ExpertPower EXP1290 12 Volt 9 Amp Rechargeable battery

I've had my Cyberpower 1500PFCLCD UPS for about 4 years now. I noticed that despite no indicated internal battery problems, the UPS would fail during brownouts or other equipment being turned on. It did not use to do that. To validate, when I have my UPS connected to the wall (with zero loads plugged into it) and I disconnect the AC mains from the UPS, the unit would insta-power off instead of staying on (and running from battery power). This is the classic symptom of a dead internal battery! Anyways, Replacing the battery was straightforward. I picked up a pair of these Expertpower EXP1290's instead of shelling out more than double for the Cyberpower (supposedly) original battery. In reality, the 'original' batteries are Leoch DJW12-9.0's. These batteries arrived about 3/4 charged (~12.74 VOC), in a well protected package. Delivery was quick (2 days). After replacement, the UPS now behaves normally and correctly stays on / runs from battery when it's disconnected. No error messages or other silliness. Also, for what it's worth these terminals on this battery actually fit the internal connectors 'better' than the original. Your milege may vary on that tho, I'm sure it's game of sub-millimeters. While I cant yet confirm if these batteries will last as long as the original; their value is spectacular when compared to the original batteries. Operation looks good. I will update this review in the next few months if anything untowards occurs -- which I doubt. Highly recommended!

When Craftsman designed their Battery Start Lawnmower in the 1990's, they supplied a $90.00 small battery pack to start it with. It was 6 small D sized NiCad batteries inside a box that was used to start the mower with. The previous owner didn't want to spend $90.00 on a replacement battery that would go bad in a short time. Over the years the NiCad batteries deteriorated, and that is why I got my lawnmower for free from the sidewalk in my neighborhood. I modified the battery chamber to accept a small Walmart small lead acid battery, but they too seem to go bad in 2-3 years. I bought this 12 volt 9 Ah LiFePo battery to see if it will last longer than 2-3 years. It starts my mower much better than the Walmart lead acid battery, and now I have a fully functional 30+ year old lawnmower again. The lawnmower magneto recharges the battery when it is running, and I haven't had to charge the new LiFePo battery in between uses of the lawnmower at all. The onboard BMS system inside the battery manages the charging routine when the mower is running and it seems to recharge it well. Hopefully this battery will make my vintage lawnmower work for me for many more years. I am building a padded steel box to secure this new LiFePo battery to the mower deck because it is too large to go into the original small battery compartment of the mower deck. Stay tuned to see just how long this new battery technology battery lasts, but for now it is working very well.

Easy to change out the failed battery in my computer system uninterruptable power supply. Way cheaper than a new device and one less in the landfill.

It works fine for my Cyberpower and APC BE650G1 UPS. Battery capacity is as expected. Fits right into the OEM plugs.

Good battery!