7
• Do not attempt to charge batteries that are not
rechargeable.
• Please check that the specification for your
battery allows for the maximum charge current
indicated on the charger. If in doubt; contact the
battery manufacturer for details.
• Please check that the specification for your
battery allows for the environmental conditions
present during charging.
Do not charge batteries at too high or too
low temperatures.
• Please ensure correct polarity when connecting
to the battery terminals. Reverse polarity conne-
ction may, in some chargers (see the charger’s
specification), result in a fuse blowing, leaving
the charger useless.
• The charge cycle starts when the charger is
connected to the mains.
• If the charger is disconnected from the mains
voltage during a charge cycle the charger will
start a new charge cycle when it is reconnected
to the mains.
• When charging is complete, disconnect the
charger from the mains before removing battery
connections.
Safety features
The embedded microprocessor & charge program has
numerous features for safe battery charging
• The -dV level will adapt to the number of cells
and will be approximately equally sensitive for
all number of cells.
• The safety timer will protect the batteries if a
-dV signal fails to appear during charging. It is
normal to have a safety timer that is longer than
the max. charge time.
• Some battery cells may give a voltage drop
during the initial part of the charge cycle.
To avoid interruption of the charge cycle the
charger has a start-timer that prevents -dV
detection during the first minutes of the charge
cycle.
• The charger is programmed to disregard
large voltage fluctuations due to connection
of external loads etc. Such false -dV signals
will be detected by the software and will be
disregarded.
• Top-off charge following –dV detection ensures
that all cells in a battery pack reaches full
capacity (are balanced) prior to trickle charge.
• The charger output is protected against reverse
polarity, in most cases by an automatically
resettable fuse.
• The charger is designed for the lowest possible
leakage current from the battery when mains is
disconnected (<1mA). Even so, it is recommen-
ded that the batteries are disconnected from
the charger when mains is not connected.
• On request the charger may be supplied with
battery temperature monitoring. A built-in
temperature change control (+dT/dt) secures
optimal charge with a built-in NTC resistor in
the battery pack.
• Other functions such as 0dV detection and
timer only charge is available upon request.
Most charge parameters may be altered using
an external programming tool. Contact Mascot
for details.
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