Basement Watchdog AGM Sump Pump Battery vs Mighty Max Battery 12V 75AH GEL Battery Replacement for Wayne WSS30V Backup Sump Pump

Buy the Basement Watchdog if your backup system is a Basement Watchdog controller, especially a Special+ or Big Dog+ panel. It is the battery the charger was designed for, and the 75 Ah AGM matches the listed runtimes. The Mighty Max is a general-purpose 75 Ah GEL deep cycle that fits many 12 V backup pumps, including Wayne WSS30V, and can be mounted in any position. Both are sealed and maintenance free; the Watchdog is the safer fit for its own brand, the Mighty Max the more flexible one elsewhere.

• Choose the Basement Watchdog if you own a Basement Watchdog backup system and want the battery its charger and controller are built around.
• Choose the Mighty Max if you need a 75 Ah sealed deep cycle for a Wayne WSS30V or another 12 V backup pump, or want to mount it on its side.