Three Charging WayFor LP-E17 battery charger built with a double-sided plug USB cable (34.5 cm length) and Type-C port input Power your camera batteries with good charging efficiency.USB port output could as a power bank to charge your phones in an emergency Multi-Function Battery Charger CaseFour-in-one charger is NP-FW50 battery charger, (1) could be used as a camera storage case to store 2 batteries, (2) and is 2 SD card storage cases. (3)have a phone power bank function. (4)Can be used as a card reader to read camera memory card information. COMPATIBILITY for Canon EOS RP R10, Rebel T6i, T7i, T8i, T6s, SL2, SL3, EOS M3, M5, M6, 200D, 77D, 750D, 760D, 800D, 8000D, KISS X8i, Digital SLR Camera Switch button for LP-E17 chargerThe switch button has 2 functions, (you need to press the switch once for the output function; when it is used as a storage box, you need to press the button to turn off the power