--- product_id: 379757478 title: "Mighty Max Battery ML9-12 12 V 9 Ah Rechargeable SLA Battery" brand: "mighty max battery" price: "€ 37.96" currency: EUR in_stock: false reviews_count: 5 category: "Mighty Max Battery" url: https://www.desertcart.pt/products/379757478-mighty-max-battery-ml9-12-12-v-9-ah-rechargeable store_origin: PT region: Portugal --- # AGM tech for leak-free reliability 12V 9Ah power punch Shock & vibration resistant build Mighty Max Battery ML9-12 12 V 9 Ah Rechargeable SLA Battery **Brand:** mighty max battery **Price:** € 37.96 **Availability:** ❌ Out of Stock ## Summary > 🔋 Power up your gear with the Mighty Max—never get caught powerless again! ## Quick Answers - **What is this?** Mighty Max Battery ML9-12 12 V 9 Ah Rechargeable SLA Battery by mighty max battery - **How much does it cost?** € 37.96 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/379757478-mighty-max-battery-ml9-12-12-v-9-ah-rechargeable) ## Best For - mighty max battery enthusiasts ## Why This Product - Trusted mighty max battery brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Power That Lasts:** Heavy-duty calcium-alloy grid ensures long service life in both float and cyclic use. - • **Versatile Compatibility:** Fits a wide range of devices from electric scooters to UPS systems and portable tools. - • **Compact & Ready to Mount:** Sleek 5.94 x 2.56 x 3.94 inch size fits any position without hassle. - • **Maintenance-Free Freedom:** Valve-regulated AGM design means zero leaks and no upkeep—just plug and play. - • **Built Tough for Any Environment:** Resists shocks, vibrations, and performs in extreme temperatures—indoors or out. ## Overview The Mighty Max ML9-12 is a 12V 9Ah sealed lead acid rechargeable battery featuring advanced AGM technology and a heavy-duty calcium-alloy grid. Designed for maintenance-free, leak-proof operation, it delivers reliable power across diverse applications including UPS systems, electric vehicles, and portable electronics. Compact, shock-resistant, and temperature tolerant, it’s engineered to keep your essential devices running smoothly wherever you go. ## Description 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 Review: Great value, great fit, super happy! - August 18, 2026 Bought these for my Eaton 5S (SS) 1000 and they fit like a charm. 4 more amp hours compared to stock and they were infinitely cheaper! Review: Buena - Funcionó, igual se me estuvo apagando unos días el no break solo, pero ya esto debe ser otro problema ## Features - Ml9-12 Sla Is A 12V 9Ah Sealed Lead Acid (Sla) Rechargeable Maintenance Free Battery - Amperage 9 Dimensions 5.94 Inches X 2.56 Inches X 3.94 Inches Terminal F2 Listing Is For The Battery Only No Wire Harness Or Mounting Accessories Included - Compatibility Aqua Vu Marcum Vexilar 12Volt Vexilar Fl-8Se Genz Pack Ion Block Rocker Ups Audio Hr-1234W-F2 Apc Be550G Vexilar Ip1212 Fl-12 Ice Pro Apc Back-Ups 600 Bn600 Marcum Lx-5 Ice Fishing Sonar Razor Ecosmart Metro Electric Scooter Vexilar Up2012D Fl-20 Ultra Pack Vision Cp1272 Razor E200 / E200S / E225 / E300 / E300S / E325 Geek Squad 875Va Ups Cyberpower Rb1290 Ups Apc Back-Ups Es Be725Bb Portable Fish Finder 570 Leoch Djw12-9 0 T2 Razor Mx350 Mx400 Electric Dirt Bike - Rechargeable Battery That Can Be Mounted In Any Position Resists Shocks And Vibration Long Lasting High Performance In High And Low Temperatures ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00K8V2Y8W | | Amperage | 9 Amps | | Antenna Location | Power Tool | | Battery Capacity | 9 | | Battery Cell Type | Sealed Lead Acid | | Battery Weight | 5.5 Pounds | | Battery capacity | 9 | | Battery cell composition | Sealed Lead Acid | | Brand | Mighty Max Battery | | Compatible Phone Models | Galaxy | | Customer Reviews | 4.5 out of 5 stars 11,335 Reviews | | Global Trade Identification Number | 00785123605317 | | Included Components | ML9-12 (1) | | Item Dimensions | 15.2 x 6.4 x 10.2 centimeters | | Item Weight | 2.5 kg | | Manufacturer | Mighty Max Battery | | Model Name | ML9-12241 | | Model Number | ML9-12 | | Number of Batteries | 1 12V batteries required. | | Number of batteries | 1 12V batteries required. | | Recommended uses for product | Power Tool | | Reusability | Rechargeable | | UPC | 785123605317 860000524988 | | Unit Count | 1 Count | | Unit count | 1 Count | | Voltage | 12 | ## Product Details - **Battery capacity:** 9 - **Battery cell composition:** Sealed Lead Acid - **Brand:** Mighty Max Battery - **Number of batteries:** 1 12V batteries required. - **Recommended uses for product:** Power Tool ## Images ![Mighty Max Battery ML9-12 12 V 9 Ah Rechargeable SLA Battery - Image 1](https://m.media-amazon.com/images/I/61ETlI4-RLL.jpg) ![Mighty Max Battery ML9-12 12 V 9 Ah Rechargeable SLA Battery - Image 2](https://m.media-amazon.com/images/I/61G-0n-mhML.jpg) ![Mighty Max Battery ML9-12 12 V 9 Ah Rechargeable SLA Battery - Image 3](https://m.media-amazon.com/images/I/714tC6aO+VL.jpg) ![Mighty Max Battery ML9-12 12 V 9 Ah Rechargeable SLA Battery - Image 4](https://m.media-amazon.com/images/I/616aGOVqooL.jpg) ![Mighty Max Battery ML9-12 12 V 9 Ah Rechargeable SLA Battery - Image 5](https://m.media-amazon.com/images/I/71pxHDt8r8L.jpg) ## Questions & Answers **Q: Would the battery minder be a good choice for a charger?** A: I do it. The typical BatteryMINDer like the Model 1510 or the Model 2012 only puts out between 1.5 amps and 2 amps. That's just fine for charging and maintaining a 9Ah battery. **Q: Is this the correct battery for the cyber power Lx1000g?** A: This will work as a replacement for the RB1290 battery, same size and 9A 12 V. They work well in Cyber power UPS's just not certified (OEM) by Cyber power. I have several models of Cyber power UPS's and they work in them but I do not have your model. Your model calls for the RB1290 the same as mine. **Q: Does this fit apc bn600** A: According to the specifications of the BN600, this battery will work with it. The terminals are the same. The Mighty Max is rated at 9 Ah rather than the 8 Ah specified, but this simply gives more capacity. One dimension listing shows the specified replacement at 3.8 inches high, while the Mighty Max measures 3.94 high measured from base to top of terminals, so while it might be a snug fit, I strongly suspect this is simply sloppy measuring on someone's part and the fit will not be any problem. **Q: Will this work for a cpap machine?** A: Yes and no. Please let me explain. Your cPap machine requires 12 volts so it will work in that regard, however the power supply that comes with my machine is capable of over 6 amps. So the remaining question is for how long ? I would take a wild guess and say 3 maybe 4 hours but without knowing how much your machine draws (current wise) it is simply a guess. If you can look up the specifications for your machine you can get a much better idea. I am sorry I cannot be more helpful. Have a great day! ## Customer Reviews ### ⭐⭐⭐⭐⭐ Great value, great fit, super happy! *by J***B on 18 August 2026* August 18, 2026 Bought these for my Eaton 5S (SS) 1000 and they fit like a charm. 4 more amp hours compared to stock and they were infinitely cheaper! ### ⭐⭐⭐⭐⭐ Buena *by L***. on 15 July 2026* Funcionó, igual se me estuvo apagando unos días el no break solo, pero ya esto debe ser otro problema ### ⭐⭐⭐⭐⭐ Testing results, tips and tricks, and my experience with MightyMax *by C***C on 11 June 2025* I am using 24 of these batteries at this point and about to invest in 48 more so. I have tons of equipment, and anything worth a darn is behind a UPS for clean power and to survive the occasional blip in power. In the last decade, I literally haven't replaced a power supply in anything at all except a TV once because I took a surge through the cable line I forgot to protect. The clean sinewave coming off of a good UPS ensures me maximum life from power supplies and other delicate components, protects my equipment from surges, and at the heart of it all is the MightyMax battery. I've been using the ML9-12 for all my UPS 650, 600, Network 40, and similar gear. I even build my own packs for larger installs like my 2200s and 1500s. MightyMax is the best battery money can buy, performing well over it's cost point. Don't buy expensive batteries from the UPS manufacturers. Yes, those batteries are great, but you can save money and not skimp on performance using MightyMax batteries. I have done extensive testing, being I'm a geek like that, and here is what I have found: 1. They really are 9AH, just a tad over. With a lot of testing, I am getting on average 9.6AH out of these batteries. I have never gotten under 9.2 and never more than 9.9. I have had other batteries claim to by 9AH and I get mid-8s which is horrible and deceptive. Not with MightyMax, whatever it says they are, they are. 2. They age really well. These batteries age well for their price. Realistically most cheap UPS replacement batteries last a year to 18 months or so and you replace them. The originals usually last around 4 years "on the shelf" meaning they rarely if ever actually get used. With no more than 1 deep discharge per year, you'll get right near that 4 years. The MightyMax batteries last around 3 years with the same "on the shelf" type usage but they are 1/3rd the price so I'm making money with "on the shelf" usage. 3. In areas more prone to outages that may cause deep discharges (like where I live), the OEM batteries last no more than 2 years when deeply discharged 6+ times per year. Sometimes the OEMs only last 18 months. The MightyMax batteries last 18 months or a bit more like this so they aren't quite as strong as the OEM batteries but they are close enough that at 1/3rd the price it is totally worth it. 4. These batteries can dump serious power. They handle a great discharge rate (C Rate) right on par with OEM batteries, in fact, the MightyMax actually fair a LITTLE better in this aspect, however not enough to write home about, but again, 1/3rd the price.... you seeing the pattern? Tips and Tricks: 1. The internals of the older APC UPS 600 are actually better than the internals of the new 650s IMHO. The difference from being a 650 or a 600? The battery realistically. Use this 9AH battery in an APC UPS 600 and magically you've got a 650. This battery fits perfectly in the 600 which usually uses a 7AH battery. I haven't seen any issue with Power Chute or anything reporting incorrectly and the charge rates seem to be relatively consistent. 2. The Network 40 ACP UPS has a little riser in the bottom (it's part of the molded plastic). If you cut that riser out you can fit one of these ML9-12 batteries and bingo, you have a APC 650! The battery charge rate is SLIGHTLY slower than the 650 from the 4 I measured but the parts look identical and I have seen no adverse effects during a power outage and run time is consistent. 3. If you have a battery that got a few deep discharges and seems to be shot, you can try using a desulfate mode on a small charger to revive the battery. I've done this with a few batteries that seem to have prematurely died before their time and it works in about a quarter of the cases. Since these batteries charge low and slow inside a UPS, sit topped off all the time, and always have a charge, they don't sulfate much, so this doesn't work all the time, but every once in a while you can revive one the ups is complaining about. These revived batteries seem to last another 6 months or so in my testing. OVERALL: Absolutely worth it. Go with MightyMax batteries every time. ## Frequently Bought Together - ML9-12 - 12 Volt 9 AH, F2 Terminal, Rechargeable SLA AGM Battery,Pack of 1 - ML7-12 - 12 VOLT 7.2 AH SLA BATTERY - Mighty Max Battery brand product, black - ForEverlast Solar Panel, Deer Feeder Battery Charger, For Outdoor Use With Mounting Bracket --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.pt/products/379757478-mighty-max-battery-ml9-12-12-v-9-ah-rechargeable](https://www.desertcart.pt/products/379757478-mighty-max-battery-ml9-12-12-v-9-ah-rechargeable) --- *Product available on Desertcart Portugal* *Store origin: PT* *Last updated: 2026-10-02*