IQOS 3 DUO It takes approximately 120 minutes to fully charge the IQOS 3 DUO Pocket Charger from an electrical outlet. Only charge IQOS 3 DUO device using IQOS AC Power Adaptor and USB cable. IQOS 3 Multi It takes approximately 75 minutes to fully charge the IQOS 3 Multi from an electrical outlet. Only charge IQOS 3 Multi device using supplied AC Power Adaptor and USB cable.