The IQOS 3 Duo device is fitted with an ample 2900mAh battery which can provide enough power to use 2 Heets sticks in succession. This IQOS kit takes approximately 75 minutes to fully charge, and if you get your hands on their handy pocket charger, you can ensure you’ve always got juice to keep your nicotine cravings at bay anywhere, any time, even while on the go.