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Where to purchase a CyberPower SE425G CPS3.6-12 Battery

The CyberPower SE425G UPS Battery Backup is a very reliable, affordable, and good quality product. The only problem: It’s weird, non-standard Battery size which has become a problem to purchase. It’s very difficult to find a reliable source even on eBay or Amazon. The UPS comes with a VRLA Rechargeable Battery from B.B. Battery, model CPS3.6-12, and at the time I wrote this article, I was unable to purchase a replacement battery on their website.

Although I have installed dozens of these battery backups and they worked for years, I knew the battery would eventually give out. I had to find a solution, and I came across this product by BBM Battery, model SHR3.6-12: https://bbmbattery.com/products/shr3-6-12-bb-battery-12v-3-6ah-battery. I ordered a few of these batteries and the replacements are the exact same size and electrical specifications. The batteries fit right into the battery compartment in the SE425G and worked as expected.

Battery Specifications:
Part No.: SHR3.6-12
Chemistry: Sealed Lead Acid/AGM
Voltage: 12.0V
Capacity: 3.6Ah
Dimensions: 4.02″ x 1.89″ x 2.59″
Terminal: T2 (.250″)

Download PDF Datasheet

Original Battery CPS3.6-12 (left) and new battery SHR3.6-12 (right)
Perfect fit inside the CyberPower SE425G