Mighty Max Battery ML5-12 - 12 Volt 5 AH SLA Battery - Pack of 4

Perfect replacement for my 11-year-old alarm system battery; it solved all my issues. Simple, affordable, and works as expected.

This battery arrived quickly in perfect condition. The description didn't specifically say it would fit in my APC Back-UPS 425, but it fit perfectly, was easy to install and as you can see in the photo got a green operating light when I turned the unit on. I just installed it today, but I will report back if any problems occur.

Good item for a reasonable price. Fit my alarm system requirements.

My original Chamberlain backup battery expired after 9 years ( it began beeping to notify me that it needed to be replaced). I removed it to stop the beeping and debated whether to replace it. I found the Mighty Max on Amazon and decided to buy it since it was affordable and produced in the U.S. The battery arrived the next day, fully charged, and was easily installed. It was compatible and I tested it by unplugging my door opener and raising my door using battery power. It worked perfectly. I will be extremely pleased if it lasts 9 years like the original.

Used in Chamberlain garage door opener. Battery seemed to do everything it was supposed to and fit perfectly. It failed after just under 3 years. Side split open. Guess I couldn't expect more for the price.

I use this battery in my garage door opener. Fits perfectly and lasts seemingly forever.

The battery on my garage door opener failed. So I replaced it with this one and it fit into the door opener and it works perfectly fine.

Perfect fir and works out of box! Happy Grandchildren

بطارية ممتازة تعمل جيدا

Funciona perfecto y siempre es satisfactorio cuando ves la calidad de lo que estás comprando desde el empacado.

Installed it today no issues. Worked as a perfect replacement for my craftsman 1/2hp belt drive garage opener. Hoping it lasts as long as the original.

Arrivée comme prévue et fonctionne bien avec mon moteur de porte de garage LiftMaster.

buen producto.