Does battery life % display in 1-unit increments?

I've recently been getting a low battery warning on my BT keyboard, and the drop-down menu shows "15%" remaining. Since the batteries are lithiums, I'd like to more or less run them out. At the same time, I do some gaming and a dead keyboard at the wrong time would be annoying. Is the percentage readout incremental by some unit? I recall there being a bar for this keyboard at one time that had only 5 "gauges," which meant the readout was only good every 20%, so I wonder if the keyboard just shows something similar. I know it won't be very precise, but I'd much rather replace the batteries at, say, 5% then 15%, especially since that 10% would mean several more weeks.

I believe my bluetooth magic mouse was reporting 19% battery life remaining last weekend. Since 19 is a prime, and I have seen values of 82, 57, 26, 8, and 6 I would guess that the value is a good approximation at that time. Keep in mind that is also probably based on a (mostly) linear discharge rate for alkaline batteries, and if you are using something else, the estimation might not be as accurate.

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    Solved!
    Go to Solution.

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