Item
Content
Standard
Maintenance
3-Battery
Appearance
Inspect
the
battery
container
for
bulging,
leakage and damage.
Normal
Appearance
Confirm the reason for any abnormal
appearance, if it affects normal use, replace
the battery.
Check for dirt stains
Clean Appearance
Clean dust and dirt with damp cloth
Inspect the connection
cables, terminals, etc. for
oxidation, rust & other
abnormalities
No oxidation, rust
If you find oxidation or rust, replace the
connecting wire, and swab terminal with
Vaseline etc.
4- Joints
Use hex or torque wrench
to tighten loose bolts.
Securely connected If found bolt loosened, tighten it
1-Battery cables,
terminals clean /
non-corrosive.
2- Follow the installation
sequence: 1. Spring
washers 2. Flat washers
3, Nuts
No evidence of
corrosion
If slight corrosion found after connecting bar
removed, clean it with cloth. If severe
corrosion, replace the connection bar and
clean terminal with sandpaper before
tightening.
5-Safety Valve
Testing
Inspect for white
crystalline or liquid
surrounding the safety
valve.
No crystalline or
liquid surrounding
the safety valve
1-For crystalline, use a dry cloth for
cleaning.
2-If there is crystalline or liquid, clean it with
a dry cloth. Check and tighten the safety
valve
2.2 Quarterly Maintenance Inspection Items
In addition to the monthly maintenance items above, inspect the following items:
Item
Content
Standard
Maintenance
1- Measurement of
each battery’s
floating voltage
Measure each battery’s
floating voltage by using
multimeter.
Battery floating
voltage differential
pressure must meet
the following
values:
2V series 90 mV
6V series 240 mV
12V series 480 mV
If there are deviations from the reference
values, first discharge the battery group and
then equalizing charge. After equalizing
charge is completed, change to float charge
and run for two months. If there are still
deviations from the reference values, replace
and recycle the battery.
2-Use the
equalizing charge
to recover the
batteries which
have either lower
capacity or
discharge voltage
than the other
batteries.
Use the equalizing
charge to charge the
battery 10 hours or
more. In case a battery
has a severe deviation
compared to other
batteries, perform
charge / discharge
cycles three times.
Single battery
discharge voltage in
the battery group
must meet the
following values:
2V: 200mV, 6V:
350mV
12V: 600mV
If the battery performance cannot be
recovered, it must be replaced.
Operation and
maintenance
20