10
Maintenance
9
Put on a mask or a pair of protective glasses when approach batteries, make sure not put batteries next to fire/
smoking place.
Proper maintenance can prolong battery life and help it meet the design requirements. A good battery
maintenance program can help to judge when battery need to be replaced. If the maintenance way differs from
this manual, users can make the maintenance program according to battery usage and using reliability. All
maintenance needs to be executed by professionals.
1
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Inspection
Try to make all inspection under float charging conditions. Inspection should be conducted according to
instruction manual from the supplier and record all test data for future collation.
1
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1 Monthly inspection
General inspection items and record of every month are as follows
：
1
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1
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1 Float charging voltage of all batteries.
1
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1
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2 Output current and voltage of charger.
1
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1
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3 Ambient temperature, ventilation and monitor equipments.
1
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1
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4 Visual inspection of battery bank appearance:
1
）
Inspect battery appearance: Check whether there is corrosive phenomenon on terminals, connectors,
battery racks.
2
）
Clean batteries, racks and battery region.
3
）
Inspect whether there is crack or leakage on battery.
4
）
Inspect whether there is deformation of battery and rack.
1
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2 Quarterly inspection
Quarterly inspection includes the following items; please record all the inspection data. ( Need to collate with
previous records.
）
1
）
Internal resistance of each battery cell;
2
）
Temperature on negative terminals of each battery cell;
3
）
Inspect connect resistance at random ( at least check 10% or 6 connectors), if resistance is significantly
higher than the initial value, then need to check all connectors' resistance and dig out reason. (Notice: Please
inspect different connectors every quarter.)
1.3 Yearly inspection and initial inspection
For Yearly inspection and initial inspection, conduct the following checking and record items.
1
）
Check and record internal resistance of all connectors;
2
）
Try to check AC current and voltage from rectifier.
1.4 Special inspection
Batteries need inspection to check if they get damaged in special situations (such as over-discharge, abuse
use due to charging machine failure, etc). The inspection includes all yearly checking items and needs to make
records.
2. Ripple Voltage of rectifier
We recommend ripple Voltage of rectifier should not be bigger than 0.5% of charging voltage, and librating
ripple time should be shorter than 8 millisecond.
