Characteristics And Handling Of The Nickel Metal Hydride Battery (Jwb2) - decon E-Drive PLUS User Manual

8.3. Characteristics and Handling of the Nickel
Metal Hydride Battery (JWB2)
(1) Ambient temperatures
<Available temperatures>
When in use on the wheelchair:
Temperature range between -25 to 50°C
When removed from wheelchair and stored:
Temperature range between -40 to 65°C
When charging:
Temperature range between 0 to 40°C
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.
<Recommended temperatures>
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
degradation, and its capacity will rapidly decrease.
• Using the wheelchair in excessively low temperatures will cause the battery ca-
pacity to rapidly decrease. For information on degradation, see "Battery's dete-
rioration characteristics" on the next page.
(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 ef-
fect occurs, in which the actual usable capacity
decreases.
The memory effect can be prevented and elimi-
nated by fully discharging the battery and then
recharging (refresh charging).
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