When an iPhone 15 Pro battery is independently replaced with another genuine battery from the same iPhone model, the option to view the new battery health measurements disappears. Just checked the diagnosis and saw it's efficiency has fallen down to 83%. Yes, I know it is normal for a battery to lose efficiency, I am already following the best practices for battery saving and extending battery life. My lap used to give me around 4 hours 100% to 5% with lowest brightness setting, normal browsing using dongle. That is amazing, my old SE also was a beast at battery life. Actually at 83% with SE and it’s on my plan to change the battery to give back autonomy ! I get around 3.5 hours of screen on time with my current battery health. I’m at 83% and I think that iOS 13 (13.4.1) has wrecked everything. Luckily, in the last few versions of iOS, Apple has included a battery health monitor in the settings. Tap the settings icon and scroll down to Battery. On this page, you'll be able to get a good idea of what's using your battery and when. If you see an app using more than expected, that app may be your problem rather than a degraded battery. 3 days ago · On the left pane, under General, select Battery Information. Verify the battery health information as illustrated (Figure 1). Figure 1: Screenshot of battery health status in the BIOS. Method 2. Power on the computer and tap F2 key at the Dell logo screen. Select the Advanced tab. Verify the battery health information as illustrated (Figure 2). An iPhone battery is rated for ~500 charge cycles. If every day you go to bed with 50% battery that means you would go through ~550 charge cycles in 3 years. That clearly shows that 99% is not a correct battery health percentage. It just went down to 92%. Also, if your iPhone’s battery is at 86% it only means you’re a heavy user of the phone. Manufacturer’s only give estimates of “normal” usage which means that a person lightly uses the product. Your battery health percentage is normal. Pretty normal % for a year old model. You’ll be ok, 93% battery health is pretty good after a year Battery Health on the iPhone 11 My phone is about 9 months old and the battery health has dropped to 83% in this period. I would like to know if I can get the battery replaced for free if I take it to the Apple service center as the phone is under warranty period. zCSycF.