---
product_id: 554998652
title: "48-11-1812 12.0AH Replacement for Milwaukee 18V Battery Compatible with Milwaukee 18V Battery 12.0Ah High Output Battery 48-11-1850 48-11-1815 48-11-1860 48-11-1890 48-11-2230 48-11-2830(Red)"
brand: "gerit batt"
price: "R2586"
currency: ZAR
in_stock: true
reviews_count: 8
url: https://www.desertcart.co.za/products/554998652-48-11-1812-12-0ah-replacement-for-milwaukee-18v-battery
store_origin: ZA
region: South Africa
---

# 18V Power Safety Compliant 12.0Ah Capacity 48-11-1812 12.0AH Replacement for Milwaukee 18V Battery Compatible with Milwaukee 18V Battery 12.0Ah High Output Battery 48-11-1850 48-11-1815 48-11-1860 48-11-1890 48-11-2230 48-11-2830(Red)

**Brand:** gerit batt
**Price:** R2586
**Availability:** ✅ In Stock

## Summary

> 🔧 Power Up Your Performance!

## Quick Answers

- **What is this?** 48-11-1812 12.0AH Replacement for Milwaukee 18V Battery Compatible with Milwaukee 18V Battery 12.0Ah High Output Battery 48-11-1850 48-11-1815 48-11-1860 48-11-1890 48-11-2230 48-11-2830(Red) by gerit batt
- **How much does it cost?** R2586 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/554998652-48-11-1812-12-0ah-replacement-for-milwaukee-18v-battery)

## Best For

- gerit batt enthusiasts

## Why This Product

- Trusted gerit batt brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Smart LED Indicators:** Stay informed with real-time power and charging status at your fingertips.
- • **Dedicated Support Team:** Enjoy 30 days money back and 12 months of professional service.
- • **Seamless Compatibility:** Perfectly replaces multiple Milwaukee 18V models for hassle-free upgrades.
- • **Durability Meets Safety:** Engineered to comply with rigorous safety standards for peace of mind.
- • **Unleash Unmatched Power:** Experience the 12.0Ah lithium battery that outlasts the competition.

## Overview

The 48-11-1812 12.0AH Replacement Battery is a high-capacity lithium battery designed for Milwaukee 18V cordless power tools. With a robust 12000mAh capacity and 18V output, it ensures longer run times and enhanced durability. This battery is compatible with various Milwaukee models and features LED indicators for easy monitoring of power levels. Backed by a 30-day money-back guarantee and a 12-month service commitment, it’s the reliable choice for professionals seeking efficiency and safety.

## Description

Full description not available

## Features

- BATTERY DETAILS : Capacity:12000mAh | Voltage: 18V | Battery type: Lithium | Powerful 12.0 Amp Replaces 48-11-1812, 48-11-1850, 48-11-1890 & Compatible with Milwaukee 18V Lithium Battery cordless power tools & chargers(Generic).
- Replacement for Milwaukee 18 Volt Battery : 12000 mAh high capacity Lithium batteries replacement for Milwaukee 18V battery 48-11-1815,48-11-1860,48-11-1852,48-11-1830,48-18-1840, 48-11-1811,48-11-1820,48-11-1822,48-11-1828,48-11-1841,48-11-1850, 48-11-1852,48-11-1865,48-11-1880,48-11-1852.(Sometimes the batteries delivered are red and function the same as purple, so I hope you'll like them.)
- MORE POWERFUL : Featuring an upgraded 12.0Ah lithium battery that runs longer than the 9.0Ah battery, providing long-lasting performance and durability for the tool.Comply with safety testing standards which can help to avoid security problem effectively, protect the tools and your safe.
- BATTERY ASSURANCE : This replacement for milwaukee 18V battery has the same size and function as the original battery. The LED indicators, when the button is pressed, the remaining power or charging status is displayed, allowing you to improve work efficiency.
- SUPPORT SERVICE : All GERIT BATT products offer 30 days money back and 12 months service from purchase date with professional 24/7 service team. Contact us by click the "Ask a question"on the storefront or from "YOUR ORDER" and click the "contact seller".

## Images

![48-11-1812 12.0AH Replacement for Milwaukee 18V Battery Compatible with Milwaukee 18V Battery 12.0Ah High Output Battery 48-11-1850 48-11-1815 48-11-1860 48-11-1890 48-11-2230 48-11-2830(Red) - Image 1](https://m.media-amazon.com/images/I/61lOgGuZgGL.jpg)
![48-11-1812 12.0AH Replacement for Milwaukee 18V Battery Compatible with Milwaukee 18V Battery 12.0Ah High Output Battery 48-11-1850 48-11-1815 48-11-1860 48-11-1890 48-11-2230 48-11-2830(Red) - Image 2](https://m.media-amazon.com/images/I/619CSb-y7sL.jpg)
![48-11-1812 12.0AH Replacement for Milwaukee 18V Battery Compatible with Milwaukee 18V Battery 12.0Ah High Output Battery 48-11-1850 48-11-1815 48-11-1860 48-11-1890 48-11-2230 48-11-2830(Red) - Image 3](https://m.media-amazon.com/images/I/718ivOpUfqL.jpg)
![48-11-1812 12.0AH Replacement for Milwaukee 18V Battery Compatible with Milwaukee 18V Battery 12.0Ah High Output Battery 48-11-1850 48-11-1815 48-11-1860 48-11-1890 48-11-2230 48-11-2830(Red) - Image 4](https://m.media-amazon.com/images/I/61dvQj8nppL.jpg)
![48-11-1812 12.0AH Replacement for Milwaukee 18V Battery Compatible with Milwaukee 18V Battery 12.0Ah High Output Battery 48-11-1850 48-11-1815 48-11-1860 48-11-1890 48-11-2230 48-11-2830(Red) - Image 5](https://m.media-amazon.com/images/I/71Dhf05TtJL.jpg)

## Questions & Answers

**Q: Can i use b & d nicad charger to charge this nimh battery or i have to buy a nimh compatible charger?**
A: It depends on the type of NiCd charger your using. The older (and less expensive chargers) are timed chargers. They usually run for a specific amount of time and shut off.  The problem with these is, they may undercharge the NiMh battery (NiMH batteries have higher capacities than NiCD batteries and in one of these chargers, may  take as much as 4 days to charge properly.)  This won't harm a NiMH battery, but the NiMH battery won't be fully charged since the timer will have stopped the charge cycle too soon.  
The other type of charger is a rapid charger.  (For example, if the charger is designed to charge NiCd battery in two hours, it will probably overcharge NiMH batteries.    This will be apparent if the batteries get very hot during the charge cycle. (They will get warm under normal charging). One way to tell is, if they get too hot to hold for 20 minutes or more, it is going to shorten their life.
It's always best to consider using the proper charger for each battery type, to get the longest life from your battery. A good NiMH "smart charger" is designed to detect when a NiMH battery is fully charged and then shut off or go into a trickle charge mode.  And you should be able to find one for just a little more than a standard NiCd charger.

**Q: Can the B & D charger be used to charge this battery?**
A: I shoould make sure your charger model,some charger just be used for one model,but some could be used for many kind of batteries.

**Q: My current hpb-18 battery has 2 contacter bars, the gerit batt has 3 bars - are they interchangeable**
A: Yes, they are interchangeable.

**Q: why nimh instead nicad?**
A: NIMH is thought to be a better chemistry for batteries because of no memory effect that is present
with NICAD batteries.

## Customer Reviews

### ⭐ 1.0 out of 5 stars







  
  
    Proof life is a Comedy.
  

*by J***. on Reviewed in the United States on April 30, 2024*

Because this battery was a joke.  Didn't even last a month.  Now it doesn't charge.  I should of kept my money and bought an actual milwaukee long life battery.Lesson learned.  Don't make the mistake I did.

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Battery
  

*by B***D on Reviewed in the United States on April 8, 2024*

Well made, seems to work well so far.

### ⭐ 1.0 out of 5 stars







  
  
    Back They GO!
  

*by J***F on Reviewed in the United States on September 21, 2023*

Like many folks I was looking for an affordable replacement battery for my Milwaukee M-18 tools. Many of my Milwaukee OEM batteries have gone dead shortly after the three-year warranty expired. Why pay a silly high price for replacement junk Milwaukee OEM batteries when they fail in such a short time. Even though these are half the cost of Milwaukee batteries they were a disappointment. When they arrived, I was taken how much smaller they were than the OEM Milwaukee’s. OEM Milwaukee 12 ma battery and Gerit 12 ma side by side in photo. I charged them overnight and used the next morning with a blower. The first one went dead in less than half the time of the typical Milwaukee. The second Gerit battery failed about as fast as the first. I like Milwaukee M-18 tools but their silly expensive OEM batteries are junk. The search for a suitable replacement continues.

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**Shop now:** [https://www.desertcart.co.za/products/554998652-48-11-1812-12-0ah-replacement-for-milwaukee-18v-battery](https://www.desertcart.co.za/products/554998652-48-11-1812-12-0ah-replacement-for-milwaukee-18v-battery)

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*Product available on Desertcart South Africa*
*Store origin: ZA*
*Last updated: 2026-03-09*