Battery Watch Pro

A BMW among battery apps.

When it comes to the battery on your iPhone or iPad, these two things are always relevant:
• You never want the battery to die when in the middle of some activity (e.g. making a phone call) and/or somewhere where you cannot immediately recharge it.
• You want the battery to last as long as possible. It is well known fact that the battery loses its capacity over time. There are few easy actions you need to take in order to protect the health of your battery.

Battery Watch Pro calculates the remaining time until the battery is empty based on the past usage. Therefore the estimates are accurate for any iPhone or iPad and health of the battery.

Battery Watch Pro also provides recommendations to help you keep your battery healthy based on your usage of the device and temperature conditions outside.

KEY FEATURES
• Calculation of time to empty based on YOUR PAST USAGE
• Graph with battery levels in the past
• Extensive data correlating battery level drops with different types of activities (e.g. how much will the battery level drop if recording a video for 10 minutes)
• Notifications when the battery would be empty when the battery level drops to about 20%.
• Notifications to perform full charge cycles
• Calculation of time to full while charging based on YOUR PAST CHARGINGS
• Graph with the progress of charging (observe the fast charging and trickle charging periods)
• Sound alert when charging complete
• Overview of typical charging times for your iPhone or iPad 
• List of running processes (correlate battery level drops with the time when certain processes started)
• Battery level on the map - observe WHERE the battery level dropped the most
• Information about the local temperature and how it influences battery life and battery health
• Designed for both iPhone and iPad

TIPS:
• Use pinch gesture to zoom in/out in the battery level graph
• Charge your iPhone or iPad from 80% (or less) until the battery is full and the app will calculate the charging stats for your device.

Caveats:
• Battery level is displayed with 5% increments
• iPhone and iPad WiFi+3G collect battery level data as you move. iPod touch and WiFi-only iPad collect data only when the app is in the foreground.
• Continued use of GPS running in the background can dramatically decrease battery life.