2S 5A 8.4V 18650 Lithium Battery Charger Board Protection Module have main IC using original “precision” imported components. With overcharge, over discharge, over current, short circuit protection function, for a variety of different shapes of 3.7V capacity lithium batteries. Using the Japanese precision protection IC, VISHAY, AOS, IR and other high-quality MOSFET, an FR-4 low-temperature coefficient of the plate, well-designed, comprehensive test. Compact size, suitable for many requirements of high integration, low-cost occasions, can meet the performance requirements of many aspects, to ensure the absolute safety of the battery group.