---
product_id: 486681759
title: "(2-Pack) 3.6V 1800mAh AA Ni-MH Battery Replacement for Craftsman 73904 Flashlight Emergency Exit Light Unitech AA1800mAh OSI OSA-343 KTK KIK AA1400mAh"
brand: "lunggwey"
price: "¥6501"
currency: JPY
in_stock: true
reviews_count: 8
category: "Lunggwey"
url: https://www.desertcart.jp/products/486681759-2-pack-3-6v-1800mah-aa-ni-mh-battery-replacement
store_origin: JP
region: Japan
---

# 1800mAh long-lasting capacity 3.6V high voltage power 8-inch pre-wired connector (2-Pack) 3.6V 1800mAh AA Ni-MH Battery Replacement for Craftsman 73904 Flashlight Emergency Exit Light Unitech AA1800mAh OSI OSA-343 KTK KIK AA1400mAh

**Brand:** lunggwey
**Price:** ¥6501
**Availability:** ✅ In Stock

## Summary

> 🔋 Stay Powered, Stay Prepared: The Backup Battery Your Exit Signs Deserve

## Quick Answers

- **What is this?** (2-Pack) 3.6V 1800mAh AA Ni-MH Battery Replacement for Craftsman 73904 Flashlight Emergency Exit Light Unitech AA1800mAh OSI OSA-343 KTK KIK AA1400mAh by lunggwey
- **How much does it cost?** ¥6501 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/486681759-2-pack-3-6v-1800mah-aa-ni-mh-battery-replacement)

## Best For

- lunggwey enthusiasts

## Why This Product

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

## Key Features

- • **Cost-Saving Replacement:** Avoid expensive full-unit replacements—upgrade your emergency lighting affordably
- • **Plug & Play Convenience:** Comes with 203mm (8 in) wire leads and correct polarity connector for hassle-free installation
- • **Universal Compatibility:** Seamlessly replaces multiple models including Craftsman 73904 and Unitech AA1800mAh
- • **Extended Runtime, Less Downtime:** High-capacity 1800mAh cells deliver reliable, long-lasting backup power
- • **Power Up Your Emergency Lighting:** 3.6V Ni-MH battery designed specifically for LED flashlights and exit lights

## Overview

This 2-pack of 3.6V 1800mAh Ni-MH AA batteries is engineered for emergency and exit lighting systems, offering a high-capacity, reliable power source with easy installation via pre-attached 8-inch wire leads. Compatible with multiple popular models, it provides a cost-effective, long-lasting replacement solution trusted by professionals.

## Description

Buy Lunggwey (2-Pack) 3.6V 1800mAh AA Ni-MH Battery Replacement for Craftsman 73904 Flashlight Emergency Exit Light Unitech AA1800mAh OSI OSA-343 KTK KIK AA1400mAh: AA - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: Great Find - Man, these worked great and saved me $90 from having to purchase a new Exit light. Glad I was able to find them. It wasn’t easy to find.
Review: Perfect Battery Replacement for your store's EXIT lights... - Worked just as described, we had to replace two battery units in our EXIT signs in our store and we saved a lot of money buying these on desertcart. They were very easy to install, great value for your money, fit perfectly and was an excellent battery replacement.

## Features

- BUILT FOR LIGHTING DEVICES – 3.6V 1800mAh Ni-MH battery compatible with LED flashlights and emergency/exit light systems
- REPLACES MULTIPLE MODELS – Compatible with lower capacity 3.6V 1400mAh and 1800mAh Ni-MH packs
- READY TO INSTALL – Includes 203 mm (8 in) wire leads with correct connector and polarity
- HIGH-CAPACITY BACKUP POWER – Offers long-lasting performance for commercial lighting and battery backup units
- COMPATIBLE MODELS – Craftsman 73904 Unitech AA1800mAh OSI OSA-343 KTK KIK AA1400mAh

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0B17LSP3C |
| Batteries | 2 Product Specific batteries required. (included) |
| Best Sellers Rank | #157,739 in Health & Household ( See Top 100 in Health & Household ) #383 in AA Batteries |
| Customer Reviews | 4.7 4.7 out of 5 stars (32) |
| Date First Available | May 13, 2022 |
| Item Weight | 6.7 ounces |
| Manufacturer | elxjar |
| Package Dimensions | 4.06 x 2.68 x 1.81 inches |

## Product Details

- **Battery Capacity:** 1800 Milliampere Hour (mAh)
- **Battery Cell Composition:** NiMH
- **Brand:** Lunggwey
- **Number of Batteries:** 2 Product Specific batteries required. (included)
- **Recommended Uses For Product:** Emergency

## Images

![(2-Pack) 3.6V 1800mAh AA Ni-MH Battery Replacement for Craftsman 73904 Flashlight Emergency Exit Light Unitech AA1800mAh OSI OSA-343 KTK KIK AA1400mAh - Image 1](https://m.media-amazon.com/images/I/61dThOJRJSL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great Find
*by K***O on December 31, 2025*

Man, these worked great and saved me $90 from having to purchase a new Exit light. Glad I was able to find them. It wasn’t easy to find.

### ⭐⭐⭐⭐⭐ Perfect Battery Replacement for your store's EXIT lights...
*by A***R on May 27, 2025*

Worked just as described, we had to replace two battery units in our EXIT signs in our store and we saved a lot of money buying these on Amazon. They were very easy to install, great value for your money, fit perfectly and was an excellent battery replacement.

### ⭐⭐⭐⭐ Not a “drop-in” installation.
*by G***8 on January 18, 2026*

I’m happy with the purchase, and would definitely do it again, but it is not a “drop in” installation. These batteries are slightly longer than the factory originals, and the polarity of the plug-in cord is reversed so the wire leads must be reversed in the plug (requires a pointed tool for removal), and there are 2-3 plastic “skirts” that must be removed from the handle of the flashlight to accommodate the battery pack. There are some excellent YouTube videos showing the process.

## Frequently Bought Together

- Lunggwey (2-Pack) 3.6V 1800mAh AA Ni-MH Battery, Replacement for Emergency/Exit Light 73904 Craftsman LED Flashlight, Compatible with Unitech Solar Light AA1800mAh, OSI OSA-343 / KTK KIK AA1400mAh
- (5-Pack) 3.6V 900mAh Ni-CD AA Exit Sign Emergency Light Battery, Replacement Battery for Exitronix 10010037, Max Power B2-0031 MH468886, Unitech LEDR-1 6200RP, Dantona CUSTOM-318 OSA230, Lowes 253799
- BBAT0043A Unitech BAT9.6V700 AA900MAH 9.6V ELB-B003 Lithonia ELB-B004 9.6v 900mAh Ni-CD Battery Pack Replacement for Exit Sign Emergency Light Fire Batteryhawk, LLC

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**Shop now:** [https://www.desertcart.jp/products/486681759-2-pack-3-6v-1800mah-aa-ni-mh-battery-replacement](https://www.desertcart.jp/products/486681759-2-pack-3-6v-1800mah-aa-ni-mh-battery-replacement)

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-02-12*