Mighty Max Battery 12V 9Ah SLA Battery Replacement for BB SH1228W - 2 Pack

Used to replaced old failed UPS batteries. Fit perfectly in factory harness. Very easy to install with only basic electrical knowledge. Fully charged on install and working perfectly after first week plus. No idea of longevity yet of course but cell quality looks good in an exterior sense.

Ordered 4 of these batteries to swap out the old batteries for 2 CyberPower UPS systems. The batteries were the exact same size as the original batteries, and when installed, they worked very well. Did a test run with the UPS system with these batteries and they lasted longer under a similar load than the Original batteries when I first got the unit.

Don't throw your battery backup when you can easily change the batteries. Took less than ten minutes and seemly more powerful. I have a mighty Max on one of my motorcycles and it's lasted so hopefully these are also good quality.

12-18 Months. That is it. Seriously. Better than buying a new unit just for batteries.

Worked well for some time. UPS showed good capacity and estimated run time with my load about 90 min even 18 month later. I happened to test it and actual run time was just under 10 min. Original batteries lasted at least 5 years for the same performance degradation.

Got these to replace my pc battery backup unit. The original batteries exported in them and these were great and cheaper alternatives. Will buy again if needed.

Batteries do go bad, and instead of getting OEM replacements, I popped over to Costco and got another UPS for less money. When I had the time to research it, these batteries were determined to be suitable replacements and even had a higher AH rating than what was originally installed so it was a win-win over all. This refurbbished UPS found service supporting my daughter's PC (whom I'd apparently forgotten about when planting UPS's around our extended internal network. Yes, I AM that paranoid). Don't know about the usable life yet but there's a new sticker on the UPS with the installation date on it. The last one was installed in 2014 we've got a way's to go.

The Cyberpower UPS supply that I have has the batteries stack with the terminals sandwiched between the batteries. The batteries are connected in series to produce 24 VDC. Just make sure that they are physically the same size as the batteries that you are replacing and you should be fine. These had the same amp/hour rating as the Cyberpower batteries that I replaced. For UPS battery replacement lay the old batteries and new ones side by side and orient them the same. You will to transfer the cables to the new batteries and use the tape from the old setup that ones the batteries together. I cannot speak to the longevity of the batteries on the UPS but I am hoping to get at least 4-5 years of service out of them.