Characteristics And Handling Of The Lithium Ion Battery (Esb1) - Yamaha JWX-1 Owner's Manual

9.3. Characteristics and Handling of the Lithium Ion
Battery (ESB1)
(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:
Temperature range between 0 to 35°C (32 to 95 °F)
When removed from wheelchair and stored:
Temperature range between 10 to 25°C (50 to 77 °F)
When charging:
Temperature range between 10 to 25°C (50 to 77 °F)
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• 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 temper-
atures will cause the battery deterioration to
speed up and its capacity to rapidly decrease.
For information on degradation, see "Battery's
deterioration characteristics" on the next page.
While traveling, if the internal temperature of the lithium ion battery
TIP
becomes too high or too low, a buzzer will notify you.
• When using a lithium ion battery, a buzzer will beep (continuous Pi Pi Pi
Pi) if the battery's internal temperature drops to 0°C (32°F)or below, or
rises to 45°C (113 °F) or above for 5 seconds.
• When the buzzer beeps, promptly return to the environment within the
recommended range of operational temperatures, and use the battery
there.
• When descending down a slope on the wheelchair, the drive motor, con-
trary to normal operation, generates electricity and charges the battery.
Charging a lithium ion battery when its temperature is 0°C (32 °F) or be-
low/45°C (113 °F) or above causes its deterioration to progress extremely
rapidly. For this reason, when you are descending down a slope in such
temperatures, the wheelchair may stop moving to protect the battery.
When this happens, you will hear 5 long beeps before the wheelchair
stops, and then another long beep 10 seconds later as the wheelchair
stops.
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