RYOBI 40V Battery and Charger Kit 4.0 Ah Lithium-Ion Battery Set OEM OP40404 + OP403A (2021 Redesign with Easy Eject Latch)
Quick take
This RYOBI 40V 4.0Ah lithium-ion battery and charger kit is a practical add-on if you already use RYOBI 40V tools and want a spare battery plus a compatible charging setup. Review feedback highlights quick charging, a good fit (OEM), and the convenience of switching batteries to reduce downtime. The key catch: it’s only useful if your tools are part of the RYOBI 40V system.
Pros and cons
Pros
- Includes a 40V 4.0Ah lithium-ion battery and a compatible charger for the RYOBI 40V system.
- Buyers note it charges batteries quickly.
- OEM-style fit is a recurring theme (people say it fits well).
- Battery design includes an LED fuel gauge and an easy quick-release latch for swaps.
Cons
- Not a universal battery, it’s intended for RYOBI 40V tools.
- Battery runtime gains depend on your tool and workload, and review evidence is limited beyond general “works well” feedback.
What buyers think
Buyer-review evidence is limited in detail, but the recurring themes are straightforward. People frequently describe the kit as working as expected and emphasize the practical benefit of having an extra battery ready to swap in when the current one runs out. Charging performance comes up positively, with feedback focused on charging quickly. Fit is also mentioned, with users stating the OEM battery fits well in their tools. A smaller number of comments reference helpful battery behavior such as shut-off features, but overall review evidence remains too limited to draw strong conclusions about long-term runtime, heat management, or durability beyond “works great.”
What’s included and how it fits the RYOBI 40V system
This kit is built for RYOBI 40V tool owners. It combines one lithium-ion battery rated at 40V and 4.0Ah with the included charger so you can keep workflow moving. The battery is intended for use with RYOBI 40V tools, so if you have a mixed-brand shop or older voltage platform, double-check compatibility before buying.
Key battery and charger features that matter day to day
Easy battery swaps
The 2021 redesign is aimed at faster, simpler installation and removal, using a quick-release latch design. If you cycle between tasks or tools, this can reduce downtime when you need to switch batteries quickly.
LED fuel gauge for less guesswork
The battery includes a high-visibility LED fuel gauge to show remaining runtime. That can help you decide whether to finish a cut, wrap up a smaller task, or plan a battery swap.
Temperature-aware design
The battery uses a “COOL-CORE” design intended to reduce temperature to optimize performance and help extend battery life. While real-world outcomes vary by workload, temperature management is especially relevant for demanding jobs.
Charger experience
Reviewers specifically mention that the included charger can charge the batteries quickly. If you rely on cordless tools for recurring work, faster turnaround between sessions is often one of the biggest value drivers in a battery-and-charger set.
Pros and cons vs. common buyer priorities
Best for
- RYOBI 40V tool owners who want an extra 4.0Ah battery to reduce downtime.
- Shoppers who care about a convenient battery latch and an LED runtime indicator.
- People who want the bundle convenience of a charger included with the battery.
Consider alternatives if
- You need a battery for a different voltage platform or a different brand, because this kit is designed for RYOBI 40V tools.
- You’re looking for the most detailed proof of long-term durability, because the available review snippets are limited beyond general “works great/works as advertised” comments.
Verdict
The RYOBI 40V 4.0Ah battery and charger kit is a solid, practical upgrade for anyone already invested in the RYOBI 40V ecosystem. The combination of quick charging feedback from buyers, the convenience of a spare battery, and fit-focused comments make it easy to recommend for day-to-day cordless tool use. Just be sure you’re buying it for the right platform, since compatibility is the biggest determining factor for whether this kit will be useful to you.
Price and availability
Check current pricing and availability for this kit on Amazon.
FAQ
Is this battery charger kit compatible with all RYOBI tools?
No. This kit is intended for RYOBI 40V tools, so compatibility depends on your tool’s voltage system. If your tools are not part of the 40V platform, it may not fit or work as expected.
Does the kit include the battery and a charger?
Yes. It includes one 40V 4.0Ah lithium-ion battery and the included charger.
How fast does the charger charge the battery?
Some buyers specifically mention that the charger charges batteries quickly. Exact charge times are not detailed in the available information, so real-world timing can vary by battery condition and charging conditions.
What feedback do buyers give about the battery fit?
Available buyer comments commonly focus on good fit for OEM-style battery use within RYOBI 40V tools. If your tool is compatible with the 40V battery lineup, this should help with confidence.
Is this kit worth buying if I already have a charger?
It can be, but it depends on whether your charger is compatible with this battery lineup. If you already own a compatible charger, you may prefer buying just an additional battery. If not, this bundle simplifies the setup.
Specifications
| Product Title | RYOBI 40V Battery and Charger Kit 4.0 Ah Lithium-Ion Battery Set OEM OP40404 + OP403A (2021 Redesign with Easy Eject Latch) |
|---|---|
| Category | Electronics > Household Batteries, Chargers & Accessories > Battery & Charger Sets |
| Brand | RYOBI |
| Manufacturer | Ryobi |
| Model Name | OP4040+OP404 |
| Model Number | OP4040+OP404 |
| Item Weight | 3.6 Pounds |
| Number of Batteries | 1 Lithium Ion batteries required. |
| UPC | 728370633368 |
| Battery Cell Type | Lithium Ion |
| Battery Capacity | 4 Amp Hours |
| Voltage | 40 Volts |
| Reusability | Rechargeable |
| Amperage | 4 Amps |
| Compatible Phone Models | for use with Ryobi 40V tools |
| Unit Count | 1.0 Count |
| Antenna Location | Power Tool |
| Battery Cell Composition | Lithium Ion |
| Recommended Uses For Product | Power Tool |
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