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When in use on the wheelchair:
Temperature range between 0 to 35°C
When removed from wheelchair and stored:
Temperature range between 10 to 25°C
When charging:
Temperature range between 10 to 25°C
• Storing the battery in excessively high or
low temperatures will speed up its degra-
dation, and its capacit y will rapidly de -
crease.
• Using the wheelchair in excessively low
temperatures will cause the battery capac-
ity to rapidly decrease. For information on
degradation, see “Battery’s deterioration
characteristics” on the next page.
8.3. Characteristics and Handling of the Nickel Metal
Hydride Battery (JWB2)
(1) Ambient
temperatures
Depending on the ambient temperature, the distance that can be traveled be-
comes shortened.
In order to maximize the battery’s performance, it is recommended that you use
the battery under the following conditions.
(2) Memory effect and refresh charging
When a shallow discharging and charging cycle
is performed repeatedly on a nickel metal hydride
battery, a phenomenon called the memory effect
occurs, in which the actual usable capacity de-
creases.
The memory effect can be prevented and eliminated
by fully discharging the battery and then recharging
(refresh charging).
If refresh charging is necessary, the microcomputer
in the battery sends the information to the charger
and the refresh lamp on the charger flashes.
When recharging, if the refresh lamp on the char-
ger flashes, press the refresh switch to perform a
refresh charge cycle.
Refresh charging takes longer than normal charging.
For details on refresh charging, refer to “8.5. Refresh
Charging the Nickel Metal Hydride Battery (JWB2)”.
Refresh switch
Refresh lamp
