LONG-LASTING POWER:This pack of 4 AAA-type batteries with low self-discharge is pre-charged and ready to use for your convenience with a 550mAh capacity. It provides long-lasting power to your everyday devices at up to 1000 charges. The batteries have a durable shelf life when unused until they are required. These rechargeable batteries are ideal for high-power devices, including TV & AV remotes, wireless keyboards & mouse, doorbells and clocks—note - Charging devices are sold separately.RECHARGEABLE:The rechargeable hybrid technology (nickel-metal hydride) produces less waste than standard disposable alkaline batteries and is more affordable overall. Save money and reduce waste with Accu Ready batteries.PACK OF 4:This pack consists of 4 x AAA Size NiMH rechargeable batteries. The batteries contain 0% of harmful metals, cadmium and mercury. Each battery casing prevents leakage to protect your family devices.SAVE MONEY:These NiMH Rechargeable Accu Ready Batteries can be recharged many times, saving you money and reducing waste They are an economical replacement for disposable alkaline batteries. They retain 75% charge for up to one year in storage.OTHER USES:Use with trackball, Apple mouse keyboard & trackpad, garage door remote controller, flashlight, kids toy, electronic pets, radio controlled car kids, alarm burglar sensors & system, alarm clock, remote control, flash gun, flashgun, Glade auto spray air freshener, Airwick air freshener, diffuser, thermometer, torch, mini sewing machine, travel electric razor, shaver, eyebrow nose & facial trimmer, handheld fan.