6.8. Safety features
6.8.1. Mitigation of risks related to a fully discharged Lithium Ion battery
The Li‐ion battery used in this device has a risk of explosion and of material leakage when completely discharged. To
prevent this, the power control module (PCM) circuit is designed to fundamentally cut off the power before the
battery discharges fully. In addition, the battery level is continuously measured and displayed on the application.
Status of the device and recommended user action
An alert will appear on the associated tablet PC if the battery level is below 20 % and 10 %, and the battery level will
be shown in red.
When the battery level is below 20 %, the physical therapist is recommended to charge the battery within 5 minutes.
When the battery level is below 10 %, it is recommended that device operation be stopped immediately, and that
the device be charged before further use.
As a final warning, if the battery level is almost zero, then without further warning messages, the low battery
warning sound will be played from the device speaker, and device assistance will be stopped immediately.
SAIT‐IFU‐GEMS‐H Rev.1.1 (2019‐11)
Error message examples
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