The battery recalibration tool in iOS 14.5 will update the battery health reporting system of your iPhone 11, iPhone 11 Pro, and iPhone 11 Pro Max to recalibrate its maximum battery capacity and peak performance capability. Based on some rudimentary math, a degradation of 1 percent of battery capacity per month may be normal. That’s if you frequently use, deplete and charge your smartphone. But, again, so much of this is variable that it’s hard to give a concrete number. Your mileage may vary drastically. Tested for battery health and guaranteed to have a minimum battery capacity of 80%. Frequently bought together This item: Apple iPhone 11 Pro Max, 64GB, Space Gray - Unlocked (Renewed) The A16 is also plenty efficient and will get you great battery life on the iPhone 14 Pro and 14 Pro Max. Drop the Always-on display, and you’ll get extra energy savings. iPhone 15 Pro Max size qxJFC.