It is similar to waking up with an alarm clock sound instead of waking up every hour and watching at the clock.

BatteryZzz is a small but very convenient battery control utility which works like an audible battery indicator. It warns you with a sound signal about discharge and full charge of the battery on your Windows Mobile phone or Pocket PC device. Unlike other Windows Mobile battery indicators or meters, BatteryZzz is the first application that plays a low battery warning sound which easily attracts attention. So with this battery software, unlike the standard warning message, you will never miss the moment of your battery critical discharge.