BatteryTimer for the PocketPC allows you to simulate patterns of usage, and automatically log the remaining percentage battery charge in main and supplemental batteries.
For example if you use your PocketPC for playing audio files for 2 hours a day you can set it to play a track in a continuous loop, then start BatteryTimer to 'on for 2 hours off for 24 hours'. After 2 hours it will shutdown the PocketPC with an instruction to wake up again in 24 hours. This process will repeat, logging data at an interval you specify until the battery charge reaches critical level, at which point the program stops and puts the PocketPC into shutdown mode.
If you're planning a project involving mobile data collection one of the first things you'll need to establish is how long the mobile device's batteries will last, and whether this fits with expected usage patterns, and opportunities for recharging.
It is well known that PocketPC batteries become tired after many charge/discharge cycles, but without BatteryTimer it is difficult to measure how bad the situation has become.
With BatteryTimer you can fully charge your PocketPC then leave BatteryTimer running in 'Always on' mode and it will automatically log when the battery reaches critical level and then switch off.