4
CHARGING light will darken and the green READY light will come on. At this point the
battery is fully charged. When the charger is in the float charge mode a constant current
(1/4 that of the rated output current) is delivered to the battery to keep it fully charged.
Most nickel cadmium batteries may be left connected to the charger in the READY (float)
mode, indefinitely, without a danger of overcharging. However, we recommend you refer to
the battery manufacturers’ documentation for the suitability of float charging your battery.
CHARGING NOTES AND TIPS
The batteries should be fully discharged before being put onto charge. This has two
benefits: the batteries will not be overcharged and in the case of nickel cadmium batteries
they will be less likely to develop a "memory effect".
The
safe charging curve
graph below represents what size batteries can be charged without
damaging the charger (for each battery capacity or charge current). The charger is designed
to charge batteries at the C/10 charge rate (ca 10). If your battery capacity is
2.8 AHr (2800 mAHr) then the charger should be rated for 280 mA (2800 +10). Refer to
your battery documentation to see if the charger will charge your battery properly.
Example: If your charger is rated for 400 mA then it will recharge 4 AHr batteries between
4.8 to 13.2 volts (4 to 11 cells). It will safely charge a 14.4 volt (12 cells) battery as long as
the charger receives a full 115 volts ac input. If the input voltage is below 115 volts, at that
charge voltage, the maximum current will begin to drop and the battery may not be fully
charged. Attempting to charge 4 AHr batteries between 1.2 to 3.6 volts (1 to 3 cells) will
cause the charger to overheat and possibly be damaged - the batteries will not be damaged.
Smaller capacity batteries will be overcharged and larger capacity batteries will be
undercharged.
Power-Sonic can calibrate units to exactly match your charging needs. Call our sales
department for technical information and pricing. We are able to Custom match the charge
current to your battery capacity.
TROUBLESHOOTING
NO INDICATOR LIGHTS
-If the indicator lights are both dark when power is applied and
the charger is properly attached to a battery, check to see if the receptacle is controlled by
a light switch or power strip switch.
CAUTION: TRYING TO
CHARGE A BATTERY
UNDER THE CHARGING
CURVE WILL CAUSE
THE CHARGER TO
OVERHEAT
UNDERCHARGE @ 105V~
FULL CHARGE @ 115V~
