Rated 4.86 out of 5 based on 37 customer ratings
(37 customer reviews)

$24.99

12V 9Ah UPS Battery Replacement for APC BE550G

SKU: ML9-12101 Category:
Thumbnail Short Description Price Add to Cart Button
$ 24.99
$ 44.99
$ 84.99
$ 119.99
$ 159.99
$ 199.99
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
Multi Packs Bundled Savings

1 Pack, 2 Pack, 4 Pack, 6 Pack, 8 Pack, 10 Pack

Volts

12V

Amp Hour

9Ah

Chemistry

SLA / AGM

Terminal

.250" – F2

Quantity

1

Length

5.94

Width

2.56

Height

4.02

Weight

5.10 Lbs

Warranty

1 Year

37 reviews for 12V 9Ah UPS Battery Replacement for APC BE550G

  1. Rated 5 out of 5

    gary d. (verified owner)

    exactly what I needed and received it on a real timely basis and the cost didn’t clean me out, either

  2. Rated 5 out of 5

    knitting ninja

    This battery installed in less than 5 minutes. The terminal connections fit perfectly. Unit performs as expected after install.

  3. Rated 5 out of 5

    JKBinVA

  4. Rated 5 out of 5

    KBC

    So far so great. I will update if any problems develop. So far meets or exceeds my hopes.

  5. Rated 4 out of 5

    Jabiru

  6. Rated 5 out of 5

    Saurabh Sen

    This 12V 9Ah replacement battery for APC BE550G was 2 minute easy installation and a perfect fit. Do not know how long it will last but it came well packaged and looks decent. Customer support was great to resolve my issue.

  7. Rated 5 out of 5

    Rob Bartel

    Working great so far. Only installed them a couple weeks ago and everything went smooth and are working great.

  8. Rated 5 out of 5

    Golden Guy

    I bought this 12V 9Ah UPS Battery Replacement for APC BE550G and was at first skeptical if this MightyMax battery would work well, but so far I am pleasantly surprised. It fit my APC UPS like a glove, was well packaged, easy to connect, and after a few weeks is still working well. I haven’t had it long enough to determine how long it will last, but am optimistic at this point. I usually pay over $40 for a replacement battery so this is an outstanding value! I’ll buy it again!

  9. Rated 5 out of 5

    Allan

    Easy to install, great price.

  10. Rated 5 out of 5

    Overlord55

    Perfect replacement!

  11. Rated 5 out of 5

    Scott

    More powerful than the RPC battery I replaced and was an exact fit. I didn’t know how to answer the longevity question since I recently purchased it and don’t know how long it will last.

  12. Rated 5 out of 5

    Michael

    Direct replacement for the battery I was replacing in my Cyberpower UPS unit.Had an issue with battery, resolved very quickly. Excellent customer service!

  13. Rated 5 out of 5

    JB

    Have an APC BE550G UPS & almost ashamed to admit I’d let the OEM battery run for over 8 years, which I guess is a testament for APC’s quality. The failure left me in a very tentative situation, as the UPS was responsible for our modem, router & voip phone connections (all very important to us). We needed to remedy the failure reliably and at a reasonable price as soon as was possible. The Mighty Max Battery arrived quickly & works perfectly – installed without a hitch. — Would highly recommend this product.

  14. Rated 5 out of 5

    Customer

    This battery fit perfectly in my APC BE550G UPS.

  15. Rated 5 out of 5

    Customer

    The Mighty Max Battery was the exact replacement I needed. It was less costly (battery + free shipping) than the APC RBC 110 replacement for my UPS. It also has a higher 9 Ah rating than the stock battery’s 7.5 Ah. It match’s APC’s 1 year warranty, but also provides a 30 day refund policy in case you ordered the wrong size. Now I have to see if it has the same anticipated longevity (3 – 5 years) as the original , which is why I gave it 3 stars for longevity as I hope it will last 3 years, but only time will tell. So far so good!

  16. Rated 5 out of 5

    noname4

    Easy to instali

  17. Rated 5 out of 5

    g

    These are brand new batteries made in Thailand. Shipping was vey prompt.

  18. Rated 5 out of 5

    Logistics Guy

    After 8 years the OEM battery in our UPS failed. This battery fit perfectly and was in service as tested two days later with no issues. We went with a 9AH vs the 8AH that was originally installed in our unit as the 9AH fit and will theoretically last a little longer.

  19. Rated 5 out of 5

    brett

    I gave it 5 stars because I?m happy with it but I don?t know about the longevity yet. I bought this as a budget power wheels battery replacement. After getting everything wired in it worked perfectly. No over heating or anything. I would recommend this as a suitable replacement for the power wheels batteries at less than half the cost.

  20. Rated 5 out of 5

    David Z

    We use this UPS for a TV,DVR,and Roku. It fit like a glove and I had occasion to use it a week after it came in and was installed. We lost power due to a storm and I turned off the TV and it kept the DVR working for the hour it took for the power company to restore power.

  21. Rated 5 out of 5

    JamesW

    I needed a new battery for a UPS and this fit the bill.

  22. Rated 5 out of 5

    Chuck

    Battery arrived ahead of schedule. Battery fit perfectly in UPS unit and connectors fit tightly without any adjustment required. Arrived almost fully charged and has been working fine since I received it a few weeks ago. Very satisfied with the overall transaction and will purchase again when needed.

  23. Rated 5 out of 5

    Peter

    I took the APC battery out and put the Mighty Max batter in. I took about a minute. A perfect fit

  24. Rated 5 out of 5

    diy1000

    Works

  25. Rated 5 out of 5

    Customer

    I’ve only had this battery for a month, but so far, no issues. The battery was the right size for my UPS, with the correct terminals. The UPS didn’t complain on power-up. Haven’t had to go to battery power for lack of commercial power so I can’t address performance. Will provide update later

  26. Rated 3 out of 5

    Daniel Martinez

    This battery is not completely compatible with BE550G. It has different size battery contacts. I had to spend about an hour, and improvise, to connect the APC to this battery

  27. Rated 5 out of 5

    Eric Parrow

    used in an APC 750 to replace the battery. works well.

  28. Rated 5 out of 5

    Euclid

    Working perfectly in my old APC UPS!

  29. Rated 5 out of 5

    Bernie Bridget

    Installed without a hitch and is working perfectly.

  30. Rated 4 out of 5

    John J Stalker

    Seems to work fine although I haven’t had to rely on the UPS yet.

  31. Rated 4 out of 5

    Marvin

    Product came sooner than expected and reached from the East Coast to Los Angeles in three days. The terminals are not as robust as the original APC battery causing the positive terminal to fall off when inserting the battery. After I understood what was happening, I was able to use a tool to make sure the positive cable stayed on and then pushed on the negative terminal once the battery was in the APC case. If the terminals were a little longer or had a different clip I would have given it five stars.

  32. Rated 5 out of 5

    Milkman

    Did the job!

  33. Rated 5 out of 5

    Kev Miz

    Excellent replacement battery for my APC BE550G UPS. Took 1 minute to remove and replace the old battery that was beeping to let me know it was not holding a charge anymore. Connections snap on tight and the fit is accurate.

  34. Rated 5 out of 5

    kaleidoscopekid

    Excellent buy. Perfect replacement so far, despite all the scare-tactics of APC trying to force me into buying an entire new back-up unit. Using in APC ES 550. Shipped fast. Good packaging.

  35. Rated 5 out of 5

    Andi

    A lot less expensive than a whole new battery pack. Ordered 2, they work like original.

  36. Rated 5 out of 5

    KM

    Excellent product, perfect replacement for my UPS battery. Good price, fast service.

  37. Rated 5 out of 5

    BBD

    Works as expected – easy to hook up and works like a charm!

Only logged in customers who have purchased this product may leave a review.

Excellent
Mighty Max Battery
Based on 3156 reviews
Love this Motorcycle Battery, lots of power!
Really good product came very fast
Sofar all is fine.
Great battery at a great price! Fits the Sporty perfectly...
El producto se ve de buena calidad, solo falta probarlo para checar su desempeño.
Great battery for a great price!
Purchased from Amazon to replace our Solar Gate Battery.
- Gate works like New!
The battery works great. Good purchase from Walmart and cheaper than other brands with the same quality.
Worked great. Fast delivery good price
The new Mighty Max battery works perfectly in my atv and I’m very happy with it so far. Highly recommend