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5
Checking electrolyte level
For conventional batteries it is required to
check the electrolyte level regularly.
Remove vent caps (taking care no spark
or open flame is nearby) and inspect the
level. Fluid should be 10 to 15 mm (3/8” to
5/8”) above top of all plates. If necessary
top up with distilled water. Replace vent
caps and charge the battery for 15 min-
utes at 15 - 25 Amps to mix electrolyte.
Checking specific gravity
Measure the electrolyte specific gravity of
the individual cells with a commercial
hydrometer. The hydrometer reading (see
table) indicates the state of charge.
Hydrometer reading of all cells should be
at least 1.200 and show less than 0.050
between high and low. If not, recharge or
replace battery. During checking the tem-
perature of the electrolyte should prefer-
ably be 20°C (68°F).
The gases emitted by the
battery are explosive! Keep
sparks and naked flames
away from the battery!
Do not allow battery acid to come into
contact with skin or clothing!
Wear protective goggles!
Do not rest tools on the battery!
Battery, cables and connections
Every 100 operating hours.
Maintenance
Specific
State of
gravity
charge
1.280
100%
1.200
50%
recharge
1.120
10%
recharge
immediately
VD00119
VD00120
Conventional batteries
Conventional batteries
340102.04 M2C5D506/M309 EN 14-04-2005 10:35 Pagina 31
