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Charging Preferences iPhone/iWatch

C

chefwong

macrumors 6502
Original poster
Jan 17, 2008
466
30
Just added a Apple Watch to my stash. With the X off the charger, at night, it would normally lose about 2-3% overnight at most.

I had the Apple Watch on the charger overnight and unless it was the Bluetooth talking to the Apple Watch, the phone dropped down to 38% this morning from a fairly full charge of 97%+. Phone was not plugged in.

Anyhow, I suppose it's just due to BT talking to the Apple Watch ?
Maybe I need to keep the phone ~plugged~ in all night moving forward or just dump the watch in airplane mode @ night ?
 
That’s a big drop. Do you have Background App Refresh turned on for lots of apps on your Watch? Watch app on iPhone > General.
 
My wife and I recently (2 weeks ago+) added an Apple Watch 3 GPS to our collection. Neither of us have noticed any extra drop in battery life overnight from the phone. If your phone went from 97% to 38% it should reflect in the Battery area what took that battery life. Overnight I would be surprised to see more than 5% drop on my 8+.
 
Check your per-app battery usage on the iPhone.

Unfortunately the Apple Watch doesn't let you check battery usage per app, but if you have a watch app that is using a lot of battery on the iPhone, that could be the culprit. Also keep in mind that the first day or two you own an Apple Watch it will sync a lot of data from the iPhone and index it. You usually notice this having an impact on the watch battery more than the iPhone battery, but could affect both. After a couple of days things usually settle down.
 
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I went ahead and disabled background refresh for all the apps. All was on by default. @home, charged the phone back up to 100% and unplugged. 5 Hrs later with no phone usage, it went down 22% Went to look at battery usage, and Apple Mail/Watch was reporting 74% usage on battery.

Need to look into pros/cons of disabling notifications on this watch app settings.

I also have the cellular plan on it. Currently disabled it, and only have wifi/BT on by default
 
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My AW 3 LTE and iPhone X both sit on wireless chargers overnight, Makes things a lot easier to have a.full charge in the morning.
 
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I've never really looked into how much or how little battery wear is when it's kept plug in, aka, trickle charge, but more often than not, the X is charged to the brim before I call it a night, and just get's unplugged. Semantics aside, I presume the 2-4% discharge it does see overnight, is just as much as the trickle charge it may incur.
 
Turned off all Notifications and Background. Been observing , etc.
Maybe it's the BT connection ?

Last night, tried something different.
Put watch in power reserve mode (98% charged)
X with smartcover, 90+ charge, wireless, cell and BT enabled.
Both devices were not connected charging overnight

Woke up today to a dead drained battery.
Dunno....maybe some nefarious app was causing the issue ? Maybe it just wanted a reboot ?
Anyhow, it got a forced reboot per se with the drained batt.
 
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BigMcGuire said:
My wife and I recently (2 weeks ago+) added an Apple Watch 3 GPS to our collection. Neither of us have noticed any extra drop in battery life overnight from the phone. If your phone went from 97% to 38% it should reflect in the Battery area what took that battery life. Overnight I would be surprised to see more than 5% drop on my 8+.
Click to expand...

Seconding this. I observed no change at all in overnight battery change on my phone after I added an AW. I agree with Haruhiko, something's up.
 
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a bit off topic, Im just curious how is your iPhone and AW charging routine?

Personally i charge my watch 100% on weekends and everyday while i shower(15 mins) , and my phone always connected while im working.
 
I have a Nomad Pod and an extra cable sitting around if I need it. Basically, I wake up in the mornings, while showering I'll have my watch on the pod - usually gets my watch to 100% - I'll wake up with 92%+. During the day I'll walk quite a bit (10k+ with a 2-3 mile run) and end the day around 83-92% and put it on the pod till it hits 100% (really quick usually). So I charge it for maybe 15-30 mins at night, and 15 mins in the morning - usually popping it off right when it hits 100% so it doesn't get to TRUE 100%.
 
chefwong said:
Turned off all Notifications and Background. Been observing , etc.
Maybe it's the BT connection ?

Last night, tried something different.
Put watch in power reserve mode (98% charged)
X with smartcover, 90+ charge, wireless, cell and BT enabled.
Both devices were not connected charging overnight

Woke up today to a dead drained battery.
Dunno....maybe some nefarious app was causing the issue ? Maybe it just wanted a reboot ?
Anyhow, it got a forced reboot per se with the drained batt.
Click to expand...

I would try turning off BT to see if anything changes, but either way if you are having to go to this much trouble I would consider it being a problem with the phone or battery. :-(
 
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