XTAR VX4 - Analysis charger for 1.5 V, 3.6 - 3.7 V Li-Ion, 3.2 V LiFePO4 and 1.2 V NiMH batteries The popularity of 1.5 V lithium-ion batteries is increasing, but many users want detailed information about the capacity and performance of their batteries. Conventional chargers rarely offer this analysis function. The XTAR VX4 Visible Mixer closes this gap with a versatile, precise charger that also enables capacity testing. Technical highlights: