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Mighty Max Battery

Mighty Max Battery 12V 9Ah SLA Replacement Battery for CyberPower CP1500PFCLCD - 2 Pack

  • Based on 206 reviews
Condition: New
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Availability: In Stock.
Fulfilled by Amazon
Arrives Tuesday, Oct 6
Order within 21 hours and 35 minutes
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Features

  • ML9-12 SLA is a 12V 9AH Sealed Lead Acid (SLA) rechargeable maintenance free battery, Pack of 2 - 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

Description

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. 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! 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. 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. 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.

Number of Batteries: 2 12V batteries required. (included)


Brand: Mighty Max Battery


Battery Cell Composition: Lead Acid


Battery Capacity: 9


Recommended Uses For Product: Power Tool


Number of Batteries: 2 12V batteries required. (included)


Brand: Mighty Max Battery


Model Number: ML9-12MP


Model Name: ML9-12MP


UPC: 810185372324


Manufacturer: Mighty Max Battery


Included Components: Complete


Warranty Description: 1 Year Manufacturers Warranty


Battery Cell Type: Lead Acid


Battery Capacity: 9


Voltage: 12 volts


Reusability: Rechargeable


Amperage: 9 A


Compatible Phone Models: No Phone Models


Unit Count: 2 Count


Battery Weight: 11 pounds


Item Dimensions: 5.94 x 2.56 x 4.02 inches


Item Weight: 5.1 pounds


Antenna Location: Power Tool


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Tuesday, Oct 6

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Similar Products

Top Amazon Reviews

    • Great Quality and Value
I’ve purchased these batteries once before for one of my two CyberPower CP1500PFCLCD backups instead of the overpriced originals. I don’t see any discernible difference between these and the OEMs and they are less than half the price. The size is pretty standard so they fit as expected and they seem to last just as long. They came packaged very well and were double boxed. Buying them again for my other CP1500PFCLCD was a no-brainer. ... show more
Reviewed in the United States on July 11, 2026 by Glenn
    • Perfect replacement
these fit perfect in my CyberPower CP1500PFCLCD and total install was less then 10 minutes and my UPS is back and functioning once more. will update more when they have a little time on them to see how well they last, so far its a cheaper alternative replacement.
Reviewed in the United States on February 26, 2026 by Christopher
    • Works just as well as brand name
Totally fine out of the box. Works just as well as the name brand. I've used these before and they have been working well. Note that you really need to replace these every couple of years as indicated unless you have aot of power issues, then it could be sooner replacement Nevertheless, much less expensive than the brand name and does the job. Note that when you install these batteries, it's always going to be a snug fit no matter what. The battery is designed for the unit that you purchase it for, and it's always going to be a snug fit regardless of the unit. That's intentional and it does a fine job staying in place once you have it in there. This particular installation took me a little bit longer because I was using a different model UPS than I normally do. But that is no fault of the battery, that is the fault of myself for not doing adequate preparation ahead of time. Would buy again. ... show more
Reviewed in the United States on July 1, 2024 by B.J.R.
    • Perfect fit for Cyber Power CP1500PFCLCD
Fit perfect, same voltage and amp hours as the original. After about 4 years the battery life in my unit started failing. Would only charge to 80% and drain almost immediately with only a 32W load (should last 1.5 hours). Replaced them with these and back to normal. Great replacements.
Reviewed in the United States on November 3, 2025 by DJ
    • Works for Cyberpower CST1400S
Cyberpower CST1400S UPS bought over 10 years that we've been using for the AV equipment (TV, sound system, consoles, etc). Had a power outage and after about 20 minutes went to see how the UPS's were doing and this one was off, the others were fine. Wasn't sure if it was the battery or something else, so waited about a day after the power came back on and unplugged the UPS to see what was going on. There was a minimal load and could see the run time remaining quickly dropping and within 20-30 seconds it turned off. So yeah it's the batteries. Looked in the manual and the replacement battery part # is RXB1280X2B. Web search shows it being a little pricey, almost enough to consider getting another UPS. But noticed reviews saying you don't need that as you can just replace the batteries and use the same adapter. The adapter has 2 wires that connect the batteries in series, and a connector so you can plug it into the UPS. Pulled the batteries out (there are 2 screws on the bottom under the front panel, remove those and then slide the panel down and it will come off) and saw they were HR1234W batteries. Did a search for those and found these batteries for a good price. I checked the size measurements with a caliper and they matched perfectly. They arrived yesterday in great shape. They were each in their own little boxes, and both in a larger box with foam padding on the sides. The corners look to be well protected. Installing the new batteries is fairly foolproof, disconnect the old batteries from the adapter and connect up the new ones, just follow the polarity and you'll be fine. Used the same tape that was on the original batteries (one side has the tab so you can pull them out) plus added some clear packing tape for extra strength to hold them securely to the adapter. It slide back into the UPS battery opening no problems at all. Let it charge overnight (was still using the TV, etc last night) and then unplugged the UPS and it's working like new again, reporting over 2 hour run time on the same load after letting it run for about a minute. Used the KONNWEI KW208 battery tester on both of the old batteries (check -> out-of-vehicle, AGM flat plate -> CA -> 130A) and one of the batteries was shot, 120 mOhm and 20A, and the other was 16 mOhm and 140A so still going strong. I'll keep it for any other possible use. Also tested these batteries when I opened them, forgot to write down the readings but they both measured great. I'll update this review if these batteries fail early or give any other issues. ... show more
Reviewed in the United States on June 23, 2024 by Eric
    • Good batteries that last longer than the warranty.
Review Image by Greg
I have been using Mighty Max batteries in my 2u APC UPS for years. They work well and last a long time before needing replaced. Mine seem to always come in fully charged too. In this case I replaced the batteries in my Cyberpower1500PFCLCD. Just put them in and they were fully charged, as expected. Will buy again. ... show more
Reviewed in the United States on November 21, 2025 by Greg
    • charged, but lighter weight
Batteries were charged and measured 12.84 on the 12v test. Weight per battery was 5lb 3oz which is a bit concerning given the original cyberpower batteries weighted 6lb 12oz each. I'm sure these wont last as long, but they were cheaper so worth a shot.
Reviewed in the United States on March 18, 2026 by Rob
    • Perfect fit
Great 👍
Reviewed in the United States on May 1, 2026 by Thomas R Hammond

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