FUTABA 6YG-FM Instruction Manual page 12

Do not charge Dry Batteries.
Charging dry batteries will cause overheating or breakage and electrolyte leakage and
result in burns or damage by the chemical content.
Charging the Nicad Battery
Never plug the special slow charger into an AC outlet other than the voltage
specified shown on the charger.
If the charger is plugged into an AC outlet other than the specified voltage, overheating,
sparking, etc, may cause burns, fire, etc.
Use the special slow charger, or R/C quick charger, sold separately, to charge the
R/C nicad batteries.
Overcharging will cause burns, fire, injury, or blindness due to overheating, breakage,
electrolyte leakage, etc.
When not using the nicad battery charger, disconnect it from the AC outlet.
The transmitter and receiver nicad batteries can be charged simultaneously or
independently.
1. Connect the charger transmitter connector to the transmitter charging jack and
the charger receiver connector to the receiver servo nicad battery.
2. Connect the charger to an AC outlet.
3. Check that the charging LED is lit.
4. At the end of charging, disconnect the charger from the AC outlet.
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