BERG BENOMIC STAR 300 Technical Handbook page 35

Discharging the battery to less than 20% of its capacity has a negative effect on
both the battery and the charger. Only charge the batteries when the battery condition meter
is in the red zone, this is beneficial for the lifecycle of the batteries, electric motor and the
drive regulators! Always recharge a flat battery immediately, as this increases the life-cycle
substantially. It is important to check the specific gravity of the battery acid at least once a
week, though it should certainly be done each month using a hydrometer (fig. A+B and table
below).
The specific gravity of a fully charged battery should be 1280 g/l:
100% sg 1280 g/l
80% 1240
60% 1210
40% 1170
20% 1140
Before charging, disconnect the pipe rail wagon at the
main switch. When charging batteries, always connect
them to the charger before switching it on. After the
batteries have been charged, switch off the charger
first, then disconnect the batteries.
Overcharging can cause damage to the batteries
through boiling the battery acid dry.
It is advisable to use a modern battery charger with an
automatic cut-off - these are available from Berg
Hortimotive. Only use a charger type that is suitable
for the batteries being charged! (see charger
instructions)
The charging process should never be interrupted -
charging should be completed - see the charge
indicator.
When charging batteries, do not make repairs to the
pipe rail wagon nor carry out cleaning or any other activities.
Turn off everything that consumes electricity before removing the batteries - this reduces the
possibility of creating sparks.
Always disconnect the earth cable (-) first when removing the batteries. When reinstalling the
batteries, connect the earth cable (black) last.
WARNING!
Always connect the positive terminal (+ = red) to the positive pole and the negative
terminal (- = black) to the negative pole on the battery.
Battery fluid is corrosive - avoid contact with clothing, skin and eyes.
Wash battery acid splashes on clothing or skin immediately with soap and water - thereafter
thoroughly rinse in running water.
Any acid splashes to the eyes must be rinsed for at least 5 minutes in clean water and a
doctor consulted immediately!
Translated user manual
= 12.7 volts
12.5
12.3
12.1
11.9
BENOMIC STAR
Charged battery
Discharged
battery
reading
The float must be
able to float freely
in order to read the
correct value
SG scale
reading
float
battery acid
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