Mighty Max Battery 12V 9Ah PowerWare PWHR1234W2FR Replacement UPS Battery – 8 Pack
€159
Price: $158.99
(as of Sep 27, 2025 00:12:42 UTC – Details)
From the brand
Are you powered to the Max? From this question, Mighty Max Battery was born and became a household name. With over thirty years of collective experience in sustainable energy, power sports, mobility and more; we pride ourselves on the respect of our environment while embracing technology of the future. Our mission is to power the person in need of mobility freedom, the person with dreams of life off the grid, and everyone in between.
What do we power?
Our line of Mighty Max batteries provide max performance to over 200,000 products. We create products for use in Computer Back-UPS, Children’s Ride-On Toys, ATV’s, Motorcycles, RV’s, Golf carts, Off-Grid, Solar applications, and more!
Why do we love what we do?
We value every person and are passionate in being the solution to their needs. Whether it’s igniting their ride, fueling their generator, or turning over their lawnmower – we love powering our customers. Our knowledgeable team are ready and eager to resolve any questions or concerns.
SLA Batteries
What makes our products unique?
We offer state of the art ingenuity by investing in a dedicated engineering team. Our batteries provide exceptional service life in float and cyclic applications. Our solar panels are constructed with high transparency tempered glass, corrosion resistant alloy frames, and an EVA Film layer that has great radiation transmission and low degradability to sunlight.
How did we get our start?
Mighty Max’s entrance changed the game and the industry, we made it quick and easy to identify the proper battery that is compatible to your application’s requirements.
GEL Batteries
Solar Panels
Lithium Batteries
Powersport Batteries
Chargers
Accessories
ML9-12 SLA is a 12V 9AH Sealed Lead Acid (SLA) rechargeable maintenance free battery, Pack of 8 – UL Certified
Dimensions: 5.94 inches x 2.56 inches x 4.02 inches. Terminal: F2. Listing is for the Battery only. No wire harness or mounting accessories included.
SLA / AGM spill proof battery has a characteristic of high discharge rate, wide operating temperatures and long service life.
Rechargeable battery that can be mounted in any position, resists shocks and vibration. Long lasting high performance in high and low temperatures
Full One Year Warranty
Customers say
Customers find these batteries to be good value for money. The battery life receives mixed feedback – while some report that 8 units worked perfectly, others note that they don’t last as long as OEM units.
8 reviews for Mighty Max Battery 12V 9Ah PowerWare PWHR1234W2FR Replacement UPS Battery – 8 Pack
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€159
Steve in Sarasota –
Good value, long service life
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.
tlizzie –
I like these
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.
betsy lionetti –
These were prefect fit for a set of UPS units that I had.
I had picked up at auction, 8 x UPSes…2 x APC BackUPs 650, and 6 x Tripplite SmartPro 1000LCD. All 8 units worked perfectly except all batteries were dead. This 8 pack of Batteries fit perfectly and the shipping time was fast, all units were in perfect working order. Nice that the shipment was 2 x boxes of 4 batteries each too since all 8 in a single box would have been too heavy. 🙂 Were packed well too.
Lambert –
Working in my UPSes.
Working in my UPSes.
Eric XYZ –
Work as expected
APC UPS battery replacement works as expected.
Not a Happy customer –
They just do not last like OEM battery’s do and they will let you down when you need them most!
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
J. Griffin –
Great value
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.
Frank –
Installed in UPS
I have installed in my UPS system and they are working great no problems.