Changing Magic Mouse Batteries Once A Week

Question

I've been changing batteries for the magic mouse every week. The batteries cost 20 dollars for 2 pairs. Is this normal? I like the mouse but it seems more like a bill to me.

Answer 1

Barry Hemphill wrote:
Rechargeables do not last as long as Lithium batteries - voltage difference, I think.
The difference is because of the chemistry of the battery is different -- most rechargeable batteries use chemistries that can't store close to as much electrical energy (watt-hours) per unit of volume as conventional battery chemistries like alkaline or lithium. IOW, their energy density is lower.
But there is more to it than that. Different chemistries are designed for different discharge rates: some are designed to supply large amounts of their total energy at a time & some aren't. A battery designed to deliver a small amount of power for a long time (like a standard alkaline-manganese one) won't deliver as much total energy if used in an application that demands a lot of power than if used in one that doesn't.
Most rechargeable batteries do well delivering higher power, so even though they pack less energy into their cases, they may last longer in higher power applications. Since BT uses relatively large amounts of power when transmitting, you might actually get more life per charge out of a rechargeable than out of a standard alkaline battery if you use the mouse a lot.