CyberPowerRB1280X2B UPS Replacement Battery Cartridge, Maintenance-Free, User Installable, 12V/8Ah

This will fit a variety of Cyberpower models. I have the very strange CP1500PFCLCDa which requires a little extra effort. The key is the little tiny a at the end which isn't on my battery instruction sheet that came with this battery from what I could tell. It will still work just fine though. This battery arrives coupled using a plastic piece which binds the two batteries together. You can disconnect the two batteries from that plastic connector. Then you have the two batteries you need and separated how you need them. Once you unscrew the front plate of your machine one battery will slide out and you can unplug it. Keep track of what cable went with what connector. Take a picture before you unplug them. Then you'll need to unscrew one more little metal brace and the second battery will slide out from behind it and it is configured sideways compared to the first battery. Again take a picture before you unplug it. Then plug in the first battery and slide it in. Then slide in the second battery and plug it in. Make sure you plug it exactly how it was when you unplugged it and don't rely on the colors because the colors don't match up in any way. Then screw in the metal brace and attach the front plate and screw it back in. You may need to try to seat the front plate two or three times before it settles back into place. I just threw away the extra plastic piece since it's useless. You can recycle the two batteries leftover I'm just not sure where yet. Don't throw them in the garbage.

I've bought four of these over the years (for two different setups), and they've always worked wonderfully. They're quite easy to swap out, and not having to replace the whole UPS is obviously ideal. Will continue to purchase them into the future.

There are different batteries for the CP1500PFCLCD depending on the serial number. Mine uses individual batteries. No problem if you get this one. Just pull the tape off and the batteries come apart. Easy to install. Just take a photo of the wire colors before you start. Might want to mark the new batteries before disconnecting anything so they don't get mixed up with the old ones.

OEM Batteries, packaged very well, arrived on time, and were undamaged in any way. Kudos!Replacement was pretty straightforward - unscrew two screws on the bottom of the faceplate, slide the faceplate down toward the bottom of the unit, and lift. The old batteries are easily accessible from that point out - just remove the plate holding one of the batteries, then wrestle (I mean that!) with the wires to take them off, remove old batteries, replace with new ones, reconnect cables, put the retention plate back (2 screws there also), then slide and secure the faceplate, and you’re done! Oh, just make sure to power down and unplug the UPS - no need to get jolted! The batteries I received actually were the upgraded version of what I purchased.Overall, a very uneventful replacement, which is exactly what you want!

After using UPS products from multiple manufacturers, CyberPower UPS are the best I've used. Also, the batteries come with a CyberPower certified label, meaning they're OEM or at the very least approved by CyberPower. But the reason for this review is to point out that the description for this item states that it's compatible with model CP1500PFCLCD. It's true, but incomplete. According to CyberPower Systems specs for this model, this battery (RB1280X2B) should be used for units with a serial numbers beginning with CR9, CXF, or CQC. For CP1500PFCLCD units with a serial number starting with CXX, owners should buy Battery Cartridge RB1290X2 instead. This information can be confirmed at CyberPower Systems website. It could be the reason why some reviews say it was somewhat complex to install the new batteries. They must be compatible (same specs) but not exactly the same. Model RB1280X2B comes with the two batteries connected to each other, which would require them to be disconnected before being installed to a "CXX" CP1500PFCLCD unit, while RB1290X2 comes with two separate batteries. So double check your CP1500PFCLCD serial number before buying this Batteries.

After reading the reviews here, watching some videos, etc. I feel fortunate that I got a battery pack that fits my UPS correctly, albeit a bit tightly. Installation required some grunting and cursing, but I got it working in a reasonable amount of time.There are very many flavors of CyberPower devices even within some model numbers, and the instructions provided with this battery pack are not entirely clear - My exact model of Sine Wave UPS was not listed without a cryptic two-byte prefix. The only part of the instructions that was correct was to remove the front panel, but it doesn't exactly explain how to do that. In my case it was two screws at the bottom, then the panel slid off toward the downward direction.If you are reasonably good with tools and electronic stuff, you can probably figure it out without too much hassle.My battery pack arrived with about a 65% charge on it according to the PowerPanel Personal application, though it took several minutes for the software to figure it out.Good product at a reasonable price, but beware. Maybe calling CyberPower tech support to make sure you are getting the right battery pack would be a good idea.