Kettler Quadriga - Waking the Battery

Operation
877-00136_1.0_17.09.2018
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7.4.3 Waking the battery
 When not used for a longer period, the battery
switches to sleep mode for self-protection. The LEDs
of the operating and charge status indicator do not
light up.
 Press the On-Off button (battery).
 The battery's operating and charge status indicator
indicates the charge status.