Delivering power when you need it, the Mighty Max ML9-12 12 Volt 9 AH uses a state of the art, heavy-duty, calcium-alloy grid that provides exceptional performance and service life in both float and cyclic applications.
The ML9-12 is an Absorbent Glass Mat (AGM) technology with a valve regulated design, that can be used in enclosed and indoor environments without leaking or maintenance, providing a superior performance for thousands of models.
Mighty Max SLA batteries are utilized in a wide variety of applications including; Consumer Electronics, Electric Vehicles, Engine Starters, Golf Carts, Hunting, Lawn and Garden Tools, Medical Mobility, Motorcycles, Power sports, Portable Tools, Solar, Toys and Hobby, Access Control Devices, Emergency Lighting, Security and more.
Specifications:
Voltage: 12 Volt
Amperage: 9 AH
Chemistry: SLA, AGM
Terminal: F2
Battery Dimensions:
5.94 in x 2.56 in x 4.02 in
Weight: 5.10 Lbs
Warranty
1 Year
Ted (verified owner) –
Good service & fast shipping! Looking fwd to the extra 2AH over the APC UPS battery in the same size package.
Les –
I like this brand and they fit what they say they do. I bought this to replace my UPS battery and it fits perfect and from my experience from prior UPS replacements these last a long time. So I was please to find this and get it. Worked out of the box and fit perfect.
RJ –
I use this in a UPS on my pellet grill. So far, it did save a meal from a short power outage. I don’t expect it to last the typical 3 years, but that’s only because it’s used in rather warm conditions. For the price, I’d be happy buying one twice a year if I need to. Good battery and fit perfectly. APC SmartUPS 850.
WARezDOG –
Sure you could spend nearly twice the price for a branded battery but would it be twice as good or last twice as long? The answer is NO to both of those questions. Batteries either work or they don’t, if you install them and they fail immediatley you’ll have a 30 money back and a 1 year warranty. I generally expect batteries to live 36-40 months before you’ll need to replace them and the last batch made it 38 months. Been a mighty max customer for years as their batteries are good and consistent among batches which is important in any ups that has more than one battery.
Tom Z –
This item had a good price for a replacement UPS battery. It fit perfectly and installed easily. Company offers an additional warranty if you go online to register the battery, which I did. Plugged my APS UPS in overnight to make certain the battery was well charged. The next day I plugged my computer and monitor in and it powered them without issue … for 5 days. At that time the UPS started beeping and indicated a low battery. Put the battery in different UPS and let it charge overnight. The second UPS started beeping and indicating low battery after an hour. The biggest reason for the one star rating is the extremely poor customer service. I contacted the company via email, which was provided when they shipped, and it has been 2 weeks and no response. Extra warranty is a joke, when there is NO warranty response. I’ll look for another brand. Update 4/20/2022: Upgraded from 1-star to 2-star. Finally was able to contact somebody in customer support via telephone. They are shipping another battery to me. I’ll revisit my review after I receive the battery and see how long it lasts. Update 4/28. Upgraded to 4-star. Received the warranty replacement battery, and the UPS appears to be operating properly now. Still deducting 1-star because the company never responded to email messages. To their credit, they do respond to a telephone call.
D J. H –
Fit my model of APC backup unit.
william andersen –
nothing
Book Reader K –
Bought this battery in 2/17. It gave out after less than 22 months. Not much of a comparison with APC’s stated three to five year life claim for their original RBC17, but the replacement APC battery costs 2/3 of a new UPS. Thinking I’ll try a different brand this time.
Ykjimr –
The battery arrived on time, was a good fit and installed easily. There were no problems whatsoever.
Frank B. –
Works as intended , only real negative is the terminal posts are smaller then OEM and can lose connection if its moved/shaken hard enough…. I dont plan on shaking my UPS so it works for me 🙂
PowerM –
Product fit perfectly and works great. Perfect shipping too.
Ken from Utah –
It works. Terminal adapters were required for compatibility with APC battery backup. Okay now. Time will tell if it was a good choice.
Tim Goldstein –
Got my UPS running again at a reasonable cost. Run time seems to be very good and even though the terminals were a different style, I was able to install it without any additional adapters.
nick benson –
Just what I expected and ordered! Perfect!
E V. –
I’m glad I bought it. Please note that I’ve waited a few months before submitting a review. Original battery gave out a few months back. I installed this without any issues. Tested prior to installing and have tested recently. Worked as intended. I let it charge back up and it reads the and as when I initially tested. Guess I’ll see if it holds up as well a few months from now. Satisfied with the purchase and the customer service. Thanks
GPaw Neil –
Worked well as a replacement for my wife’s UPS
Arnaldo Ramos-quiles –
Great battery, fit excellent in my UPS battery back up. Great price.
SH –
worked perfect in my APC 600VA Backups
john g moeller –
No problems. Simple to do the replacement. Works fine. Restored the minutes on battery to slightly better than previous battery when it was new. My only complaint could possibly be that I don’t know what to do with the old battery.
Todd –
Replacement for failing computer power back up. Fit great, works great.
Katia –
The battery works fine, but its terminals were smaller than the connectors in the UPS were designed for, so it required some crimping to get a good connection.
Customer –
The battery has performed well so far. With any of these aftermarket battery purchases, the real question is the longevity of the battery cell(s). Out of the box, the battery powered up our UPS without issue. If this battery lasts for at least a year, then it’s worth the price we paid for it.
Stephen Russell –
Fit and finish great.
G. Ching –
Great value. Fits my APC backup unit well. Battery does have smaller terminals, but slightly crimping the backup unit terminals will make reliable connections.
Customer –
Battery seems to have solved the problem with my TrippLite G100UB UPS. No fault of hte battery but, I did discover that this model of the TrippLite does have some wacky reset procedure, you have to let it charge the battery turned off with nothing plugged into the unit and then turn it on and off and unplug it several times to get it to recognize the new battery and reset. Worked fine once it was reset. We’ll see how long this battery lasts.
Texfun738 –
So far, so good ? a cost-effective replacement battery for an APC Back-UPS 650. The battery has F1 terminals ? I don?t think this would have been a problem with the Back-UPS F2 connectors (just slightly loose), but I just used the ‘F1 to F2 Terminal Adapters for Lead Acid Battery – Step UP.’. to ensure a snug connection.
A. Thakar –
Have not yet had a chance to test its full capacity, but it charged quickly and provides enough power to keep my electronics running during the small power outages we have had.
B. Benjamin Ventura –
Great products. Works as advertise.
Larry Thompson –
Fits perfect and operating just fine so far.
Paul Medema –
This is a great battery and really good price. Fit perfectly in my UPS
Gary Johnson –
Fit perfect in my APC 650. Works like new.
Paul R. Tate –
Good price, fast service
supertool –
This battery is supplied with F1 terminals, which are 3/16 wide. However, the APC UPS battery uses F2 terminals, which are 1/4 wide. As a result, the connection between battery and UPS is very loose, and tends to disconnect as the battery is inserted into the UPS. At the very least, this battery should be supplied with 3/16 to 1/4 terminal adapters.The battery itself has the correct dimensions and 9Ah rating to be a proper replacement for the APC RBC17 battery. Once I managed to install the battery w/o the wires getting disconnected the battery has worked fine, but the hassle in the installation has cost it 2 stars in the rating.
sore hands –
Prompt delivery and good price.
Bob –
Best price around fast shipper works great thanks
Todd Goodsite –
I have had this battery for 3 months so far with no issues.
Cheryl Caton –
great replacement battery
Miller B. Mccrabb –
did what it designed to
James Chambers –
Great value!! correct replacement part for my UPS
Robert L. –
Battery was an exact fit, reasonable price, quick ship, easy order