This USB charger has an extremely compact and very light design. Simply connect the magnetic ends of the charger to the pole ends. An automatic battery pole detection ensures the correct connection for charging. It charges most types of Li-Ion batteries. With the battery charged, the charger can also be used as a power bank. The features: charging and discharging function, USB 2.0 input and output ports, white light sensors for 3 brightness levels as well as power indicators, 3 LEDs indicate the charge / discharge status, overcharge and reverse polarity protection. - very light - charge indicator - can also be used as a power bank (with charged battery) - reverse polarity protection 24,5 x 24,5 x 12,5 cm, 28 g Input DC 5V, = 0.5A Output 4.2V ± 1%, (battery), 5V ± 5% (USB) 1A max. Suitable for the following battery types Li-Ion/IMR: 12650, 13450, 13500, 13650, 14350, 14430, 14500, 14650, 16500, 16340(RCR123), 16650, 17350, 17500, 17650, 17670, 17700, 18350, 18490, 18500, 18650, 18700, 20700, 21700, 22500, 22650, 22700, 25500, 26500, 26650, 26700
