How long is the recommended battery life of a optical mouse?

As optical mice are constantly ‘on’ (albeit in a slightly reduced power state), the light that’s emitted from the optical sensor will be a drain on batteries. To give an accurate timescale on how long the batteries will last within one of Cherry’s mice is so difficult, as this is all dependent upon usage. Generally, you would expect anything between 6 and 8 weeks per battery set (even high-power Duracell versions) -  but if it’s being used heavily during the day, then the life will be shortened. Optical and laser mice are a nightmare with battery life generally and it’s not only us that suffer with the problems. Logitech were claiming 3 weeks life expectancy at one stage with a set they supplied……. The best bet for any customer though is the Ergo Shark- although more expensive, the battery life is controlled because of the internal rechargeable batteries that are supplied in the mouse itself. Even then, (and I use the Ergo Shark mouse at home) I only get 3-4 weeks out of the batteries before they need recharging.

 Having said this with the Ergo Shark Mouse, when the batteries start to deplete in power, the red scroll wheel light comes on – and stays on for periods in excess of a week before completely giving up and have to be charged.

Battery life in both keyboards and mice is solely dependent upon usage though. There is no specific formula for battery life expectancy, other than to say if you’re a heavy computer user, they won’t last as long as with a more infrequent user.