13
4|
A weak or bad cell is developing.
5|
Battery was watered excessively previous to testing.
Batteries in conditions 1 - 4 should be taken to a specialist for further evaluation or retired from
service.
Open-Circuit Voltage Test
For accurate voltage readings, batteries must remain idle (no charging, no discharging) for at least
6 hrs, preferably 24 hrs.
1|
Disconnect all loads from the batteries.
2|
Measure the voltage using a DC voltmeter.
3|
Check the state of charge with the table below.
4|
Charge the battery if it registers 0% to 70% charged.
If battery registers below the Table 1 values, the following conditions may exist:
•
The battery was left in a state of discharge too long.
•
The battery has a bad cell.
These batteries should be taken to a specialist for further evaluation or retired from service.
Summary of Contents for AP48-04
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