---
product_id: 232804918
title: "JANRI WA3742 WA3732 WA3875 WA3881 WA3731 20V 6PIN Lithium Battery Charger compatible with Worx WA3520 WA3525 WA3578 WA3575 WA3512 WA3512.1 WA3522 WA3847 WA3868 WA3835 WA3764 (Not fit 4 pin)"
brand: "janri"
price: "A$65"
currency: AUD
in_stock: true
url: https://www.desertcart.com.au/products/232804918-janri-wa3742-wa3732-wa3875-wa3881-wa3731-20v-6pin-lithium-battery
store_origin: AU
region: Australia
---

# 20V fast charging Universal 100-240V input Multi-layer battery protection JANRI WA3742 WA3732 WA3875 WA3881 WA3731 20V 6PIN Lithium Battery Charger compatible with Worx WA3520 WA3525 WA3578 WA3575 WA3512 WA3512.1 WA3522 WA3847 WA3868 WA3835 WA3764 (Not fit 4 pin)

**Brand:** janri
**Price:** A$65
**Availability:** ✅ In Stock

## Summary

> ⚡ Power up your Worx tools with precision and speed—never miss a beat!

## Quick Answers

- **What is this?** JANRI WA3742 WA3732 WA3875 WA3881 WA3731 20V 6PIN Lithium Battery Charger compatible with Worx WA3520 WA3525 WA3578 WA3575 WA3512 WA3512.1 WA3522 WA3847 WA3868 WA3835 WA3764 (Not fit 4 pin) by janri
- **How much does it cost?** A$65 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.au](https://www.desertcart.com.au/products/232804918-janri-wa3742-wa3732-wa3875-wa3881-wa3731-20v-6pin-lithium-battery)

## Best For

- janri enthusiasts

## Why This Product

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

## Key Features

- • **Smart Safety Tech:** LED indicators, multi-protections, and energy-saving sleep mode keep your battery safe and long-lasting.
- • **Precision 6-Pin Fit:** Engineered exclusively for Worx 20V 6-pin batteries—no guesswork, just perfect compatibility.
- • **Certified Reliability:** CE, FCC, and ROHS certified with a 12-month warranty—trustworthy power for your cordless tools.
- • **Rapid 5-Hour Recharge:** Get back to work faster with efficient 20V lithium battery charging in just 5 hours.
- • **Universal Voltage Compatibility:** Seamlessly powers up anywhere with a wide 100-240V input range—perfect for global professionals.

## Overview

The JANRI 20V 6-pin lithium battery charger is a certified, fast-charging replacement compatible with a wide range of Worx 20V lithium-ion batteries and cordless tools. Featuring universal voltage input, advanced safety protections, and a smart LED indicator, it delivers reliable, efficient charging in about 5 hours. Designed exclusively for 6-pin Worx batteries, it ensures perfect fit and performance with a 12-month warranty for peace of mind.

## Description

JANRI WA3742 WA3732 WA3875 WA3881 WA3731 20V 6PIN Lithium Battery Charger compatible with Worx WA3520 WA3525 WA3578 WA3575 WA3512 WA3512.1 WA3522 WA3847 WA3868 WA3835 WA3764 (Not fit 4 pin)

## Features

- Brand JANRI 20V Li-ion battery charger | Voltage Input: universal 100V to 240V | Voltage Output: 18V/20V. UK 3 PIN Plug, Replacement for WORX battery 20V 6 pin WA3731 WA3742 WA3732 WA3875 WA3881 WA3847 WA3868 WA3835 WA3764 etc (only for 6pin , not fit 4 pin, please check carefully before you order )
- Compatible with Worx WA3742 be used to charge WORX 20 volt lithium batteries: WA3520 WA3525 WA3512 WA3512.1 WA3522 WA3544 WA3575 WA3578 WA3836 etc.
- Compatible with Cordless 20-volt tools WG163 WG261.9 WG584.9 WG322 WG546.9 WG801 WX550L WG320.9 WG629.9 WX682L.9 WX530L.9 WX169L.9 WG323.
- Advanced charging technology: Charges 20-volt lithium batteries in about 5 hours as original. This charger is designed with LED indicator light, multi protections and energy-saving sleep mode protects the battery from damage.
- Safety and service: This 20v battery charger are CE, FCC, ROHS certified, tested and validated by manufacturer to match specifications of OEM products. 12 months warranty. if not very sure the charger is compatible with your battery, please first contact us.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | JANRI |
| Part Number | 29130bae-f283-4ee9-965c-4f10c604492b |
| Package Dimensions | 11.9 x 9.1 x 7.8 cm; 210 g |
| Item model number | 29130bae-f283-4ee9-965c-4f10c604492b |
| Size | WA3742 |
| Colour | Black |
| Material | Plastic |
| Voltage | 20 Volts |
| Certification | FCC |
| Batteries included? | No |
| Batteries Required? | No |
| Battery Cell Type | Lithium Ion |
| Battery Capacity | 20 Volts |
| Item Weight | 210 g |

## Product Details

- **Brand:** JANRI
- **Colour:** Black
- **Item weight:** 0.21 Kilograms
- **Output voltage:** 18 Volts
- **Specification met:** FCC

## Images

![JANRI WA3742 WA3732 WA3875 WA3881 WA3731 20V 6PIN Lithium Battery Charger compatible with Worx WA3520 WA3525 WA3578 WA3575 WA3512 WA3512.1 WA3522 WA3847 WA3868 WA3835 WA3764 (Not fit 4 pin) - Image 1](https://m.media-amazon.com/images/I/61neTwG3KQL.jpg)
![JANRI WA3742 WA3732 WA3875 WA3881 WA3731 20V 6PIN Lithium Battery Charger compatible with Worx WA3520 WA3525 WA3578 WA3575 WA3512 WA3512.1 WA3522 WA3847 WA3868 WA3835 WA3764 (Not fit 4 pin) - Image 2](https://m.media-amazon.com/images/I/61RqAg5U+yL.jpg)
![JANRI WA3742 WA3732 WA3875 WA3881 WA3731 20V 6PIN Lithium Battery Charger compatible with Worx WA3520 WA3525 WA3578 WA3575 WA3512 WA3512.1 WA3522 WA3847 WA3868 WA3835 WA3764 (Not fit 4 pin) - Image 3](https://m.media-amazon.com/images/I/71oGPN5VOaL.jpg)
![JANRI WA3742 WA3732 WA3875 WA3881 WA3731 20V 6PIN Lithium Battery Charger compatible with Worx WA3520 WA3525 WA3578 WA3575 WA3512 WA3512.1 WA3522 WA3847 WA3868 WA3835 WA3764 (Not fit 4 pin) - Image 4](https://m.media-amazon.com/images/I/71iM3gXkEJL.jpg)
![JANRI WA3742 WA3732 WA3875 WA3881 WA3731 20V 6PIN Lithium Battery Charger compatible with Worx WA3520 WA3525 WA3578 WA3575 WA3512 WA3512.1 WA3522 WA3847 WA3868 WA3835 WA3764 (Not fit 4 pin) - Image 5](https://m.media-amazon.com/images/I/61KoNQa7P4L.jpg)

## Available Options

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

## Questions & Answers

**Q: My charger is wa3731. my battery is wa3512. is this charger compatible?**
A: Charged my WA3512 OK

**Q: Will this work as a replacement to the Worx WA3731 charger?**
A: It look suspiciously similar. There are a lot of products which use this generic battery system. There is a video above which is a shot of a battery which works with the charger. Have a look. This battery was used in Worx, JCB and Qualcast products often in the last 10 years.

**Q: What's it mean when the led flashes red and green? says it's compatible with wa3731 charger for wa3512 battery.**
A: It means that the polarity is reversed.  The positive should feed via the + on the charger plate. I tested mine and got a negative meter reading indicating + and - are connected the wrong way round.

**Q: Is this compatabile with a worx WA3731**
A: It says so in the title; but do you really need a dual charger - the single one is £19.99
Make sure you check the number of pins.

## Frequently Bought Together

- JANRI WA3742 WA3732 WA3875 WA3881 WA3731 20V 6PIN Lithium Battery Charger compatible with Worx WA3520 WA3525 WA3578 WA3575 WA3512 WA3512.1 WA3522 WA3847 WA3868 WA3835 WA3764 (Not fit OLD 4 pin)
- Strimmer Spool Compatible with Qualcast Worx Grass Trimmers Replace CGT183A, CGT18LA1, WA0004,WG150, WG151, WG152, WG153 by Poweka
- Poweka WA0004 Trimmer Spool Line Compatible with Qualcast WORX Lawn Trimmers Replace CGT183A CGT18LA1 WG180 WG150 WG152 WG153 WG163 WA0010 Trimmer Spools

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.com.au/products/232804918-janri-wa3742-wa3732-wa3875-wa3881-wa3731-20v-6pin-lithium-battery](https://www.desertcart.com.au/products/232804918-janri-wa3742-wa3732-wa3875-wa3881-wa3731-20v-6pin-lithium-battery)

---

*Product available on Desertcart Australia*
*Store origin: AU*
*Last updated: 2026-01-31*