The CHILDTRAC System continually monitors the battery's charge level and will let you know when the battery needs re-charging.  In the Tracker setting in the portal, you can define a battery charge level percentage.  When the battery's charge falls below the defined percentage, you will receive a Low Battery Alert, either my email or SMS, reminding you to charge your tracker's battery so you and your child (can enjoy uninterrupted Freedom, Security, and Peace of Mind.