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dontlan

macrumors regular
Original poster
Jan 9, 2024
124
10
I charge my magic mouse and magic keyboard (last 3 version 2023) using the original 20 watt power adapter from Apple and the original braided cable that came with them.

I have 4 questions that may seem silly, for which I apologize in advance, but I'm really curious to know.

1) Is it dangerous for my devices? I mean, the 20 watt adapter might be too powerful, causing accelerated battery failure in my devices.

2) Is there any difference between original and regular cable/adapter? Sometimes I am too lazy to look for the original charger and I charge my devices with a regular samsung smartphone charger.

3) Do I need to charge my devices to 80% to extend the battery life like in iPhone? If not, is it ok to leave them on the charger even if they are 100% charged? Sometimes I go to bed and put them on charge, won't that ruin their battery?

4) What is the average lifespan of a magic mouse? From my observations, it always drains the battery faster than the magic keyboard, about 3 times faster. I've been using them for a year at this point, 100% charge lasts about 2 weeks for the magic mouse and 3-4 for the magic keyboard, but I use them all the time.
 
1. The charger and keyboard will negotiate the proper voltage and current for charging. The keyboard won’t pull more current than its designed to handle.

2. No. Any MFI certified lightning cable will behave the same as the original from Apple.

3. You could if you want, but that is a lot of micromanaging. Given the time between charges, it’s going to take a long time to reach a high enough cycle count to really begin impacting capacity.

If you leave it on the charger overnight or for a few days now and then, it’s nothing to worry about. I just wouldn’t recommend running it wired all day every day. You need to exercise the battery once in a while.

4. I don’t use the Magic Mouse, but I do use the Magic Trackpad. My experience is similar to yours and seems reasonable. It’s takes more energy to monitor for and respond to complex gestures or movement than it does to wait for a switch to be depressed. They may also have different sized batteries. I’ve never looked up the battery specs to see.
 
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