40
Note
3)
Recharging should take place in a room with an ambient temperature
range of 10°C to 40°C (50°F to 104°F).
4) The battery source will discharge when stored and should be checked
before using with instrument .
5) Be sure to charge stored battery source every 3 or 4 months and store in
a place at 30°C (60°F) or below. If you allow the battery to be completely
discharged, it will have an effect on future charging.
6) Recharging of the BT-51Q may sometimes take less than 9 hours be-
cause of its remaining capacity at time of charging.