Characteristics And Handling Of The Nickel Metal Hydride Battery (Jwb2) - Yamaha JWX-1 Owner's Manual

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.
When in use on the wheelchair:
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Temperature range between 0 to 35°C (32 – 95 °F)
When removed from wheelchair and stored:
Temperature range between 10 to 25°C (50 – 77 °F)
When charging:
Temperature range between 10 to 25°C (50 – 77 °F)
• Storing the battery in excessively high or
low temperatures will speed up its degra-
dation, and its capacity 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.
(2) Memory effect and refresh charging
When 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 recharg-
ing (refresh charging).
When recharging, if the refresh lamp on the char-
ger flashes, press the refresh button to perform a
refresh charge cycle.
Refresh charging takes longer than normal charg-
ing.
For details on refresh charging, refer to "8.5. Refresh
Charging the Nickel Metal Hydride Battery (JWB2)"
(Page 60).
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CHARGING REFRESH