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So my 5S battery is falling like a stone, it used to run for 7 days standby no problem on a full charge. It now drops 50% per day. The battery has been replaced, problem persists. Cannot use ‘Battery Info’ as mine is bugged and doesn’t show usage. Does anyone know a tool that can report what apps are using what battery power, or a fix for the issue that is “Battery Information will be available after using iPhone for a few minutes.” Restore is not an option.
Where have you purchased your replacement batteries. Sadly, there are still lots of poor quality batteries out there. Use a battery utility, such as coconutBattery (for Mac) or 3uTools (for Windows). Anything less than 70% of design capacity will require replacement. You can also use the Battery Health Diagnostic (Settings\Battery\Battery Health) in iOS 11.3 and above. It will tell you what the health of the battery is. If you have access to a USB Ammeter, you could use that to determine if the phone is really drawing current when it says it’s charging.
