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Over time, the lithium-ion batteries in smartphones can lose charge.

Battery health is how much of your battery's original charge it still has. In that case, customers may be also be advised to replace their battery if it's low on battery health. Let's have you reach out to us in a DM if this is still an issue after that time so we can help you look into this further.Īs the update was released last week, some users may be over the 48 hours wait that Apple recommends. It's normal for your apps and features to need to adjust up to 48 hours after an update. Thanks for reaching out! We'll be happy to help. With iOS 15.4, I have to recharge my ‌iPhone‌ at least three times a day."Īpple has responded to these complaints, saying in a tweet on its support account on Twitter that excessive battery drain may be normal up to 48 hours after an update."It's normal for your apps and features to need to adjust up to 48 hours after an update," Apple said in the tweet. That means the battery of my ‌iPhone‌ 8 is empty within a few hours. One user wrote "with the update to iOS 15.4, I experience a "massive" battery drain on my ‌iPhone‌ 8. Several posts on the forum reveal users are displeased with the battery life experience on iOS 15.4. "What's wrong with the iPhone battery after iOS 15.4 update?" one user tweeted to Apple Support, adding "It used to last 1.5 days with significant usage and now it’s less than 20 hours."įrustrated customers have also taken to the Apple Support forums, an online community where users share issues and find solutions from the Apple Support community. Users have taken to Twitter to voice their poor battery life experience on iOS 15.4, tagging the Apple Support account in hopes of finding a solution. I don't know a single person that would describe hitting the accelerator to the floor as normal driving.ĭifference only shows in measurements of max available power when such spirited driving is called for.Users are reporting excessive battery drain after updating to Apple's latest iOS 15.4 update, claiming that their iPhones are no longer lasting as long as they used to before downloading and installing the newest iOS version. So, the correct answer to the topic in question is: No, under normal driving the car does not feel slower. max power is only released when the car is moving with a speed in right speed window duration when car releases maximum power is very short change in max power is in all cases less then 12% Yes, it contains a lot of blank space but that blank space allows one to correctly interpret the data.ĭrop in max power is insignificant because of theese factors: Proper chart with same data that correctly plots the relationships is shown below. It portrays the P85 max power at low SOC only at ~1/6 of the power at high SOC. State of Chart chart posted above belongs in the BS category because Y axis starts with 310 kW and thus visually exaggerates the differences.