the procedure below after the battery has been given its initial charge:
1. Determine that the VOLTS PER CELL nominal value is within the 2.23 to 2.27 range.
This can be done by measuring the total battery string voltage and dividing by the
number of cells in the string. Make sure the voltage does NOT exceed the maximum
voltage for the connected load.
2. Adjust the charger to provide the recommended float voltage at the battery terminals.
Do NOT use float voltages HIGHER or LOWER than those recommended. Otherwise
reduced battery life or reduced capacity will result.
3. Check and record battery terminal voltage monthly for accurate calibration.
4. If the VOLTS PER CELL average voltage is above or below the range recommended in
Procedure 1, adjust the charger to provide proper voltage as measured
at the battery
terminals.
When the mSeries, DDm, DDS, DDV and SC -type cells are new, expect to see
variations in float voltage from cell to cell within a string. These cell voltages should
be within ±0.09 volts of the nominal setting). After one year in service, the mSeries,
DDm, DDS and DDV-type cells will float within ±0.05 volts of the nominal setting.
When the DGX -type cells are new, expect to see variations in float voltage from cell
to cell within a string (within ±0.13 volts of the nominal setting). After six months in
service, the cells will float within ±0.08 volts, and after one year, ±0.06 volts of the
nominal setting