---
product_id: 128405116
title: "40V Lithium-ION 4.0 AH Battery | OP4040 - Charger Sold Separately"
brand: "ryobi"
price: "¥45749"
currency: JPY
in_stock: true
category: "Ryobi"
url: https://www.desertcart.jp/products/128405116-40v-lithium-ion-4-0-ah-battery-op4040-charger-sold
store_origin: JP
region: Japan
---

# 40V high voltage power 4.0 Ah long-lasting capacity Lightweight 8 oz for easy handling 40V Lithium-ION 4.0 AH Battery | OP4040 - Charger Sold Separately

**Brand:** ryobi
**Price:** ¥45749
**Availability:** ✅ In Stock

## Summary

> ⚡ Power your productivity, stay ahead of the pack!

## Quick Answers

- **What is this?** 40V Lithium-ION 4.0 AH Battery | OP4040 - Charger Sold Separately by ryobi
- **How much does it cost?** ¥45749 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/128405116-40v-lithium-ion-4-0-ah-battery-op4040-charger-sold)

## Best For

- ryobi enthusiasts

## Why This Product

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

## Key Features

- • **Trusted by Pros:** Chosen by lawn and landscape experts for reliability and exceptional performance on every job.
- • **Endurance That Lasts:** 4.0 amp-hour capacity ensures extended runtime, keeping you productive without constant recharging.
- • **Featherweight Champion:** At just 8 ounces, this battery is designed for effortless portability and reduced fatigue.
- • **Power Through Your Day:** 40V lithium-ion voltage delivers consistent, high-performance energy for all your outdoor tools.
- • **Seamless Compatibility:** Perfectly engineered to fit RYOBI power tools, making upgrades and replacements hassle-free.

## Overview

The 40V Lithium-ION 4.0 AH Battery by RYOBI offers a powerful 40-volt output combined with a robust 4.0 amp-hour capacity, delivering long-lasting energy for outdoor power tools. Lightweight at just 8 ounces, it ensures easy handling and is a preferred choice among lawn and landscape professionals for its reliable performance and seamless compatibility.

## Description

Stens replacement parts have become a favorite among lawn and landscape professionals thanks to exceptional performance.

## Features

- Stens replacement parts have become a favorite among lawn and landscape professionals thanks to exceptional performance.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07QYH36TC |
| Amperage | 4 A |
| Antenna Location | Power Tool |
| Battery Capacity | 4 amp_hours |
| Battery Cell Type | Lithium Ion |
| Battery Weight | 4 pounds |
| Best Sellers Rank | #28,861 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #230 in Cordless Tool Battery Packs |
| Brand | RYOBI |
| Customer Reviews | 4.5 4.5 out of 5 stars (3,572) |
| Included Components | item |
| Item Dimensions | 6.5 x 4 x 3 inches |
| Item Weight | 8 ounces |
| Manufacturer | RYOBI |
| Model Number | #OP4040A1 |
| Number of Batteries | 1 A batteries required. |
| Reusability | Rechargeable |
| UPC | 046396027146 681920963271 |
| Unit Count | 1 Count |
| Voltage | 40 volts |
| Warranty Description | 30 Day Limited Warranty |

## Product Details

- **Battery Capacity:** 4 amp_hours
- **Battery Cell Composition:** Lithium Ion
- **Brand:** RYOBI
- **Number of Batteries:** 1 A batteries required.
- **Recommended Uses For Product:** Power Tool

## Images

![40V Lithium-ION 4.0 AH Battery | OP4040 - Charger Sold Separately - Image 1](https://m.media-amazon.com/images/I/61MXv5vgnXL.jpg)

## Questions & Answers

**Q: What is the warranty on this 40 v?**
A: All Ryobi products have a 3 year warranty if you register it when purchased on their Ryobi site.

**Q: Will this battery replace the 4026 40v 94wh?**
A: It replaced the 4026 40v 95wh 2.6ah. it is the newer more powerful version

**Q: What’s the battery length with the mower?**
A: My need is no more than 30 minutes. When finished there are still 3 lights lit up on battery. I’ve then switched battery to hedge trimmer and used for additional 39 minutes with still plenty of charge left.

**Q: Will this battery last longer than a 2.6 ah high capacity battery?**
A: Yes, the battery lasts enough to cut about 5,000 square feet without shutting down.

## Frequently Bought Together

- Ryobi 40V 4.0 Ah Lithium-Ion Battery OP4040
- Ryobi 40V Battery and Charger Kit 4.0 Ah Lithium-Ion Battery Set OEM OP4040 + OP403A

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**Shop now:** [https://www.desertcart.jp/products/128405116-40v-lithium-ion-4-0-ah-battery-op4040-charger-sold](https://www.desertcart.jp/products/128405116-40v-lithium-ion-4-0-ah-battery-op4040-charger-sold)

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-09-19*