The Golisi S2 Charger is the new generation of the O2 Charger. It features an all improved micro processor which enables this device to have an LCD screen that shows precise charging information, so you can clearly see details such as output current, charging state, charging time, & even battery type. This S2 charger is compatible with 20700, 21700, 26650, 18650 and most cylinder batteries to offer a wide variety of charging uses.

Having used a number of charging devices, we prefer this brand of battery charger, particularly as it quick and intuitive, but most importantly it uses a mains lead, rather than Micro USB, which we have tended to experience a less than acceptable level of failure.