Mighty Max ML9-12GEL 12V 9AH GEL F2 Replacement Battery for CyberPower RB1290 UPS - 8 Pack

The Mighty Max ML9-12GEL is a sealed, maintenance-free 12V 9AH rechargeable GEL battery with F2 terminals, offered here as an 8-pack. It is a direct replacement compatible with the CyberPower RB1290 UPS. Its gel electrolyte is thick and non-spillable, reducing the chance of acid leaks and harmful fumes while improving resistance to vibration and shock—making these batteries well-suited for rugged or mobile applications. Compared to AGM batteries, these GEL cells have a slower self-discharge rate, so they retain charge longer when not in use. Built to deliver reliable power across a wide range of temperatures, the ML9-12GEL performs consistently in both hot and cold environments. Backed by Mighty Max’s reputation for quality, this rechargeable GEL battery provides enhanced safety, steady discharge performance, and long-lasting service life.