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WARNING Only use the dedicated charger (CU-7001, C-700
or C-750) for charging the rechargeable battery
cartridge.
Using a different type of charger could cause
battery-rupture or leakage of battery fluid and
result in a fire, bodily injury, or serious damage
to property.
CAUTION Never charge a wet or damp rechargeable bat-
tery cartridge.
Doing so could cause the batteries to break, gen-
erate heat, rupture or burn.
•When replacing dry cells, always replace both of them with new alkaline manga-
nese batteries (LR6).
•You may charge the rechargeable battery cartridge with the optional CU-7001
communication unit or optional C-700/C-750 charger. For the charging proce-
dure using the CU-7001, refer to Chapter 5. For that using the C-700/C-750, refer
to the "C-700 User's Manual"/"C-750 User's Manual."
•If the "Charge the battery!" or "Replace the batteries!" message appears after the
BHT undergoes any shock or impact, turn the power off and on and then check the
battery output level. The battery may not have run out.