---
product_id: 630610614
title: "Heimerdinger 4000mAh Replacement Battery and Charger for Makita 18V Battery Compatible with BL1840B for Cordless Power Tools"
brand: "heimerdinger"
price: "€ 87.89"
currency: EUR
in_stock: true
reviews_count: 8
category: "Heimerdinger"
url: https://www.desertcart.fr/products/630610614-heimerdinger-4000mah-replacement-battery-and-charger-for-makita-18v-battery
store_origin: FR
region: France
---

# 18V stable voltage output 4000mAh high-capacity power Advanced current & safety protection Heimerdinger 4000mAh Replacement Battery and Charger for Makita 18V Battery Compatible with BL1840B for Cordless Power Tools

**Brand:** heimerdinger
**Price:** € 87.89
**Availability:** ✅ In Stock

## Summary

> 🔋 Power up your projects with unstoppable energy and safety!

## Quick Answers

- **What is this?** Heimerdinger 4000mAh Replacement Battery and Charger for Makita 18V Battery Compatible with BL1840B for Cordless Power Tools by heimerdinger
- **How much does it cost?** € 87.89 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.fr](https://www.desertcart.fr/products/630610614-heimerdinger-4000mah-replacement-battery-and-charger-for-makita-18v-battery)

## Best For

- heimerdinger enthusiasts

## Why This Product

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

## Key Features

- • **Next-Level Safety Tech:** Built-in over-discharge, overload, and short-circuit protection keeps your tools and workspace safe.
- • **Complete Power Solution:** Includes a dedicated charger optimized for Heimerdinger batteries—fast, efficient, and ready to go.
- • **Seamless 18V Compatibility:** Perfectly fits Makita 18V LXT tools including BL1840B, BL1850B, and more for versatile use.
- • **Certified Quality Assurance:** CE/FCC/RoHS certifications guarantee premium reliability and peace of mind.
- • **Extended Runtime Powerhouse:** Upgraded 4000mAh capacity delivers longer work sessions without interruption.

## Overview

The Heimerdinger 4000mAh Replacement Battery and Charger is a premium lithium-ion power source designed for Makita 18V cordless tools. Featuring advanced current protection and multiple safety certifications, it ensures longer runtime, stable voltage, and reliable performance across a wide range of power tools. This combo pack includes a dedicated charger optimized for Heimerdinger batteries, delivering a safe and efficient charging experience.

## Description

【High-quality battery】Upgraded 4000mAh battery which offers longer run time than the original one. Input:100-240V50-60Hz,0.8AOutput:21V,0.75AThe Heimerdinger 4000mAh Replacement Battery and Charger is a high-performance power solution designed for 18V cordless tools, ensuring seamless compatibility with models like BL1840B, BL1850B, and more. Crafted with premium lithium-ion cells, this battery delivers long-lasting durability and stable power output—never made from recycled or low-quality materials.Featuring advanced current protection technology, it prevents overheating, over-discharge, and short circuits, while CE/FCC/RoHS certifications guarantee safety. Note: The included charger is not compatible with M@kita’s original chargers but pairs perfectly with Heimerdinger batteries. Power your drills, saws, blowers, and other 18V LXT tools with reliable energy—no compromises!

Review: Good - Arrived on time. Works great.
Review: Worth its price - Well made product

## Features

- Specification:Battery type: Increase current protection Lithium | Voltage: 18V | Capacity: 4000mAh *1Pack+1 Charger | Brand new high-quality power tool battery.
- Applicable Model:Compatible with 18V LXT Cordless Power Tool, BL1860B,BL1850B, BL1840B, BL1830B...
- Increase Current Protection:Each battery cell increases current protection, compared with ordinary batteries, it can prevent common battery problems such as overheating/explosion/power instability！
- Safe & Reliable:CE/FCC/RoHS Certified, built-in over-discharge, overload and short-circuit protection feature.
- Compatible with Cordless Power Tools:Such as your Makita 18V Drill / Circular Saw / Blower / Driver / Impact Wrench / Hedge Trimmer / Pipe Threader / Braking Grinder / Recip Saw / Band Saw / Hackzall / Chainsaw / Jig Saw / Nailer / Drywall Screw Gun / Rotary Hammer and so on ..

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0CQF9T7Z2 |
| Batteries | 1 Lithium Ion batteries required. (included) |
| Best Sellers Rank | #219,620 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #2,188 in Cordless Tool Battery Packs |
| Customer Reviews | 4.3 4.3 out of 5 stars (57) |
| Date First Available | December 16, 2023 |
| Item Weight | 1.32 pounds |
| Item model number | YD-CFJ21-10 |
| Manufacturer | Heimerdinger |
| Package Dimensions | 8.15 x 6.22 x 4.45 inches |

## Product Details

- **Battery Capacity:** 4000 Milliamp Hours
- **Battery Cell Composition:** Lithium Ion
- **Brand:** Heimerdinger
- **Number of Batteries:** 1 Lithium Ion batteries required. (included)
- **Recommended Uses For Product:** Cordless Power Tools, Heimerdinger Cordless Power Tools

## Images

![Heimerdinger 4000mAh Replacement Battery and Charger for Makita 18V Battery Compatible with BL1840B for Cordless Power Tools - Image 1](https://m.media-amazon.com/images/I/61SE5y4-6gL.jpg)
![Heimerdinger 4000mAh Replacement Battery and Charger for Makita 18V Battery Compatible with BL1840B for Cordless Power Tools - Image 2](https://m.media-amazon.com/images/I/71-6FdpnQeL.jpg)
![Heimerdinger 4000mAh Replacement Battery and Charger for Makita 18V Battery Compatible with BL1840B for Cordless Power Tools - Image 3](https://m.media-amazon.com/images/I/71FLiNeqW-L.jpg)
![Heimerdinger 4000mAh Replacement Battery and Charger for Makita 18V Battery Compatible with BL1840B for Cordless Power Tools - Image 4](https://m.media-amazon.com/images/I/71K-jaionCL.jpg)
![Heimerdinger 4000mAh Replacement Battery and Charger for Makita 18V Battery Compatible with BL1840B for Cordless Power Tools - Image 5](https://m.media-amazon.com/images/I/71ZX6m68QEL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Good
*by A***R on June 26, 2025*

Arrived on time. Works great.

### ⭐⭐⭐⭐⭐ Worth its price
*by E***T on December 23, 2025*

Well made product

### ⭐⭐⭐⭐⭐ Work perfect
*by M***E on January 22, 2025*

Great product for the price.

## Frequently Bought Together

- Heimerdinger 4.0Ah Replacement Battery and Charger for Makita 18V Battery Compatible with BL1840B for Cordless Power Tools
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- Brushless Cordless Metal Shear for Makita 18V Battery,Heavy Duty Electric Scissors for Cutting Metal/Iron,Stainless Steel,Carpet and Cardboard-Variable Speed (Cordless Metal Shear)

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*Product available on Desertcart France*
*Store origin: FR*
*Last updated: 2026-01-30*