Ryobi 40V Battery Compatibility
Ryobi’s 40V platform is designed for outdoor power equipment — mowers, chainsaws, blowers, trimmers, and snow blowers. With over 85 tools in the system, it’s one of the largest cordless outdoor ranges available. The 40V line is exclusive to The Home Depot in the US and sits alongside (but is separate from) the Ryobi ONE+ 18V system.
TL;DR
- Ryobi 40V batteries power 85+ outdoor tools — mowers, trimmers, blowers, chainsaws, snow blowers, and more.
- 40V and 40V HP batteries are cross-compatible — any 40V battery works in any 40V tool.
- 40V HP (High Performance) batteries deliver extra power and runtime in HP-designated tools, but also work in standard 40V tools.
- Important: Ryobi changed the physical shape of some newer 40V batteries. Certain taller batteries (6 Ah and above) may not fit in older tools with moulded battery compartments.
- 40V batteries are not compatible with Ryobi ONE+ 18V tools — completely different platforms.
- Exclusively sold at The Home Depot (US).
Compatibility Rules
Ryobi states that any 40V lithium-ion battery can power any tool in the 40V platform. This includes both standard 40V and 40V HP batteries — they share the same slide-on connector. HP batteries simply deliver higher sustained power output, which HP-branded tools are engineered to take advantage of.
The battery shape issue: In recent years, Ryobi redesigned the casing on some 40V batteries (particularly 6 Ah and larger units). These newer batteries are taller (approximately 4.5 inches) and may not physically fit into older 40V tools that have a moulded battery compartment enclosing the top of the battery. If you own older 40V tools, check the battery dimensions before buying a newer high-capacity pack. Lower-capacity batteries (2 Ah, 4 Ah) in the current design generally still fit older tools.
What It Is NOT Compatible With
| Platform | Compatible? | Notes |
|---|---|---|
| All Ryobi 40V tools | ✅ Yes | Universal fit across 85+ outdoor tools |
| Ryobi 40V HP tools | ✅ Yes | Standard 40V batteries work; HP batteries unlock full performance |
| Ryobi ONE+ 18V tools | ❌ No | Completely different voltage and connector |
| Other brands (DeWalt, Makita, Milwaukee, EGO) | ❌ No | No cross-brand compatibility |
| Older Ryobi 40V tools (with some new batteries) | ⚠️ Check | Newer tall-format 6 Ah+ batteries may not fit older moulded compartments |
Available Batteries
Ryobi’s 40V batteries come in standard and HP variants across a wide range of capacities:
Standard 40V Batteries
| Model | Capacity | Energy | Best For |
|---|---|---|---|
| OP40201 | 2.0 Ah | 72 Wh | Light-duty — trimmers, edgers, small blowers |
| OP4030 / OP40301 | 3.0 Ah | 108 Wh | Medium-duty — hedge trimmers, string trimmers |
| OP4040 / OP40404 | 4.0 Ah | 144 Wh | General outdoor use — most tools |
| OP4050 / OP40501 | 5.0 Ah | 180 Wh | Extended runtime — mowers, chainsaws |
| OP40602 | 6.0 Ah | 216 Wh | Maximum runtime — large mowers, snow blowers (taller battery) |
40V HP (High Performance) Batteries
| Model | Capacity | Energy | Best For |
|---|---|---|---|
| OP40404 (HP) | 4.0 Ah | 144 Wh | HP tools — delivers higher sustained discharge |
| OP4050A (HP) | 5.0 Ah | 180 Wh | HP mowers and chainsaws — full performance ceiling |
| OP40602 (HP) | 6.0 Ah | 216 Wh | Maximum HP performance — taller form factor |
Charger Notes
Ryobi 40V chargers are compatible with all 40V batteries (standard and HP). They are not interchangeable with ONE+ 18V chargers.
| Charger Model | Type | Charge Time (4 Ah) | Notes |
|---|---|---|---|
| OP404 | Standard charger | ~120 minutes | Included with most kits |
| OP401 / OP406A | Rapid charger | ~60 minutes | Faster charging for all 40V batteries |
| OP408A | Super charger | ~45 minutes | Fastest available, sold separately |
Compatible Tools List
The Ryobi 40V system focuses on outdoor power equipment. Below are the most popular tools by category.
Lawn Mowers
| Model | Tool | Key Spec |
|---|---|---|
| RY401170 | 21 in. Self-Propelled Mower | Brushless motor, 7-position height adjust |
| RY401180 | 21 in. HP Brushless CrossCut Mower | Dual-blade crosscut system |
| RY40108 | 20 in. Push Mower | Budget-friendly, 5-position height |
| RY40580 | 30 in. Riding Mower | Up to 2.5 acres per charge (3 batteries) |
| RY401200 | 21 in. HP Self-Propelled Mower | CrossCut dual-blade, rear-wheel drive |
String Trimmers & Edgers
| Model | Tool | Key Spec |
|---|---|---|
| RY40250 | 15 in. String Trimmer | Attachment capable, bump-feed head |
| RY40290 | Carbon Fibre Shaft String Trimmer | Lightweight, reduced vibration |
| RY40506 | Expand-It Trimmer Power Head | Compatible with Expand-It universal attachments |
| RY40560 | Edger Attachment | Pairs with Expand-It power head |
Blowers
| Model | Tool | Key Spec |
|---|---|---|
| RY40408 | 125 MPH Leaf Blower | 550 CFM, variable speed trigger |
| RY40470 | Whisper Series Blower | 59 dB — designed for noise-restricted areas |
| RY404150 | HP Brushless Backpack Blower | 730 CFM, backpack harness for extended use |
Chainsaws
| Model | Tool | Key Spec |
|---|---|---|
| RY40530 | 14 in. Chainsaw | Tool-free chain tensioning |
| RY40550 | HP Brushless 18 in. Chainsaw | Gas-like cutting speed |
| RY40570 | 10 in. Pole Saw | 9 ft. reach, auto-oiler |
Hedge Trimmers
| Model | Tool | Key Spec |
|---|---|---|
| RY40620 | 24 in. Hedge Trimmer | 3/4 in. cut capacity, dual-action blades |
| RY40640 | 26 in. HP Brushless Hedge Trimmer | 1 in. cut capacity |
Snow Blowers & Winter
| Model | Tool | Key Spec |
|---|---|---|
| RY40806 | 21 in. Snow Blower | Brushless motor, clears up to 10 in. depth |
| RY40860 | HP Brushless 24 in. 2-Stage Snow Blower | Steel auger, up to 50 ft. throw distance |
Other Outdoor Tools
| Model | Tool | Key Spec |
|---|---|---|
| RY40850 | Pressure Washer | 1,500 PSI, portable |
| RY40480 | Backpack Chemical Sprayer | 4-gallon tank |
| RY40460 | Cultivator | 4 tines, 8 in. tilling width |
| RY40770 | Power Inverter | 1,800W, powers mains appliances |
This is a representative selection. Ryobi’s full 40V catalogue includes 85+ tools. Visit ryobitools.com for the complete current lineup.
Sources
- Ryobi Tools — 40V Collection
- The Home Depot — Ryobi 40V Tools
- Toolboy’s Corner — Ryobi 40V Batteries Reference
Where to Buy Ryobi Batteries
You can find the full range of Ryobi batteries, tools, and chargers on Amazon UK:
Buy Ryobi 40V Batteries on Amazon
Buy Ryobi 40V Chargers on Amazon
Frequently Asked Questions
Related Guides
- Ryobi ONE+ 18V Battery Compatibility
- Which Ryobi ONE+ Battery Should You Buy?
- Can You Use Ryobi Batteries in Other Tools?
- Ryobi P107 Replacement Battery Guide
- Ryobi P197 Replacement Battery Guide
- Power Tool Battery Warranty Guide by Brand
- Power Tool Battery Glossary: Ah, V, Wh Explained
Can I use Ryobi 40V batteries in ONE+ 18V tools?
No. Ryobi 40V and ONE+ 18V are completely separate platforms with different physical connections and voltages. They are not interchangeable in any direction. Each requires its own dedicated batteries and chargers.
Is Ryobi 40V good for lawn care?
Yes. Ryobi 40V is specifically designed for outdoor power equipment — lawn mowers, chainsaws, leaf blowers, string trimmers, and snow blowers. The 40V platform provides the sustained power output needed for yardwork tasks that often exceed what 18V can comfortably deliver.
Which Ryobi 40V battery should I get for a lawn mower?
A 6.0Ah battery is the minimum for push mowers, providing approximately 40 minutes of mowing. For larger yards, the 7.5Ah or the new 40V HP 6.0Ah batteries are recommended. Having two batteries lets you mow a full-size yard without waiting for a recharge.