Chevrolet Corvette Owner's Manual page 237

236 Vehicle Care
4. Connect the AC cord to the
wall socket.
START CHARGING
1. After the accessory power
outlet has been connected to
the vehicle, connect the
charger to the wall socket.
2. Model 1052 charger starts
charging as soon as the mains
supply is connected.
3. Normal charging will be
indicated by the lamp for bulk
charge or the lamp for
maintenance charge. When the
lamp for maintenance charge is
lit, it means that the battery is
fully charged. The charge will
restart again if the voltage
drops.
4. Charging can be stopped at
any time by disconnecting the
mains supply. Always
disconnect the cable from the
wall socket before
disconnecting the power outlet.
5. If the charging lamp and the
maintenance charger lamp are
flashing alternately:
If the lamps are flashing a few
times per second this could be
due to a poor contact between
the charger and the battery or
that the battery is sulphated.
Check the connection to the
battery. If the lamps flash for
more than 60 minutes, this
indicates that the battery is
damaged and needs to be
replaced. If the lamps flash at a
few minute intervals, the
battery has a high self
discharge and may need
replacing.
CHARGING STEPS
The charger has a four step, fully
automatic charging cycle. At the
start of charging, the battery charger
delivers maximum current to the
battery and the battery voltage
increases steadily to maximum
voltage. At this point the voltage will
be regulated and held at a constant
level by the charging current, then
dropping gradually. When the
charging current has dropped below
0.4A, the charger switches to
maintenance charging.
If the battery is loaded and the
battery voltage drops to 12.9V, the
charger automatically reverts to the
start of the charging cycle.
Charging steps:
1) Desulphation : Desulphation
with pulses for sulphated batteries.
2) Bulk : Main charging where
around 80% of the charge takes
place. The charge is carried out at
constant charge until full voltage
has reached the set level.
3) Absorption : Final part of the
charge up to almost 100%. The
terminal voltage is kept constant at
a set level. During this step the