The battery life on my 2 week old iPhone 8 Plus just continues to amaze me! It’s the best thing about the phone! Before I went to bed last night, I checked the battery stats for the day...I used the phone for 7 hours and 49 minutes and the phone was at 39 percent! I could have gotten probably another 2 hours of usage out of it! My old iPhone 6 in comparison would always need charged after 6 to 7 hours of usage. Wow! How’s your battery life on the iPhone 8 Plus?
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iPhone 8/Plus Battery life...
- Thread starter GomerBoy
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Apple has to be throttling your phone to get that battery life! 
The eight plus performance is phenomenal, but when the iPhoneX plus hits the market, I'm outta here!
The eight plus performance is phenomenal, but when the iPhoneX plus hits the market, I'm outta here!
Sometimes I do cheat a little. If I not going to be using my phone for anything demanding, I will sometimes put it in low power mode for a while. To be honest, I don't notice a performance difference, but when I do this, I can get just shy of 3 whole days on a single charge.
I know that many people only care about their phone lasting to the end of the day, but the more battery cycles you use the faster the battery degrades.
I know that many people only care about their phone lasting to the end of the day, but the more battery cycles you use the faster the battery degrades.
Indeed, so all of my devices are plugged into power whenever external juice is available.
I'v got an 8 plus that replaced my galaxy s8+. I've had it for 3 weeks now, and I'm seriously impressed.
The thing that confuses me is the fact the iPhones ALWAYS get their asses kicked in battery drain tests on YouTube. It doesn't matter which one, the iPhones ALWAYS lose and lose badly.
My s8+ is gone now, but I swear I'm getting better battery life from my 8 plus. Standby more than makes up for usage.
1h on s8+ Reddit is about 6.5-7%. That's better than my 8 plus, but factoring in standby drain throughout the day, I'm routinely going to bed with more charge left.
I have noticed something odd, though. When you unplug your phone at 100%, you can seriously use it for 20-30 minutes before it drops to 99%. That's not realistic considering when it's down to 70%, you can't go 20-30 minutes before it hits 69%. I've read that the closer you get to 0 the faster iPhones drain. I haven' been able to prove it.
All in all, I'm thrilled with the phone and very surprised why it does so terribly on battery drain tests when it kicks ass in real world usage. I just wish I knew how many cycles the battery is rated for.
The thing that confuses me is the fact the iPhones ALWAYS get their asses kicked in battery drain tests on YouTube. It doesn't matter which one, the iPhones ALWAYS lose and lose badly.
My s8+ is gone now, but I swear I'm getting better battery life from my 8 plus. Standby more than makes up for usage.
1h on s8+ Reddit is about 6.5-7%. That's better than my 8 plus, but factoring in standby drain throughout the day, I'm routinely going to bed with more charge left.
I have noticed something odd, though. When you unplug your phone at 100%, you can seriously use it for 20-30 minutes before it drops to 99%. That's not realistic considering when it's down to 70%, you can't go 20-30 minutes before it hits 69%. I've read that the closer you get to 0 the faster iPhones drain. I haven' been able to prove it.
All in all, I'm thrilled with the phone and very surprised why it does so terribly on battery drain tests when it kicks ass in real world usage. I just wish I knew how many cycles the battery is rated for.
Not necessarily right down to 0%, but yes, from 100 to below 20 is approximately a full cycle. Partial cycles accumulate as well. So if you discharge down to 50% and fully recharge, and you do that twice, that's 1 cycle.
It's considered when you use up 100. Meaning if you go from 100 to 50, then charge up to 90 and go down to 40, that's a cycle.
Jeez how is yours that good? You are over 7 hours usage and not even half way drained yet!
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It’s a phone though so you’re going to always use up cycles every day. It’s not like a laptop where you can keep it plugged in all the time. A phone is meant to be unplugged and carried on the go with you! I charge my 8 Plus every night...is this ok to do? Just want to get the most out of my battery.
Not really sure what that changes or really has to do with my reply that simply commented on what a cycle is.
Any tips to prevent unnecessary battery degradation over time?
For example, is it better to charge it to full each time or it doesn't matter?
Is it better to use up the battery each time before charging or it doesn't matter?
Is it better to charge the phone as often as possible or it doesn't matter?
For example, is it better to charge it to full each time or it doesn't matter?
Is it better to use up the battery each time before charging or it doesn't matter?
Is it better to charge the phone as often as possible or it doesn't matter?
Regarding the definition of a "cycle" on the batteries of iPhones, and Apple Watches, there's an article on Batteryuniversity.com, that defines this quite well.
I'll quote the important part:
Look what I found on Batteryuniversity.com: Similar to a mechanical device that wears out faster with heavy use, the depth of discharge (DoD) determines the cycle count of thebattery. The smaller the discharge (low DoD), the longer thebattery will last. If at all possible, avoid full discharges and charge the battery more often between uses. Partial discharge on Li-ion is fine. There is no memory and the battery does not need periodic full discharge cycles to prolong life.
So, 1000 1/2 cycles, (Charge at 50%) would be only a lifetime cycle count of 500. Also, never drain the battery (LiIon) below about 25%, it does affect the life of the battery.
I'll quote the important part:
Look what I found on Batteryuniversity.com: Similar to a mechanical device that wears out faster with heavy use, the depth of discharge (DoD) determines the cycle count of thebattery. The smaller the discharge (low DoD), the longer thebattery will last. If at all possible, avoid full discharges and charge the battery more often between uses. Partial discharge on Li-ion is fine. There is no memory and the battery does not need periodic full discharge cycles to prolong life.
So, 1000 1/2 cycles, (Charge at 50%) would be only a lifetime cycle count of 500. Also, never drain the battery (LiIon) below about 25%, it does affect the life of the battery.
I’m a bit of a battery nerd/ocd
Smaller and more frequent charges are best
A battery is in its ideal zone from 50-80%
It’s better to charge to 100% than to let the battery get below 20%
20-80% is a good range to keep it at if possible, since it eliminates both extremes (over 80% and under 20%)
Heat is the number one killer of batteries
Topping your battery is much better than deep discharges
There is no memory, so no need to worry. I’ve also read iPhone batteries can not be calibrated
Wireless chargers and fast chargers produce more heat than the oem charger the phone came with
People will say to just use the phone and not to worry. This is a good strategy if you can do it. I personally have battery anxiety so I always try to keep it healthy. A new batter is around $80, but the default one should last over 2 years for many people.
Ok thanks for the information! To clarify...it is ok to keep the phone on the charger every night and start with fresh 100 percent every morning? And always charge phone when it reaches 50 percent if possible?
So far I'm on 8 hours 9 minutes usage and 33 hours 26 minutes standby...and I still have 32% battery left.
Pretty much yes! There was only a couple hours today I was on LTE, but I wasn’t using my phone much. I know I should have better battery life on Wifi than LTE correct?
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I have the 7 Plus (which is great) and was thinking of getting the 8 Plus. Is it really a noticeable upgrade though? I don't care about the wireless charging, but if it does give much better battery life (in real world use) I'd be interested in the upgrade.