Nitecore UM4 battery charger for, amongst others, 18650 batteries

The Nitecore UM4 is an intelligent, universal battery charger with space for four batteries. This charger can charge not only Li-ion, Ni-MH, Ni-Cd and LiFeP04 batteries, but can also handle high-quality IMR batteries. Four batteries can be charged at the same time, with each charging cycle being independently controlled. Each slot has a charging capacity of 1500 mA. At this speed, a 3500 mAh battery can be charged to 80% full within two hours.