Also, lithium-ion batteries (the ones found in almost all smartphones) degrade a bit with each charge cycle. Real-world use always reduces total capacity over time, but a healthy battery will only have a small percentage of its original capacity. The second is the total number of charge cycles the battery has been through. The first is the maximum remaining capacity (the total charge the battery can hold). Compounding the problem is that most mobile phones do not have a user-accessible battery that can be swapped out for a fresh, new one.įortunately, there are two great metrics you can check to get an overview of your battery health. If you’ve ever had to constantly recharge your old phone because the battery would only last a couple of hours, then you know how annoying it is. After a year, the battery life will not be as long as when the phone was new and will continue to degrade over the years. Battery life determines how long your battery lasts on a single charge, but battery health determines how much battery life decreases over time. The state of the battery is different from that of the battery. However, neither of these tools tells you anything about the long-term health of your battery, which is just as important. IOS includes several useful tools to show how much battery life your iPhone has left, as well as which apps are consuming the most of your battery. How to check the battery status of your iPhone