---
product_id: 396060920
title: "20V 4000mAh/4.0Ah Replacement Battery for Worx 20V WA3551, WA3551.1 WA3553 WA3553.2 WA3641 WG629E WG546E WU268 WX166.4 WX372.1 WX800 WX802 WX678 WX550 WX523 WU531.9 WG894E WG629E WG329E"
brand: "labtec"
price: "€ 52.71"
currency: EUR
in_stock: true
reviews_count: 8
category: "Labtec"
url: https://www.desertcart.sk/products/396060920-20v-4000mah-4-0ah-replacement-battery-for-worx-20v-wa3551
store_origin: SK
region: Slovakia
---

# 4000mAh High Capacity 20V Lithium-ion Power Built-in Safety Protections 20V 4000mAh/4.0Ah Replacement Battery for Worx 20V WA3551, WA3551.1 WA3553 WA3553.2 WA3641 WG629E WG546E WU268 WX166.4 WX372.1 WX800 WX802 WX678 WX550 WX523 WU531.9 WG894E WG629E WG329E

**Brand:** labtec
**Price:** € 52.71
**Availability:** ✅ In Stock

## Summary

> 🔋 Power up your Worx tools with confidence and never miss a beat!

## Quick Answers

- **What is this?** 20V 4000mAh/4.0Ah Replacement Battery for Worx 20V WA3551, WA3551.1 WA3553 WA3553.2 WA3641 WG629E WG546E WU268 WX166.4 WX372.1 WX800 WX802 WX678 WX550 WX523 WU531.9 WG894E WG629E WG329E by labtec
- **How much does it cost?** € 52.71 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/396060920-20v-4000mah-4-0ah-replacement-battery-for-worx-20v-wa3551)

## Best For

- labtec enthusiasts

## Why This Product

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

## Key Features

- • **Safety-First Design:** Advanced protections guard against overcharge, overdischarge, and short circuits.
- • **Lightweight & Portable:** At just 650g, it’s easy to handle and carry without adding bulk to your toolkit.
- • **Seamless Compatibility:** Perfectly fits a wide range of Worx 20V tools, ensuring hassle-free replacements.
- • **Long-Lasting Power Boost:** 4000mAh capacity delivers extended runtime for uninterrupted work sessions.
- • **Smart Battery Monitoring:** Integrated LED indicator keeps you informed of power levels at a glance.

## Overview

This 20V 4000mAh lithium-ion replacement battery is engineered for Worx 20V power tools, offering reliable, long-lasting energy with built-in safety features and a convenient LED power indicator. Lightweight and compatible with multiple Worx models, it’s the smart, cost-effective choice to keep your tools running at peak performance.

## Description

Brand: For WorxChemistry: Li-ionModel No.: WA3553Condition: Brand newSub-Type: Replacement BatteryCapacity: 4000mAh/4.0AhVoltage (V): 20VWattage: 80WItem Weight: 650gReplace for:Worx: WA3551 WA3551.1 WA3553 WA3553.1 WA3553.2 WA3641 etc series BatterySuitable for the following devices:WORX: WORX WX386 WORX WX386.9 WORX WX550.1 WORX WX550.9 WORX WX384.1WORX WX166.3 WORX WX176 WORX WX178.9 WORX WX279 WORX WX279.9 WORX WX290.9 WORX WX290.9WORX WX390 WORX WX367 WORX WX550 WORX WX176 WORX WX373 WX390Battery Maintenance:1.Please don't store the batteries for a long time, it need to be used at least once a month.2.If it's necessary, please using a cotton swab with alcohol to clean the battery contacts.3.After long-time using in your power tools, please fully rest the batteries.4.Before recharging the batteries, please make sure that the batteries have already coolled down.

Review: Perfect Worx replacement. - Excellent battery. Fitted to my Worx landroid mower and works perfectly. It's been on the robot all summer and never failed. Cost a lot less than a Worx battery and just as good. Excellent value.
Review: Good budget alternative to the Worx 20V battery - Bought this as a backup for my Worx 20V pressure washer. At £25, it's less than half the cost of the original. Used it to clean pathway and slabs in garden instead of the actual Worx battery. I use my McGuires 5 gallon car washing bucket as the 20V pressure washer empties a regular bucket in no time. I'd estimate that I managed to use up about 25+ gallons of water before the battery power began to go. Overall I'm happy with this as an aftermarket alternative to the original battery pack. Only used it once so can't comment on it's long term lifespan. It operated without overheating and charged back up fully with no issues. Like the genuine Worx battery it has a battery level indicator, which is a useful feature. My main use for the Worx pressure washer is car washing and usually uses up about two 5 gallon buckets for initial rinsing of the car and soap removal after hand washing. Well within the capability of this battery. I'm very happy with the quality and performance of this cheaper alternative. I may update this review when I've used it for a longer time in order to report back on long term ownership.

## Features

- ▶[Battery Parameters]-- Lithium-ion ,Voltage: 20V, Capacity: 4000mAh/4.0Ah, Wattage: 80W, Item Weight: 650g
- ▶[Applicable Models] -- Perfectly Compatible with Worx 20V Battery WA3551.1,WA3572,WA3553,WX390,WX176,WX178,WU268,WX166.4,WX372.1,WX800,WX802,WX678,WX550,WX523,WU531.9,WG894E,WG629E,WG329E,WG259E,WG169E,WG026.9,WG894E.9,WG546E.9,WG546E.9,WG546E
- ▶[Battery Protections]-- Made with high quality battery cells,Built-in protection against overcharge, overdischarge, overcurrent provides short circuit protection and constant voltage circuit.
- ▶[ LED Indicator] -- Designed with LED indicator to check battery power level conveniently.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B08RYQPVD8 |
| Amperage | 4 Amps |
| Antenna Location | Power Tool |
| Battery Capacity | 4000 Milliampere Hour (mAh) |
| Battery Cell Type | Lithium Ion |
| Battery Weight | 650 Grams |
| Battery capacity | 4000 Milliampere Hour (mAh) |
| Battery cell composition | Lithium Ion |
| Best Sellers Rank | 45,037 in DIY & Tools ( See Top 100 in DIY & Tools ) 195 in Cordless Tool Battery Packs |
| Brand | Labtec |
| Brand Name | Labtec |
| Country of Origin | China |
| Customer Reviews | 4.5 out of 5 stars 262 Reviews |
| Item Weight | 0.61 Kilograms |
| Number of Batteries | 1 A batteries required. (included) |
| Number of batteries | 1 A batteries required. (included) |
| Recommended uses for product | Power Tool |
| Reusability | Rechargeable |
| Unit Count | 1 Count |
| Unit count | 1 Count |
| Voltage | 20 Volts |

## Product Details

- **Battery capacity:** 4000 Milliampere Hour (mAh)
- **Battery cell composition:** Lithium Ion
- **Brand:** Labtec
- **Number of batteries:** 1 A batteries required. (included)
- **Recommended uses for product:** Power Tool

## Images

![20V 4000mAh/4.0Ah Replacement Battery for Worx 20V WA3551, WA3551.1 WA3553 WA3553.2 WA3641 WG629E WG546E WU268 WX166.4 WX372.1 WX800 WX802 WX678 WX550 WX523 WU531.9 WG894E WG629E WG329E - Image 1](https://m.media-amazon.com/images/I/71UmCPOsvpL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Perfect Worx replacement.
*by D***T on 4 October 2025*

Excellent battery. Fitted to my Worx landroid mower and works perfectly. It's been on the robot all summer and never failed. Cost a lot less than a Worx battery and just as good. Excellent value.

### ⭐⭐⭐⭐⭐ Good budget alternative to the Worx 20V battery
*by A***S on 23 March 2025*

Bought this as a backup for my Worx 20V pressure washer. At £25, it's less than half the cost of the original. Used it to clean pathway and slabs in garden instead of the actual Worx battery. I use my McGuires 5 gallon car washing bucket as the 20V pressure washer empties a regular bucket in no time. I'd estimate that I managed to use up about 25+ gallons of water before the battery power began to go. Overall I'm happy with this as an aftermarket alternative to the original battery pack. Only used it once so can't comment on it's long term lifespan. It operated without overheating and charged back up fully with no issues. Like the genuine Worx battery it has a battery level indicator, which is a useful feature. My main use for the Worx pressure washer is car washing and usually uses up about two 5 gallon buckets for initial rinsing of the car and soap removal after hand washing. Well within the capability of this battery. I'm very happy with the quality and performance of this cheaper alternative. I may update this review when I've used it for a longer time in order to report back on long term ownership.

### ⭐⭐⭐⭐ Good Worx alternative
*by N***X on 27 September 2025*

These Batteries seem to perform well, the only comment being that they fit slightly loser in the appliance and charger compared to the OEM, that said they are secure enough and have charged with no problem. Quality of construction seems good. I have a lot of 40V appliances so these will get a good test!

## Frequently Bought Together

- LabTEC 20V 4000mAh/4.0Ah Replacement Battery for Worx 20V WA3551, WA3551.1 WA3553 WA3553.2 WA3641 WG629E WG546E WU268 WX166.4 WX372.1 WX800 WX802 WX678 WX550 WX523 WU531.9 WG894E WG629E WG329E
- WORX Nitro 18V(20V MAX) Cordless Leaf Blower, PowerShare, Brushless Motor 2.0, Max. 209km/h Air Speed, 2-Speed Control, Bare Tool Only, WG543E.9
- WORX WA3880 20V Lithium Fast Charger 1 Hour Charger (1)

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*Product available on Desertcart Slovakia*
*Store origin: SK*
*Last updated: 2026-01-31*