Husqvarna 967187001, Workshop Manual

Page: 141 / 144

English –
141
Batteries and maintenance
14.8 How to Take Care of Batteries
1. Always keep the battery acid between 5 and
15 mm over the lead plates in the batteries, top up
with distilled water or battery water.
2. Never leave the batteries in a discharged state.
3. Charge the batteries regularly and on special
occasions, preferably ahead of and during the
winter season.
4. Inspect the ventilation, make sure there is no
dirt in the way so that the ventilation does not
work (the ventilation is small holes in plugs on the
batteries, 6 on each battery).
5. Keep the battery clean and dry. Clean the
battery terminals to avoid corrosion.
6. Inspect the cables for damage and loose
connections.
14.9 Why Does a Battery Get Warm
When Charging?
A probable reason for the battery getting warm is
that it has been discharged and therefore slightly
sulfated. Try charging the battery with a low current
(Amperage) for two to three days. NB! This must
be done under controlled conditions with the
correct type of charger so that the battery does
not dry out or become too warm. An unpleasant
aroma may result from charging a sulfated battery
until the sulfating has disappeared. If the battery
is not in working order after charging, it must be
changed.
14.10 Explosion Risk!
In order for batteries to explode, there must often
be an external influence that ignites the hydrogen
gas that forms in the battery when charging.
Generally, the battery has been charged, but not
ventilated sufficiently before the charger has been
removed. Static electricity is a common cause
of ignition of the hydrogen gas. Take care with
clothing of synthetic material, especially in dry
winter air. Turn off the charger and wait for a few
minutes before disconnecting it from the machine
in case there is any residual hydrogen gas from
charging.
14.11 What is the Normal Charge Cur-
rent and Charge Voltage of a Battery?
All batteries are different and therefore require
different charge current and voltage. Generally, a
battery should be charged with about 10%-15%
of its capacity in Amperes. For example, a 60 Ah
battery is charged with 6 A - 9 A. Generally, a
12V battery is charged with a voltage of 14.4 V
(14.3 V-14.5 V). Husqvarna's charger uses
a charge voltage of 14.4 V (14.3 V-14.5 V).
Husqvarna's charger uses a maximum current
of 11 A.
14.12 When Does a Battery Freeze?
A fully charged battery freezes at -67 °C. That a
battery can freeze at much milder temperature
is because battery acid changes to water when
the battery is not charged. A discharged battery
freezes at -7 °C. That is why it is very important to
make sure the battery is charged if the machine is
stored in a cold room for the winter.
14.13 What Does a Battery Contain and
Where Can it Be Disposed Of?
A battery contains lead, acid, and plastic. All this
is recyclable. If it is only a few scrap batteries, you
can take them to municipal collection points or in
special return boxes available from where batteries
are sold.
14.14 Husqvarna's Battery Charger
The battery charger is designed for use only on
lead-acid batteries.
The battery charger must be connected to a
grounded wall socket 230V 50Hz AC.
The battery charger shall be used in dry and well
ventilated spaces.