Yeah, another battery question (sorry)

[Dormammu]

Not really a question but more an observation.
I notice my watch battery charge goes down quicker in the first 20-25% or so, then slows down a little bit.
For instance I'll put the watch on @6AM, and by 8:30AM (No use other than looking at the time, no complications) I am at 91%. Almost a 10% drop from 2.5hrs doing nothing.

Anyone else notice this?

 

[flur]

How long have you had your watch?

 

[Dormammu]

I've been wearing it for four days now. Haven't had the battery bottom out yet though.

 

[Knightcastle]

Not really a question but more an observation.
I notice my watch battery charge goes down quicker in the first 20-25% or so, then slows down a little bit.
For instance I'll put the watch on @6AM, and by 8:30AM (No use other than looking at the time, no complications) I am at 91%. Almost a 10% drop from 2.5hrs doing nothing.

Anyone else notice this?

"No use other than looking at the time"

... and constantly checking the battery, by the sounds of things.

 

[Dormammu]

"No use other than looking at the time"

... and constantly checking the battery, by the sounds of things.

I think I know how much I actively look at my watch. I literally put the watch on at 6 and checked the battery @8:30. I am quite busy at work between that time so I don't even look at my watch. Needless to say I was NOT checking my battery life constantly.

 

[Joe1602]

At that rate, the battery would last 28 hours. So that sounds about right to me.

 

[mikezmac]

Lithium batteries don't discharge in a intuitive fashion. The first 20% tends to seem to drop fast. 80% to 30/40% goes slower. Then it tends to seem to drop fast and then the last 10% slows a little.

In short stop staring at the %

Use the usage feature to see where your power goes, kill the background refresh items you don't need and uninstall watch apps you don't want or need and you shouldn't run out of power (unless you use it non stop. )

 

[mrboba1]

Not really a question but more an observation.
I notice my watch battery charge goes down quicker in the first 20-25% or so, then slows down a little bit.
For instance I'll put the watch on @6AM, and by 8:30AM (No use other than looking at the time, no complications) I am at 91%. Almost a 10% drop from 2.5hrs doing nothing.

Anyone else notice this?

5% an hour gets you 20 hours of battery.

I generally see 3-4% /hour when I lightly use it. You're right on track.

 

[simonx314]

...Haven't had the battery bottom out yet though.

The battery gauge will be more accurate if you calibrate it by allowing the battery to fully discharge. That way the software that estimates battery percentage will have a recent data point as to the minimum battery voltage.

 

[Dormammu]

The battery gauge will be more accurate if you calibrate it by allowing the battery to fully discharge. That way the software that estimates battery percentage will have a recent data point as to the minimum battery voltage.

Yeah, maybe this weekend I'll try and drop it to 0%

 

[FuzzyLogic13]

The battery gauge will be more accurate if you calibrate it by allowing the battery to fully discharge. That way the software that estimates battery percentage will have a recent data point as to the minimum battery voltage.

I'd like to know where this information is documented, please. A reference, if you don't mind?

 

[simonx314]

I'd like to know where this information is documented, please. A reference, if you don't mind?

http://batteryuniversity.com/learn/article/battery_calibration

"A “smart” battery should be self-calibrating by taking advantage of occasional full discharges and recharges, but in real life this does not always happen....To correct the tracking error that occurs, a “smart battery” should periodically be calibrated. Calibration occurs by running the battery down in the equipment until “Low Battery” appears. This sets the discharge flag and the subsequent recharge establishes the charge flag. The distances between the flags enable state-of-charge (SoC) estimations for a time....a calibration should be done once every three months or after 40 partial cycles."

 

[FuzzyLogic13]

http://batteryuniversity.com/learn/article/battery_calibration

"A “smart” battery should be self-calibrating by taking advantage of occasional full discharges and recharges, but in real life this does not always happen....To correct the tracking error that occurs, a “smart battery” should periodically be calibrated. Calibration occurs by running the battery down in the equipment until “Low Battery” appears. This sets the discharge flag and the subsequent recharge establishes the charge flag. The distances between the flags enable state-of-charge (SoC) estimations for a time....a calibration should be done once every three months or after 40 partial cycles."

Interesting. Thank you for finding that.