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9. Lithium Ion Battery and Charger
9.1. Features of the Lithium Ion Battery (ESB1)
• Has a higher energy capacity compared to the nickel metal hydride battery.
• Equipped with Battery Management Control System (BMC). (built-in microprocessor) This is
a system that uses a computer to track charge/discharge status, operating conditions, and
temperature.
• Even with repeated shallow discharge/charge cycles, it is difficult for the memory effect to
occur. Therefore, refresh charging is not necessary, and its charges can be replenished
additively.
• Battery does not contain mercury or cadmium.
• Compact but high capacity. (Capacity: 25 V × 11.8 Ah)
9.2. How to Use the Lithium Ion Battery (ESB1)
(1) Attaching and removing the battery to and from the wheelchair
For instructions on attaching and removing the lithium ion battery to and from the wheel-
chair, see “3. Before Sitting in the Wheelchair” and “5. After You are Finished Riding the
Wheelchair”.
(2) Checking the residual capacity of the battery
Press the indicator switch to display the battery’s residual capacity.
Battery
Indicator switch
80 – 100%
60 – 80%
40 – 60%
20 – 40%
10 – 20%
0 – 10%
Light or flash to
indicate the battery’s
residual capacity.
Off
On
Flashing
