This is a Nitecore D2 universal smart charger for batteries of various kinds. The compatible battery types are Li-ion, NiMh, NiCd, Li-ion polymer, and Lead-acid, making this a highly versatile charger. Indeed, it also accepts many sizes of batteries: C, AA, AAA, AAAA, 22650, 16340, 17670, 18650, 18490, 18350, 26650, 14500, 17500, 10440, and 14350. The weight of the unit without batteries and the power cord is 168g, and no batteries are included.