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iPhone 7 Battery maintenance
- Thread starter kevinbeared
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No, the battery itself. Operating temperature I believe is 32F, but once the battery itself starts dropping below 70F, capacity will degrade. It will return to normal once it reheats up, but exposure to too cold of temp for too long will permanently damage the battery.
Apple says it works best between 62-72F Ambient. So keeping the battery itself above 70F is ideal. A fridge is too cold. They are typically about 37-41F.
https://www.apple.com/batteries/maximizing-performance/
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There isn't an app for the phone then? A shame battery percentage removed that feature. Wonder if apple had a hand in that move. Don't see why, but they do lots of weird stuff. It should be included as a default ability in every phone. So helpful especially if your buying used.
Ok, now i see what you are saying, expose the most surface area for better cooling. I have laid it in front of a fan at times. I was literally thinking you meant a change in elevation, height from ground. My bad, LOL
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Is that like a prayer stand? New type of golden calf.
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Extreme heat destroys battery even when phone is off. Cold won't permanantly hurt the battery, just slow the chemical process while it is cold. With that said i wouldn't freeze it. But 40 F won't damage it at all.
I see imazing but it's nothing to do with battery, imazing 2 is AWOL apparently. I'm just curious about number of battery cycles and would like to look occasionally.
https://imazing.com/download
Yes it does. Look under device details. I would screenshot it, but there is too much personal info to post online.
Ok, was looking in the app store for the phone. This seems to go on a mac. I'll check it out and thanks for the tip.
No iOS app can report battery information accurately. Not on iOS 10 or newer.
There seems to be a lot of speculation in this thread!
I will add to it. I don't know for sure, but I thought the speed of charge and discharge is a bigger factor for battery health and both affect the temperature of the battery.
This is probably why apple prefers 5 W charging and doesn't do quick charging, both help to preserve battery life.
The more efficient processor in the 7 with its low-power cores will help a lot as it slows down power draw for light-use tasks. Basically if you can slow the rate of cycling the battery it will last longer.
So the best thing is probably, if you're using intensive battery draining apps like games to plug in where possible to minimise load on the battery, otherwise you shouldn't care too much about draining to 10% or 20% or to shutdown even. This is what I do for my laptop to minimise the rate of cycling the battery.
Nobody likes a flat phone so we don't tend to drain them to shut down very often but I like to do it every couple of months to help with battery calibration, if it doesn't happen through regular use anyway.
Usually it does so I don't have to bother trying to do it on purpose.
I will add to it. I don't know for sure, but I thought the speed of charge and discharge is a bigger factor for battery health and both affect the temperature of the battery.
This is probably why apple prefers 5 W charging and doesn't do quick charging, both help to preserve battery life.
The more efficient processor in the 7 with its low-power cores will help a lot as it slows down power draw for light-use tasks. Basically if you can slow the rate of cycling the battery it will last longer.
So the best thing is probably, if you're using intensive battery draining apps like games to plug in where possible to minimise load on the battery, otherwise you shouldn't care too much about draining to 10% or 20% or to shutdown even. This is what I do for my laptop to minimise the rate of cycling the battery.
Nobody likes a flat phone so we don't tend to drain them to shut down very often but I like to do it every couple of months to help with battery calibration, if it doesn't happen through regular use anyway.
Usually it does so I don't have to bother trying to do it on purpose.
The worst thing you can do is plug in while using intensive battery draining apps. This causes heat. Heat is the fattest way to permanently kill your battery.
There is no issue using a 10W or 12W charger with an iPhone, as the device is smart enough to only accept a certain charge rate. It may get a tad warmer than only using a 5W charger, but it will not harm the battery. The reason why Apple includes on a 5W charger is because its cheaper.
The biggest factor for lithium ion batteries is temperature, overcharging and letting it completely die. Overcharging does not mean keeping it plugged in all night, that is fine as the phone will stop charging and begin to discharge then recharge back up to 100. Constantly keep your phone between 90-100% is overcharging. Never letting the battery work will cause it to die.
Actually Li Ion likes faster charging, key is keeping the heat down. Check out Battery University for a fuller understanding of Li Ion batteries. The chemical reaction, dendrite production and particular proclivities are different from Nickle Metal Hydride, and Nickle Cadmium reactions.
As for calibration, it's not the battery calibrating, its the software calibrating to the voltage exibited by the battery. Also it's important to understand that what is discussed in Battery University is information about batteries in the lab. Apple has mitigated things like high and low volatages, charge rates and various other factors with the charging circuit in the phone.
For instance, it does not matter what power adapter tou use. The charge circuit inside the phone decides based on voltage of the battery gow much current it draws from the power adapter. The phone will never draw more power than what it needs and is safe. Using an ipad power adapter when phone is near high 90% charge state will only use a trickle charge such that at 100% you can leave the power adapter attached with NO ill effects.
Aflat phone is never near the theoretical low voltage nor is phone at 100% near the harmful high voltage that would harm Li Ion batteries. Apple has made charging the phone basically idiot owner proof. Just don't let it get hot, charging or not.
I never followed any battery advice on these forums (or google) and have always used my phone and charged it every night whether it's at 80% or 20%, it's always going on the charge so it's ready when I wake up.
That being said.. Never had issues with my battery on any iPhone. I generally upgrade every 2 years and my battery has always been as advertised.
That being said.. Never had issues with my battery on any iPhone. I generally upgrade every 2 years and my battery has always been as advertised.
Yes it does, I just downloaded it. Thanks.
My cycle count is 318. Design capacity is 2725. Full Charge capacity is 2400.
Is that bad or ok? I've noticed my battery seems to go down faster lately, than it use too. Phone was bought used, it's a 6s Plus 128gb.
I'd say that's within normal ranges and about 88% capacity left, but I've also seen better with far more cycles used.