Mighty Max Battery 12V 9Ah PowerWare PWHR1234W2FR Replacement UPS Battery - 8 Pack

With a little elbow grease, I managed to turn several of our UPS units to nearly new condition for another 2-3 years. Since 2020, the cost of each UPS unit is almost double. All I have to do is changing out the old batteries inside, which degraded slowly by our constant charging/decharging on daily basis. It also reduce space in landfills, so this is a great value overall. I've used batteries like this before, so it's very effective and good quality. Amazon has saved us tons of money on this solution. I highly recommend it.

This pack of batteries is probably the best value available for someone who, like myself, has several UPS devices protecting critical network, storage, and computing gear and doesn't mind doing a bit of manual labor to retrofit them into the original APC battery caddies. Fun fact, if you take the spent ones to Auto Zone they will recycle them and give you $10 store credit just like they do for full size automotive lead acid batteries so you can recoup a significant part of the cost of this item as long as you have a use for Auto Zone store credit.

Worked great in some old APC UPS units. I used gorrilla tape to arrange 4 batteries in a block, then moved the wiring over, then another band of gorilla tape to secure the wires in place while I slid the block into the UPS. So far so good, should last about 3 years, just like the last set.

We use these professionally to rebuild data center battery packs for APC Uninterruptable Power Supllies. We've purchased over 100 in the last three years. They equal the OEM specs and are outlasting the APC factory units. On average we're getting about three years out of them before they need replacement, a year longer than the OEM batteries. FWIW the gel cell version of this battery (as opposed to this model, which is SLA, sealed lead acid) is also offered by Mighty Max on Amazon. The gel cell's a little better if your application requires frequent deep discharge. For UPS battery packs, alarm systems, etc. this SLA version is fine.

Working in my UPSes.

I have been using dozens of these over the past few years for UPSs, alarm system, powering devices. Its a good value, longevity is about 3 years.

Same as other folks they do not last. I have bought 100+ of these battery's to use in a APC Symmetra Lx16kw UPS (high dollar data center grade true sine wave battery back up. We did the full replacement of all the packs at same time and even replaced F2 spade connectors on all of the jumpers with original style heavy current rated self locking F2 connectors using a factory type roll over crimping tool and reset the BMS in every one of the battery packs that hold 10 each of these battery's. Sadly, like many others have reported and shown pics of one or more of these battery's fail in the pack and then all of them over heat and completely fail. I have a pallet full of them I could add pic s of that look the same! Yes the charge current is correct the diagnostics show the battery's taking full charge then switch to float and shut off shunt current correctly down to micro amps trickle but after a few months they start failing during self test cycles. So have not had one set last over 18 months. Hard lesson learned but now have to replace all of them again this time going back to OEM brand (CSB) they last 8 years cost 30% more but last 200% longer. Truth be told the only thing mighty about Mighty Max battery's was the mighty maximum disappointment. Spend a little more and buy what the OEM used from the factory if you do not want to be replacing them every 18 to 24 months

We are very happy with the batteries that we have received. This is just one of many purchases of mighty Max batteries that have been used in our UPS/APC and other power management devices. Out of all the different batteries that we've tried the mighty Max batteries are first choice. Saving our company hundreds of dollars in replacement batteries.