You can charge the IQOS 3 Pocket Charger with or without IQOS 3 Holder inserted. The IQOS 3 Pocket Charger does not require a full charge to work, however we recommend to fully charge the IQOS 3 Pocket Charger before the first usage. It takes approximately 120 minutes to fully charge the IQOS 3 Only charge your IQOS 3 device using the supplied AC Power Adaptor and USB cable.