Suitable for charging all common cylindrical batteries: R6 AA, R03 AAA, R14C, R20D, 10440, 14500, 14650, 17500, 17670, 18350, 18500, 18650, 20700, 21700, 22650, 25500, 0, 26650, 32650, 33600 , 16340 R-CR123e Supports secure (unprotected) PCBs as well as unprotected cells - also Flat Top everActive C-4000 can handle any other cylindrical battery with a length of 32-71 mm and a maximum diameter of 33 mm. The everActive UC-4000 Charger is an advanced professional charger compatible with all common battery sizes, including AA, AAA, 14500, 16340, 18650, 20700, 21700 and others. It supports 3.6 - 3.7V Li-ion, protected and unprotected, LiFePO4 and Ni-MH batteries. It has independent charging channels for individual treatment of each battery. The advantages include a special measurement function, capacity test with capacity control, USB charging function and protection against overcharge, overdischarge, short circuit, reverse polarity and overheating. The UC-4000 charger is scalable, supports high capacity batteries and reactivates deeply discharged 0V batteries. everActive products are high quality and reliable. The delivery contents include a UC-4000 charger, a 1m power cable and an English user manual.