For devices that consume a lot of power, rechargeable batteries perform better than disposable batteries. It's a matter of power. Take the GP ReCyko, for example, with its 850 mAh capacity, a true high-performance battery. It is ideal for remote controls, PC mice, gaming consoles, smoke detectors, motion sensors, and LED lighting. This battery can be recharged up to 500 times, saving not only money but also being environmentally friendly. It comes pre-charged and is ready to use immediately after being taken out of the packaging. ReCyko batteries hold their charge longer, even when not used for a while. After a year, they still retain eighty percent or more of their capacity. Available in a 4-pack blister pack.