---
product_id: 14752449
title: "Mighty Max Battery 12V 8Ah UPS Battery Replaces 7Ah 28W BB Battery SH1228W - 2 Pack"
brand: "mighty max battery"
price: "$121"
currency: NZD
in_stock: true
reviews_count: 8
url: https://www.desertcart.nz/products/14752449-mighty-max-battery-12v-8ah-ups-battery-replaces-7ah-28w
store_origin: NZ
region: New Zealand
---

# 12V 8Ah power punch Wide temp resilience UL Certified safety Mighty Max Battery 12V 8Ah UPS Battery Replaces 7Ah 28W BB Battery SH1228W - 2 Pack

**Brand:** mighty max battery
**Price:** $121
**Availability:** ✅ In Stock

## Summary

> 🔋 Stay powered, stay unstoppable – never miss a beat!

## Quick Answers

- **What is this?** Mighty Max Battery 12V 8Ah UPS Battery Replaces 7Ah 28W BB Battery SH1228W - 2 Pack by mighty max battery
- **How much does it cost?** $121 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nz](https://www.desertcart.nz/products/14752449-mighty-max-battery-12v-8ah-ups-battery-replaces-7ah-28w)

## 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

- • **All-Weather Durability:** Operates flawlessly across extreme temperature ranges
- • **Versatile Installation:** Mountable in any position with shock and vibration resistance
- • **Power-packed Performance:** Reliable 12V 8Ah capacity for uninterrupted UPS backup
- • **Certified Safety Assurance:** UL Certified for peace of mind in critical power needs
- • **Maintenance-Free Convenience:** Sealed Lead Acid design means zero upkeep hassle

## Overview

The Mighty Max ML8-12 is a sealed, maintenance-free 12V 8Ah SLA battery designed for reliable UPS backup. UL Certified and engineered for high discharge rates, it delivers consistent power across wide temperature ranges. Compact and shock-resistant, this 2-pack ensures long-lasting performance with hassle-free installation.

## Description

Mighty Max Battery12V 8Ah UPS Battery Replaces 7Ah 28W BB Battery SH1228W - 2 Pack

## Features

- ML8-12 SLA is a 12V 8AH 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: F1. 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

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Mighty Max Battery |
| Brand | Mighty Max Battery |
| Model | ML8-12MP211662 |
| Item Weight | 10 pounds |
| Product Dimensions | 5.94 x 2.56 x 4.02 inches |
| Country of Origin | Thailand |
| Item model number | ML8-12MP211662 |
| Batteries | 2 12V batteries required. (included) |
| Manufacturer Part Number | ML8-12MP2 |
| Amperage | 8 Amps |
| Voltage | 12 Volts |
| Wattage | 8000 milliamp_hours |

## Product Details

- **Number of Batteries:** 2 12V batteries required. (included)
- **Brand:** Mighty Max Battery
- **Battery Cell Composition:** Lead Acid
- **Battery Capacity:** 8 Amp Hours
- **Recommended Uses For Product:** Power Tool

## Images

![Mighty Max Battery 12V 8Ah UPS Battery Replaces 7Ah 28W BB Battery SH1228W - 2 Pack - Image 1](https://m.media-amazon.com/images/I/61mPZ3ekkUL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Brought my CyberPower 1350AVR back to life!
*by P***. on November 10, 2018*

Update July 31, 2019: The batteries and UPS are still going strong but guess what? Another 1350AVR died on me 2 days ago, exact same symptoms. I came here to order another set of replacement batteries to fix the latest dead UPS and figured I’d update my review. You’re welcome! 😁My CyberPower 1350AVR died...power light started flashing and there was a clicking noise. I found a YouTube video that showed the same problem and exactly how to replace the batteries. Search YouTube for “Replacing or rebuilding the battery pack in a CyberPower 1285AVR UPS”. The 1285AVR looks exactly the same as the 1350AVR. Replacing the two batteries was easy peasy; the UPS is working normally and reports 100% battery capacity. If the batteries die an early death I’ll update my review.

### ⭐⭐⭐⭐⭐ Inexpensive replacements to the unknown "BB" brand in my Cyberpower 1350AVR UPS
*by E***G on November 8, 2017*

Update Jan 2021: Finally my first MightMax battery (from Oct 2017) died. Not bad considering a $35 battery pair lasted 3yrs+. Granted, they were mostly running on STANDBY, I never had an extended blackout lasting more than 10 seconds - because I have an automatic whole-house standby generator that comes on after 10 seconds. So while there is a NEWER model (9Ah instead of 8Ah, for $5 more - effectively increasing backup run time by 28% from the original 7Ah battery in my CyberPower 1350VA, CST1300AL), these will do just fine for my purposes.Top tip: to keep track of things, if you have a label printer, stick on the install date (maybe even model number) of your battery on the outside of the unit so you know from a glance how long it has been since your last battery change.Also; one thing to keep in mind, over the years, you may see improved battery capacity (the "Ah" rating going up for the same sized battery), but it does not mean it will make your UPS produce higher watts. It will only make it run slightly longer when on battery power.Updated review Mar 2019: I'm happy to report everything is working fine. Another couple of my CyberPower UPS (1350VA, CST1300AL - with original batteries) have died since and I've bought more of these to replace them - most recent one being just a week ago. None of the Mighty Max batteries (including my original Oct 2017 purchase) are having any issues so far, so I'm very happy with the purchase and will pretty much use my UPS's indefinitely by simply swapping dead batteries out when they go out. I have 3 of these UPS models in my home and all 3 have now been replaced with Mighty Max batteries.Original review: Oct 2017: My Cyberpower 1350AVR died and rather than buying a new UPS unit, swapping out the battery saved me a bunch. The factory battery was BB Battery. I have never heard of BB Battery! Tell me Yuasa, Panasonic, sure. So I figured Mighty Max is probably the same level as BB. It even has a 1Ah advantage! I kept the original battery intact until these Mighty Max's arrived. I pretty much disassembled the twin battery assembly and immediately reassembled it back in the same way. The adhesive sticky tape that held the 2 batteries together was weak, so I replaced it with some 3M packaging tape, and put the original tape pull tab back over it. I can't say I've tested the battery run time, but the battery meter shows full now, so I guess I'm happy with it. Will have to wait for an extended blackout to know if these are as good as the originals.

### ⭐⭐⭐⭐⭐ Good Battery but Be Careful
*by E***S on March 24, 2024*

The batteries work fine but if you are using them stacked in a UPS, be extra careful to note how the wires are connected before separating the old batteries.

## Frequently Bought Together

- Mighty Max Battery 12V 8Ah UPS Battery Replaces 7Ah 28W BB Battery SH1228W - 2 Pack
- ExpertPower 12v 9ah Sealed Lead Acid Battery with F2 Terminals (.250")/2 Pack

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*Product available on Desertcart New Zealand*
*Store origin: NZ*
*Last updated: 2026-02-22*