Ultralast Green Everyday Precharged Rechargeable Battery is ready-to-use convenience for immediate use after purchase. Keeps charge up to 6 months in devices such as remote controls, clocks, flashlights and other common household applications. It holds 80 percent of charge after 12 months when not in use and replaces disposables in every application without sacrificing performance. This battery is rechargeable in any NiMH charger for proper use and ideal for household devices. This battery comes in packs of 4.