Karmann Ontario 580, Инструкция по эксплуатации, Страница: 51 / 78

ELECTRICAL EQUIPMENT
7-7
1. Negative battery charging balance =
Loss of capacity = Battery failure
Possible cause:
• insufficient charging time (less than 12 hours)
using the charging device
• defective charging device
• unsuitable charging device
• by too many subsequently installed electrical
consumers (negative energy balance)
2. Totally discharged battery
Possible causes:
• consumers that have not been switched off
• slow discharge in the milliampere range
despite switched off main switch due to one
of the following for example:
• electro-magnetic heater shut-off valve
• solar regulators (output)
• the control panel
• a charging device (output)
• silent consumers (e.g. clocks, control lamps,
LEDs).
Example: Silent consumers can consume
55 milliamperes of current. This means that
approximately 1.32 Ah can be taken out of the
battery in a day. A fully charged battery is
therefore completely discharged in about
2 months! As a result of this type of damage,
only part of the battery's capacity can be
used after recharging or the battery is destroyed
by a short circuit in on of its cells.
3. Self-discharging (independent of long-
term consumers).
At 20-25°C self-discharging is very low at
0.1% battery capacity per day. At temperatures
over 35°C, the self-discharge level increases
to 0.7 % per day, which is seven times higher!
When the vehicle is standing still in the summer,
the combination of constant consumers and
self-discharging without recharging using the
charging device results in even faster total
discharge of the battery.
Recommendation: recharge the battery using
the charging device at least once a month.
For further information, read the handling
notes that are attached to every battery.
• If the vehicle stands still for four weeks or
longer without a mains input, then the
minus pole of the body battery should be
disconnected!
• Switch off the consumers (e.g. water pump)
overnight or when you leave the vehicle.
Important facts about batteries
The body batteries are rechargeable power
storage units. The battery power that is
consumed has to be fully returned to the
battery. The charging unit is usually the only
tool used to recharge the body battery.
Charging with an unsuitable charging device
results in extreme sulphating of the battery
plates and therefore to "starvation" of the
battery. The generator or a solar power unit
are merely supportive charging facilities to
allow self-sufficiency for limited periods of
time.
What can lead to body battery malfunctioning
or failure?
Body batteries