---
product_id: 58646849
title: "3.0Ah 12V Max Replacement Battery for Dremel B812-03 B812-02 8200 8220 8300 B812-01 Rotary Oscillating Cordless Tools for Dremel 12V Battery"
brand: "hanaix"
price: "$77"
currency: NZD
in_stock: true
reviews_count: 8
category: "Hanaix"
url: https://www.desertcart.nz/products/58646849-3-0ah-12v-max-replacement-battery-for-dremel-b812-03
store_origin: NZ
region: New Zealand
---

# 12V max power output 3.0Ah high capacity Quick charge compatible 3.0Ah 12V Max Replacement Battery for Dremel B812-03 B812-02 8200 8220 8300 B812-01 Rotary Oscillating Cordless Tools for Dremel 12V Battery

**Brand:** hanaix
**Price:** $77
**Availability:** ✅ In Stock

## Summary

> 🔋 Power up your Dremel, never miss a beat!

## Quick Answers

- **What is this?** 3.0Ah 12V Max Replacement Battery for Dremel B812-03 B812-02 8200 8220 8300 B812-01 Rotary Oscillating Cordless Tools for Dremel 12V Battery by hanaix
- **How much does it cost?** $77 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/58646849-3-0ah-12v-max-replacement-battery-for-dremel-b812-03)

## Best For

- hanaix enthusiasts

## Why This Product

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

## Key Features

- • **Durable & Reliable:** No memory effect and minimal self-discharge keep your battery ready when you are.
- • **Lightweight & Portable:** Compact design reduces fatigue, making it easy to carry and swap on the go.
- • **Power Through Projects:** 3.0Ah capacity delivers extended runtime for uninterrupted work sessions.
- • **Seamless Compatibility:** 100% fits Dremel B812-01/02/03, 8200, 8220 & 8300 tools—no compromises.
- • **Fast Recharge, Less Downtime:** Supports quick charging with original charger for rapid tool readiness.

## Overview

This 3.0Ah 12V Max rechargeable lithium-ion battery is a professional-grade replacement for multiple Dremel rotary and oscillating tools. Engineered for long-lasting performance with quick charge capability, it ensures seamless compatibility and durability without memory loss or self-discharge. Certified to meet strict safety standards, it’s the perfect upgrade to keep your tools running strong and your projects on track.

## Description

Buy Hanaix 3.0Ah 12V Max Replacement Battery for Dremel B812-03 B812-02 8200 8220 8300 B812-01 Rotary Oscillating Cordless Tools for Dremel 12V Battery: Battery Packs - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: Effectively powers a Dremel 8200 - Dremel 8200 - Battery fit well into charger and charged fully (in maybe an hour or two). - Battery was easy to remove from the charger - Battery fit in to the Dremel body without issue - Unit seems to run well with this battery. I haven't completely discharged it yet, but it's working great thus far. - Note: It was difficult to remove the battery from the unit on the first go. I had to gently use a pair of channel locks to get sufficient grip, but it has loosened up to the point where I can remove it by hand now with a little effort. - All-in-all, I'm giving this device 5 stars because it effectively powers my Dremel 8200, and Dremel no longer makes a battery for this model (I called them).
Review: Shockingly good - Works great and allowed me to find my mussing original within minutes of opening box....

## Features

- Battery Type: rechargeable, Voltage: 12 Volts, Capacity: 3000mAh/3.0Ah. 100% compatible with the originals.
- Quick charge with original charger and power adapter, professional replacement 12V battery for Dremel B812-01, B812-02, B812-03. Compatible with Dremel 8200 8220 Rotary Tools, 8300 Oscillating Tool.
- No memory and virtually no self-discharge. Can be charged or discharged as needed without loss of capacity. Long-lasting performance and durability.
- Compact and light weight batteries for easy transport, efficiently reduce your tiredness.Batteries are CE, FCC, PSE, RoHS certified. Reach or exceed OEM product criterion.
- 1 Month full refund,12months part refund or replacement for a new battery if there is any quality problem.24 hours warmly service.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0727VJWDY |
| Batteries | 1 Lithium Ion batteries required. (included) |
| Best Sellers Rank | #29,141 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #225 in Cordless Tool Battery Packs |
| Customer Reviews | 4.4 4.4 out of 5 stars (434) |
| Date First Available | September 6, 2017 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 6 ounces |
| Manufacturer | Hanaix |
| Product Dimensions | 3.31 x 1.85 x 1.88 inches |

## Product Details

- **Battery Capacity:** 3000 Milliampere Hour (mAh)
- **Battery Cell Composition:** Other Than Listed
- **Brand:** Hanaix
- **Number of Batteries:** 1 Lithium Ion batteries required. (included)
- **Recommended Uses For Product:** Vacuum Cleaner

## Images

![3.0Ah 12V Max Replacement Battery for Dremel B812-03 B812-02 8200 8220 8300 B812-01 Rotary Oscillating Cordless Tools for Dremel 12V Battery - Image 1](https://m.media-amazon.com/images/I/51PrrHUjulL.jpg)

## Questions & Answers

**Q: Can I charge it with 220 V??**
A: Don't think so. Charging calls for 110v in the charger (US) Would check voltage requirement.

**Q: Is this a good replacement for dremel B814-01?**
A: I is a great replacement for my Dremel battery pack No. 855-02.

**Q: Is this compatible with Dremel model 8260?**
A: I have the Dremel model 8260. This battery does NOT work in this model of Dremel. It fits the charger ok and seems to charge alright but the tool absolutely will not turn on with this battery installed and charged. The info on the original battery lists the battery # as B816-01. That is not the # listed on this Hanaix.

**Q: does this work with Dremel 8250 tool?**
A: This battery works great for the Dremel 8220 that I have. You might want to check their website and ask if its compatible with the 8250. From what I've seen it won't work. Hope this helps

## Customer Reviews

### ⭐⭐⭐⭐⭐ Effectively powers a Dremel 8200
*by A***R on March 21, 2025*

Dremel 8200 - Battery fit well into charger and charged fully (in maybe an hour or two). - Battery was easy to remove from the charger - Battery fit in to the Dremel body without issue - Unit seems to run well with this battery. I haven't completely discharged it yet, but it's working great thus far. - Note: It was difficult to remove the battery from the unit on the first go. I had to gently use a pair of channel locks to get sufficient grip, but it has loosened up to the point where I can remove it by hand now with a little effort. - All-in-all, I'm giving this device 5 stars because it effectively powers my Dremel 8200, and Dremel no longer makes a battery for this model (I called them).

### ⭐⭐⭐⭐⭐ Shockingly good
*by R***B on June 5, 2025*

Works great and allowed me to find my mussing original within minutes of opening box....

### ⭐⭐⭐⭐⭐ More battery life at half the price
*by J***L on June 29, 2020*

Works as expected in my Dremel 8220. Having a spare battery means that I don't have to pause for recharge. This battery has longer running time than the standard Dremel-supplied battery, and costs less than half what the Dremel part costs. With both batteries fully charged, I start with the Dremel battery. Run it empty, put it on the charger, and install this new, longer-life battery. By the time this one runs out, the Dremel battery is fully charged and I can continue carving. The Dremel battery will run out before this one is fully charged, but by then I've done an hour and a half or two hours of carving. Time to take a break. If you have one of the battery powered Dremels, you need a spare battery. Rather than springing for the expensive Dremel part, buy yourself two of these. I wish I had bought two of them, 'cause then I could carve indefinitely without having to pause.

## Frequently Bought Together

- Hanaix 3.0Ah 12V Max Replacement Battery for Dremel B812-03 B812-02 8200 8220 8300 B812-01 Rotary Oscillating Cordless Tools for Dremel 12V Battery
- Dremel 8250-5 12V Lithium-Ion Variable Speed Cordless Rotary Tool with Brushless Motor - 5 Rotary Tool Accessories, 3Ah Battery, Charger, and Tool Bag
- Dremel 4486 Keyless Chuck - Ideal for 1/32” (0.8mm) to 1/8” (3.2mm) Shank Rotary Tool Accessories

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*Product available on Desertcart New Zealand*
*Store origin: NZ*
*Last updated: 2026-03-10*