---
product_id: 718774125
title: "Ryobi 40V Battery and Charger Kit 4.0 Ah Lithium-Ion Battery Set OEM OP4040 + OP403A"
brand: "ryobi"
price: "€ 367.60"
currency: EUR
in_stock: true
reviews_count: 5
category: "Ryobi"
url: https://www.desertcart.hr/products/718774125-ryobi-40v-battery-and-charger-kit-4-0-ah-lithium
store_origin: HR
region: Croatia
---

# Fast Slim Line quick charge tech 40V 4.0Ah high-capacity power Operates down to -4°F cold-proof Ryobi 40V Battery and Charger Kit 4.0 Ah Lithium-Ion Battery Set OEM OP4040 + OP403A

**Brand:** ryobi
**Price:** € 367.60
**Availability:** ✅ In Stock

## Summary

> 🔋 Power your outdoor empire with Ryobi’s unstoppable 40V battery kit!

## Quick Answers

- **What is this?** Ryobi 40V Battery and Charger Kit 4.0 Ah Lithium-Ion Battery Set OEM OP4040 + OP403A by ryobi
- **How much does it cost?** € 367.60 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/718774125-ryobi-40v-battery-and-charger-kit-4-0-ah-lithium)

## 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

- • **Stay In The Know:** On-board LED fuel gauge keeps you informed of battery life at a glance—no surprises.
- • **Cold Weather Warrior:** Reliable performance even in freezing conditions down to -4°F keeps your tools ready year-round.
- • **Multi-Task Charging Hub:** Built-in USB port lets you power your phone or devices while charging your battery—work smarter, not harder.
- • **Charge Fast, Work Longer:** Slim charger with quick charge technology minimizes downtime so you stay productive.
- • **Power Through Your Projects:** 40V 4.0Ah lithium-ion battery delivers fade-free, extended runtime for all your Ryobi 40V tools.

## Overview

The Ryobi 40V 4.0Ah Lithium-Ion Battery and Slim Charger Kit (OP4040 + OP403A) offers fade-free, high-capacity power compatible with all Ryobi 40V outdoor tools. Featuring a quick charge slim design, an on-board LED battery life indicator, and cold-weather operation down to -4°F, this kit ensures reliable, extended runtime for professional-grade performance. The integrated USB charging port adds versatile convenience, making it an essential energy solution for any serious homeowner or outdoor enthusiast.

## Description

Use this either as a spare, a replacement, or as your first battery in your outdoor tool lineup. It can charge Ryobi’s 40V outdoor product line. That includes their leaf blower, chain saw, edger, hedge trimmer, lawn mower, string trimmer, power head, pole saw, and hedge trimmer. You’re bound to be using at least one of these tools at any point during the year, and that means you’ll need reliable energy. This 40 Volt battery has the features any homeowner needs in a reliable product. It has an onboard fuel gauge, letting you know how much of a charge is left with LED lighting. Its power doesn’t fade over time, meaning that you can work with your tools on full power until the battery runs out. Perhaps most impressive is this battery’s cold-weather performance. It can work in conditions as cold as -4 degrees Fahrenheit! Couple these features with the speedy charge time, Ryobi’s suite of powerful outdoor tools, and a long runtime, this is a product you’ll wish you had three more of as soon as you get to using it. Ryobi means reliable, and this OP40404 40 Volt battery is no exception. New Slim Line design provides quick charge technology in a portable form factor Includes USB charging port so you can charge other devices (such as your cell phone) while your Ryobi 40V battery is charging.

Review: I've purchased 4 off brand 6ah batteries. All died within a year. My original Ryobi 4ah is going strong 4 years later. Power doesn't sag much when put on a heavy load, ex mowing tall wet grass. It does have a overheat protection built in to prevent damage. I have 3 of these Ryobi batteries now and won't purchase other brands anymore. Live and learn. These cost more than cheap off brand batteries, but they pay for themselves by lasting years at a time and having a high steady output. It may be tempting to get 2x 6ah batteries for the price of this one, but don't do it! They have power sags and fail quickly. Save yourself money and buy Ryobi batteries.
Review: Buen producto, no traía su caja original pero ha funcionado sin problema.

## Features

- Includes the Ryobi 40 Volt 4.0 battery and the slim charger
- Both the Battery and charger is compatible with all other pre existing Ryobi 40V equipment
- On-board LED battery life indicator
- Lithium-ion cells deliver fade-free performance
- High capacity OP40404 4.0 Ah battery for extended run time

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07V2BTXCF |
| Antenna Location | for use with Ryobi 140V power tools |
| Battery Capacity | 4000 Milliampere Hour (mAh) |
| Battery Cell Type | Lithium Ion |
| Battery Weight | 150 Grams |
| Brand | RYOBI |
| Compatible Phone Models | for use with Ryobi 140V power tools |
| Customer Reviews | 4.5 4.5 out of 5 stars (962) |
| Item Dimensions | 27.2 x 26.4 x 11 centimeters |
| Item Weight | 4.65 Pounds |
| Manufacturer | ryobi |
| Number of Batteries | 1 Lithium Ion batteries required. |
| Reusability | Rechargeable |
| UPC | 728370632330 |
| Unit Count | 1 Count |
| Voltage | 40 Volts |

## Product Details

- **Battery capacity:** 4000 Milliampere Hour (mAh)
- **Battery cell composition:** Lithium Ion
- **Brand:** RYOBI
- **Number of batteries:** 1 Lithium Ion batteries required.
- **Recommended uses for product:** for use with Ryobi 140V power tools

## Images

![Ryobi 40V Battery and Charger Kit 4.0 Ah Lithium-Ion Battery Set OEM OP4040 + OP403A - Image 1](https://m.media-amazon.com/images/I/71gG-1Lm+IL.jpg)
![Ryobi 40V Battery and Charger Kit 4.0 Ah Lithium-Ion Battery Set OEM OP4040 + OP403A - Image 2](https://m.media-amazon.com/images/I/616blB9jrhL.jpg)
![Ryobi 40V Battery and Charger Kit 4.0 Ah Lithium-Ion Battery Set OEM OP4040 + OP403A - Image 3](https://m.media-amazon.com/images/I/31eoeHhGaZL.jpg)

## Questions & Answers

**Q: Can a ryobi 6 ah battery be used in a 4ah mower and a 4ah charger?**
A: The charger that comes with this 4ah battery does not work with my 6ah battery. It flashes red to show a fault. I have a 6ah battery that came with my mower. I bought this 4ah battery as a secondary to be able to finish the lawn in one session.

**Q: how do i charge**
A: Use the charger that came with the battery.  When all else fails, read the directions.

**Q: Does this battery fit a Ryobi mower #40180-Y**
A: Yes fit

**Q: Will this work on my Ryobi snowblower?**
A: If your snowblower uses a 40V battery it will work. Though note the ah of the battery in your snow blower.  The higher the ah means less recharging during jobs.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by S***S on 30 August 2024*

I've purchased 4 off brand 6ah batteries. All died within a year. My original Ryobi 4ah is going strong 4 years later. Power doesn't sag much when put on a heavy load, ex mowing tall wet grass. It does have a overheat protection built in to prevent damage. I have 3 of these Ryobi batteries now and won't purchase other brands anymore. Live and learn. These cost more than cheap off brand batteries, but they pay for themselves by lasting years at a time and having a high steady output. It may be tempting to get 2x 6ah batteries for the price of this one, but don't do it! They have power sags and fail quickly. Save yourself money and buy Ryobi batteries.

### ⭐⭐⭐⭐⭐ Review
*by E***R on 10 March 2026*

Buen producto, no traía su caja original pero ha funcionado sin problema.

### ⭐⭐⭐⭐⭐ Review
*by S***S on 14 August 2023*

This battery charged up fine and works great in my mower. It powered the mower (through thick tall grass) for about an hour. The charger is very lightweight. There isn't a way to mount it the way that, for example, Dewalt chargers have holes that allow you to mount them on screws to a wall. The battery is heavy though, and significantly larger than the charger, so maybe that's why they don't encourage wall mounting. The battery gets very hot when in use, but I was able to touch it with bare hands after mowing for an hour in 100 degree weather. It cooled quickly once back inside. Not sure what else to say about a battery and charger but this was my first time using Ryobi anything. I got a Ryobi mower with no battery from my brother, so I bought this battery and charger. I've tended toward Dewalt and Craftsman over Ryobi for power tools, but I am super impressed with the Ryobi mower. Never used anything but gas operated lawn appliances in the past. The power was way more than I expected for a battery powered mower. It chewed through tall grass better than my last gas push mower. Even my gas riding mower slows down with this grass and the Ryobi electric mower was fine. So overall, I'm very impressed with the power this brand packs. I won't hesitate to buy more tools and batteries from Ryobi going forward.

## Frequently Bought Together

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

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*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-05-21*