RD4000 Locating System User Manual
Page 20
Charging rechargeable batteries
Caution. If the batteries are being recharged from a vehicle cigarette lighter and the vehicle is being
driven, the battery packs must be removed from the transmitter or receiver whilst charging
takes place.
Do not use the receiver while the battery pack is being charged with the battery pack fitted to
the receiver.
Note: When charging batteries for the first time, charge them for 16 hours regardless of the indicated battery
level.
The rechargeable battery pack can be recharged via a vehicle cigarette lighter or via a mains power adaptor
with the pack fitted to the receiver or with the pack removed. However, we recommend that you remove the
battery pack from the receiver for recharging, particularly in hot ambient conditions. This will increase the post-
charge battery capacity and enhance overall battery life. Ideally, the battery pack should be charged at an
ambient temperature of between 0
0
C and 30
0
C.
To charge the batteries, remove the rubber protection cover from the front of the battery pack housing and plug
the charger lead (supplied) into the receiver connector. Plug the other end into the vehicle cigarette lighter
socket or plug the mains power adaptor (contact Radiodetection for adaptor details) into an appropriate power
supply and switch the power supply on. Follow the manufacturer’s instructions for operating the charger. When
charging is finished ensure that you re-fit the rubber protection cover.
Note: It is normal for the battery pack to become warm during charging.
RD4000 Rx Battery Charging LED Indications
Under normal charging conditions, the battery charge status indicator LED illuminates and is coloured red. Once
the batteries have finished charging the LED colour changes to green to indicate that charging is complete.
If the battery pack is completely discharged, or has been left in hot ambient temperatures, and the batteries
have become hot, the LED will flash red/green as soon as the battery charger is plugged in and may continue to
flash for sometime. In the case of a hot battery pack, the LED will turn red once the battery pack has cooled
down, indicating that the batteries are charging normally. The LED will turn green once charging is finished.
If the LED is flashing red/green because the batteries are completely discharged, the LED will continue to flash
red/green and trickle charge the batteries until they have reached a pre-determined charge level. The LED will
then turn red, indicating that the batteries are charging normally. The LED will turn green once charging is
finished.
The battery pack can be safely removed from charge at any stage in the charging cycle without affecting the
battery life. However, the batteries will only be partially charged.
The rechargeable batteries are not replaceable. If a fault occurs with the rechargeable battery pack, it must be
returned to Radiodetection for repair.
