Apple Battery Charger

View all Questions

Back To Product

Follow this Question

What is the starting battery life percentage with a Magic Mouse? Apple BT Keyboard?

I have 2200 Energizer batteries (that were charged by a pure garbage 15-min Energizer recharger) in my Magic Mouse. When fully charged and cooled down 3 hrs later, the percentage starts from approx. 72%, not 100%. Do Apple's batteries start out at less than 100%? One reviewer mentioned the BT keyboard started at 81%.

Answer

2 Answers from the Community

  • Best Answer

    I have a Mighty Mouse (not a Magic Mouse). Even with fully-charged NiMH batteries, the charge percentage never shows more than about 70-75%. Same with the wireless keyboard.

    The battery charge display is calibrated for alkaline batteries, not NiMH. Alkaline batteries start at 1.5V and the voltage drops relatively quickly as they discharge. NiMH batteries start at 1.2V, and the voltage stays pretty constant until they are nearly discharged. Software that's calibrated to show the remaining charge in an alkaline battery won't show the charge accurately for NiMH batteries. Any brand of battery will behave this way. It doesn't indicate a problem with the batteries; they are just different than alkaline.

    Maybe Apple will update the software so it can show the charge more accurately for NiMH batteries.

    Was this useful?

    13 of 13 people found this useful

  • don't worry about number's you see...run to real exhaustion

    then you will see what is reality not just number's

    Was this useful?

    1 of 5 people found this useful

Related Questions