How to get battery level with 1

Question

How to get battery level with 1 % accuracy .

       [UIDevice currentDevice].batteryLevel

Will give battery level with accuracy of 5%. But

Answer 1

If you're jailbroken, you can simply use

int percent = [(SBUIController*)[objc_getClass("SBUIController") sharedInstance] displayBatteryCapacityAsPercentage];

This method is present on iOS 4.3+, and is probably what Battery Doctor is using.