Ventilogic LS / PLUS Internal BatteryVentilogic LS Care of the internal battery: Fully charge the battery before carrying out the following steps. Leave the device connected to the power supply for at least 15 hours. We recommend discharging the battery once a month by operating the device until the alarm Battery capacity critical appears (approx. 25 % capacity remaining). Then recharge the battery until full by operating the device from the power supply. This boosts the shelf life and
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