---
product_id: 61642503
title: "ML9-12 - 12 Volt 9 AH, F2 Terminal, Rechargeable SLA AGM Battery,Pack of 1"
brand: "mighty max battery"
price: "€ 133.98"
currency: EUR
in_stock: true
reviews_count: 13
category: "Mighty Max Battery"
url: https://www.desertcart.sk/products/61642503-ml9-12-12-volt-9-ah-f2-terminal-rechargeable-sla
store_origin: SK
region: Slovakia
---

# High discharge rate 12V 9Ah powerhouse Maintenance-free AGM tech ML9-12 - 12 Volt 9 AH, F2 Terminal, Rechargeable SLA AGM Battery,Pack of 1

**Brand:** mighty max battery
**Price:** € 133.98
**Availability:** ✅ In Stock

## Summary

> 🔋 Power up like a pro — never settle for less!

## Quick Answers

- **What is this?** ML9-12 - 12 Volt 9 AH, F2 Terminal, Rechargeable SLA AGM Battery,Pack of 1 by mighty max battery
- **How much does it cost?** € 133.98 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/products/61642503-ml9-12-12-volt-9-ah-f2-terminal-rechargeable-sla)

## 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

- • **Universal Compatibility:** Fits seamlessly with APC UPS, electric scooters, fish finders, and more—upgrade without hassle.
- • **Reliable 12V 9Ah Capacity:** Consistent 9.2-9.9Ah output ensures your devices never run out of juice.
- • **Shock & Vibration Resistant:** Built tough to withstand rough handling and extreme temperatures for long-lasting performance.
- • **Cost-Effective OEM Alternative:** Delivers near-OEM performance at a fraction of the price—smart power investment for pros.
- • **Advanced AGM & Valve-Regulated Design:** Leak-proof, maintenance-free, and safe for indoor use—power you can trust anywhere.

## Overview

The ML9-12 is a 12 Volt 9 Ah sealed lead acid rechargeable battery featuring advanced AGM technology and a valve-regulated design for maintenance-free, leak-proof operation. Compact and durable, it offers high discharge rates and shock resistance, making it ideal for UPS systems, electric vehicles, and portable electronics. Trusted by professionals for reliable, cost-effective power with broad device compatibility.

## 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: Testing results, tips and tricks, and my experience with MightyMax - 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.
Review: Perfect fit for an APC 600 UPS. - Good fit for an older APC 600. Mine crapped out one day randomly. Maybe 5 years old on the original battery. Direct replacement, and I don't think you even need any tools to install. Maybe a 5 minute job at most.

## 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 |
| Batteries | 1 12V batteries required. |
| Best Sellers Rank | #11,417 in Health & Household ( See Top 100 in Health & Household ) #10 in 12V Batteries |
| Customer Reviews | 4.5 4.5 out of 5 stars (11,553) |
| Date First Available | January 1, 2010 |
| Item Weight | 5.5 pounds |
| Item model number | ML9-12 |
| Manufacturer | Mighty Max Battery |
| Product Dimensions | 6 x 2.5 x 4 inches |

## 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

![ML9-12 - 12 Volt 9 AH, F2 Terminal, Rechargeable SLA AGM Battery,Pack of 1 - Image 1](https://m.media-amazon.com/images/I/61ETlI4-RLL.jpg)

## Available Options

This product comes in different **Size** options.

## 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

### ⭐⭐⭐⭐⭐ Testing results, tips and tricks, and my experience with MightyMax
*by C***C on June 11, 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.

### ⭐⭐⭐⭐⭐ Perfect fit for an APC 600 UPS.
*by D***S on February 20, 2026*

Good fit for an older APC 600. Mine crapped out one day randomly. Maybe 5 years old on the original battery. Direct replacement, and I don't think you even need any tools to install. Maybe a 5 minute job at most.

### ⭐⭐⭐⭐⭐ ⭐️⭐️⭐️⭐️⭐️ Worked Perfectly to Repair My APC Back-UPS 1500!
*by K***E on January 16, 2026*

I bought two of the Mighty Max Battery 12V 9Ah Replacement SLA Batteries to bring my APC Back-UPS 1500 back to life, and it did exactly what I needed. This is a quality 12 V 9 Ah sealed lead-acid battery with standard F2 terminals that fit my UPS right out of the box. Installation was really straightforward — just swapped in the new battery, and my UPS powered up like new. The battery holds charge well and gives the expected runtime, so I’m confident it’ll keep protecting my gear during outages. The build feels solid, and being maintenance-free is a huge plus. If you’re replacing an old UPS battery and want something dependable that fits without hassling with sizes or adapters, I highly recommend this one. Great value for getting more life out of old equipment. Would definitely buy again!

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*Product available on Desertcart Slovakia*
*Store origin: SK*
*Last updated: 2026-03-08*