DC to AC Power Inverters with built in battery chargers and automatic transfer switches can be used to back a home sump pump to avoid water damage during a power loss. If power is lost then well can flood and cause major water damage to your home. By connecting a inverter charger into your ac power supply you can protect yourself from this. THis type of DC to AC power inverter will auto detect power losses and switch over to direct current battery power during outages. When power is restored the built in charger will then begin charging the batteries and you will be protected during your next outage. This type of power inverter can be used in all application that require a constant power source.