NPP HR1221W - 12V 5Ah Rechargeable AGM Battery, 21Watt / Cell 126Watts F2 Terminals, Chamberlain Garage Door Batteries Replacement for DJW12-4.5 UB1250 485LM Alarm Emergency

I have bought these many times. Most UPS batteries last about 2 years. I replace the batteries to keep costs down. These 12V 9 Amp HR batteries keep my computers running during quick power surges and brown out. But more often it is a tripped breaker that these save us from data loss, epically during the winter when users are running space heaters at their desks. A space heater and laser printer will trip the breaker almost every time.

Finally a set of correct fit batteries with a decent capacity. Made the battery swap easy. Have used them for about a month, scooter runs great and has better range than before with the OEM batteries.

The original battery in my CyberPower 850PFCLCD died after serving 12 years. It was a B.B. battery, HR1234W.I bought this battery as a replacement and it was perfect match. Not that difficult to remove the old battery and install the new one.

EDIT1. Positive Comments apply to Seller and productHowever :Second purchase never came about !Got full cooperation from vender, who sent me a Refund, because item was out stock.Item shows Delayed, ? ?1. Sturdy built2 Exact same size as originalRated at 9 AH .. best that I could find3. Tight fit due to Device design Same as originalArrived Fully Charged .. 12.85 Volts

Has F1 size male connectors on battery but my UPS has F2 size female connectors. No problem. An F2 female can fit over a F1 male or you can buy F1 to F2 adapers. Just make sure the battery dimensions will fit in the space available and that you are selecting the correct voltage for your replacement.

Battery died after a couple of months of use/charging.

I have not had the unit for long so cannot attest to longevity.It was NOT easy to install but that was because of the lack of room in the UPS battery alcove I was installing it in.That being said, its been a work horse since I started using it. We have lost power a couple times and its kept my computer, my Sister's computer, monitors, modem/router, desk light and transfer switch all powered up.We asked for an hour of use and it gave us 2 before power was restored.

No date codes! Was disappointed when I opened the package to see this. I hope the company honors its warranty! Will update if anything happens