The Core SWX 2x NP-50 NP-Style Batteries & Two-Position Charger Kit from B&H combines two 13.2V, 50Wh, NiMH batteries with a two-battery, 90-240V desktop charger.
The batteries each feature a 4-stage power gauge readout. The charger can simultaneously charge two batteries and provide AC power to 12V equipment. It supports NiMH, lithium-ion, and NiCD batteries at the same time.