In case of an emergency, the battery backup for a sump pump takes over to prevent flooding. The battery is not to be used as a main sump pump. It is used to prevent immediate damage. Some have alarms to alert you of a problem and the battery backup starts automatically to avoid any water damage to your personal belongings or to your heating system or water heater. A battery backup keeps flood damage in check during inclement weather. Everyone should be prepared in case of a power failure. If you have a battery backup, make sure you check periodically to ensure the batteries are charged.
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