Olympus DM-420 - Manual (Page 17)

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Cautions concerning the rechargeable batteries
Read the following descriptions carefully
when you use the Ni-MH rechargeable
batteries.
Discharging:
The rechargeable batteries self-discharge
while this is not in use. Be sure to charge
them regularly before use.
Operating temperature:
The rechargeable batteries are chemical
products. The rechargeable batteries
efficiency may fluctuate even when
operating within the recommended
temperature range. This is an inherent
nature of such products.
Recommended temperature range:
When operating appliance:
0°C - 42°C/ 32°F - 107.6°F
Charging:
5°C - 35°C/ 41°F - 95°F
Storage for a long period:
–20°C - 30°C/ –4°F - 86°F
Using the rechargeable batteries outside
the above temperature range may result in
declining efficiency and shorter battery life.
In order to prevent battery leakage or rust,
remove the rechargeable batteries from the
products when you will not be using them
for a long time, and store them separately.
Notes
• This recorder is designed to fully charge
batteries regardless of their energy level.
However, for best results when charging
newly purchased rechargeable batteries
or batteries that have not been used
for a long time (more than one month),
it is recommended to fully charge the
batteries then discharge repeatedly for 2
to 3 times.
Power supply
• When disposing rechargeable batteries,
always observe the local laws and
regulations. Contact you local recycling
center for proper disposal methods.
• If Ni-MH rechargeable batteries are not
fully discharged, protect against short-
circuiting (e.g. by taping the contacts)
before disposing.