Operation
57
Charging time
Charge time is often of little consequence when the battery is used in a
standby
operation. An
example of this is when the battery is used to supply the starting system of a diesel generator. During
normal operation, the battery is at full capacity and the battery charger is used to maintain the float
voltage of the battery. The battery is only drained when the generator is called to start. As the
generator has a DC charging alternator fitted, the battery is quickly recharged when the generator is
running. Should the generator stop before the battery is fully recharged, the DSE9100 & DSE9200
series will continue to recharge the battery until it is fully charged.
Typically a battery will charge from flat to 80% capacity in 16hrs when when charged at C/10.
For example charging a 50Ah battery for 16hrs at 5A will charge the battery to 80% of its full capacity.
Remember to take into account any other standing load such as control panel requirements when
calculating how much power is ‘left’ to charge the battery.
6.1.4 BOOST MODE
(Not applicable to DSE9150 12V 2A, DSE9150 12V 3A or DSE9155 30V 2A)
CAUTION: Boost mode is intended for equalisation of the cells in lead acid batteries and
should not be operated when the battery charger is connected to other battery types or when
the charger is used as a power supply only. If in doubt, consult your battery manufacturer.
Boost mode is operated by connecting the
BOOST
terminals together (for instance with an external
switch or timer circuit). This will raise the battery charger floating voltage by 0.8V DC.