Both are smaller than the batteries in last year's iPhone 11 Pro and Pro Max, which had batteries that were 3046mAh and 3969mAh, respectively. Meanwhile, TENAA says that the iPhone 12 mini battery comes in at 2227mAh, confirming a recent leak. The agency also says that the iPhone 12 battery is 2851mAh but that's likely a typo that's meant to be Power your iPhone 12, iPhone 12 mini, iPhone 12 Pro, or iPhone 12 Pro Max down, wait a minute, and power it back on. If it’s still draining quickly, move on to these other steps. Update Your iPhone The iPhone 13 Pro Max battery lasts a very, very long time. Screen-on time can clear 10 hours. That’s a definite improvement over last year’s iPhone 12 Mini, but it nevertheless still May 12, 2021 8:36 AM in response to aravind198. 88% is very good for a 5 year old phone. Batteries are consumables; they lose a little capacity every time they are discharged, then recharged. On average this works out to about a 1% loss for every 25 “full charge cycles”. As one example, if you charge the phone overnight, every night (and The newly-launched MagSafe Battery Pack for the iPhone 12 mini, iPhone 12, iPhone 12 Pro, and iPhone 12 Pro Max is now available for in-store pickup at Apple Stores in a range of countries and Some, like CNET's iPhone reviewer Patrick Holland, still have 100% max capacity on his iPhone 14 Pro Max nearly 11 months later. My own iPhone 14 Pro Max, meanwhile, shows a battery max capacity OnePlus 8 Pro (Max Auto) 0: 888: Battery life. The Apple iPhone 12 packs a 2,815mAh battery - that's about 10% smaller capacity than the unit inside the iPhone 11. Still, Apple promises the tICZDLW.