5
Batteries and Charger
The TDI-BH includes a rechargeable NiMH battery pack as
the primary power source, and a standard alkaline battery pack
as a backup. Fully charged, they supply a nominal 12 volts (the
NiMH may be slightly less) and will power the TDI-BH for
about 4-6 hours. The TDI will operate until the batteries drop
to about 8.5 volts, at which point the low battery LED will turn
on.
A drop-in charging cradle (Part Number 509-0036) is used
for recharging the NiMH battery. With the wall transformer
connected to the cradle and plugged into a wall socket, simply
drop the NiMH pack into the cradle. An LED indicates the
status of the charge cycle; when the LED turns off, the charge
cycle is complete and the charger will automatically switch to
a trickle mode. A typical recharge time of a depleted NiMH
pack is 1-2 hours. It is normal for NiMH batteries in storage to
slowly lose their charge over time; be sure to top off them off
before going out.
The alkaline pack is designed so that it cannot be used with
the charger, and trying to recharge alkaline batteries can cause
them to burst and leak. Individual NiMH batteries can be used
in the alkaline tray; it is recommended that the batteries be re-
moved and charged using the manufacturer’s charging system.
