Ryobi 36V MAX POWER Battery Compatibility
If you are shopping in the UK and looking for a Ryobi 40V battery, you are looking for a platform Ryobi does not sell here. Ryobi sells a 40V outdoor system in North America; Ryobi UK’s higher-voltage outdoor range is 36V MAX POWER. This guide covers the UK 36V MAX POWER range — which batteries exist, what they fit, and why 36V and 18V ONE+ packs are not interchangeable.
Buying in the UK? There is no Ryobi 40V battery or tool in the UK range. Ryobi UK lists exactly three battery platforms: 18V ONE+, 36V MAX POWER and 4V USB Lithium. If a UK listing advertises a “Ryobi 40V” battery, treat it as an import or a third-party pack, not a Ryobi UK product.
TL;DR
- All 36V MAX POWER batteries fit all 36V MAX POWER tools. One platform, one battery fitment.
- 36V batteries do not go in 18V ONE+ tools. Ryobi says you cannot use 36V batteries in 18V tools or interchange chargers between voltage ranges, and that its 36V batteries are exclusively compatible with its MAX POWER range. We found no Ryobi adapter.
- The UK range runs 2.0Ah to 12.0Ah (RY36B20B up to RY36B12A), plus two EDGE packs.
- “High Energy” is Ryobi’s label for the 6.0Ah, 8.0Ah and 12.0Ah packs — it is a capacity tier, not a different fitment.
- 40V is the name Ryobi uses for its North American outdoor battery system (for example the OP4040A1 40V 4Ah battery). We have no Ryobi statement that 40V and 36V packs are interchangeable, so do not mix them.
Ryobi 40V vs 36V MAX POWER — the UK position
This is the single most common point of confusion, and it is a regional naming difference rather than a product difference in Ryobi’s marketing.
In North America, Ryobi sells a 40V range of outdoor power equipment, with battery part numbers using an OP- prefix (for example OP4050A and OP4040A1). In the UK and Europe Ryobi’s outdoor platform is 36V MAX POWER, with battery part numbers using an RY36B prefix.
We do not claim the two are cross-compatible. We found no Ryobi statement in either direction, the platforms use different part-number schemes, and Ryobi UK does not list 40V products. Anything you read asserting that 36V and 40V packs are “the same pack with different naming” is not supported by any Ryobi source we could find, and acting on it would put your warranty — and potentially your safety — at risk. If you own North American 40V kit and have moved to the UK, treat it as a separate system and keep its own charger.
Compatibility Rules
- Any 36V MAX POWER battery works across the 36V MAX POWER range: Ryobi says these batteries are compatible with the tools across its MAX POWER cordless range. A smaller pack gives less runtime.
- Higher Ah means longer runtime, not more power. Voltage determines power delivery; amp-hours determine how long it lasts.
- Heavier tools benefit from High Energy packs. Ryobi says its High Energy 6.0Ah pack delivers more power and longer runtimes than its standard MAX POWER packs and suits larger gardens.
- All 36V MAX POWER chargers charge all 36V MAX POWER packs. Charge time scales with pack size and charger rating.
What It Is NOT Compatible With
Ryobi UK is explicit on this point: “You cannot use 36V batteries in 18V tools or interchange chargers between different voltage ranges.”
- Ryobi ONE+ 18V tools — a different voltage range; Ryobi says 36V batteries cannot be used in 18V tools. See our Ryobi ONE+ 18V compatibility guide.
- Ryobi 4V USB Lithium tools — a separate low-voltage range.
- 18V ONE+ chargers — do not attempt to charge a 36V pack on a ONE+ charger.
- Other brands — there is no official adapter to any other manufacturer’s platform.
We found no Ryobi adapter between 18V ONE+ and 36V MAX POWER, and no Ryobi statement on third-party adapters. See our battery warranty guide for what the makers’ guarantees say.
Available Batteries (UK)
Every pack below is currently listed on Ryobi UK. Weights are Ryobi’s own published figures.
| Model | Capacity | Weight | Tier | Best for |
|---|---|---|---|---|
| RY36B20B | 2.0Ah | 0.83 kg | Lithium+ | Lightest — trimmers, short jobs |
| RY36B40B | 4.0Ah | 1.32 kg | Lithium+ | Good all-round balance |
| RY36B50B | 5.0Ah | 1.42 kg | Lithium+ | Best all-round choice for most owners |
| RY36B60B | 6.0Ah | 1.82 kg | High Energy | Mowing a medium lawn without a swap |
| RY36B80B | 8.0Ah | 1.88 kg | High Energy | Large lawns, sustained hedge work |
| RY36B12A | 12.0Ah | 2.8 kg | High Energy | Maximum runtime — heaviest pack |
| RY36BET40A | 4.0Ah | 1.18 kg | EDGE | EDGE-optimised tools |
| RY36BET80A | 8.0Ah | 1.96 kg | EDGE | EDGE-optimised tools, long runtime |
Genuine batteries, chargers and kits for this platform
As an Amazon Associate we earn from qualifying purchases. Genuine packs only; check the listing matches your platform before buying (affiliate links).
Before you buy: check that the size, fitting/bore and maximum-rated speed marked on the accessory match what your tool’s manual specifies. We have not physically tested these products; listings are compiled from published specifications. These are affiliate links.
Note the naming: the 6.0Ah, 8.0Ah and 12.0Ah packs carry the High Energy label. The two EDGE packs are branded “MAX POWER … EDGE Battery” and drop both “36V” and “Lithium+” from the product name — that is Ryobi’s own inconsistency, not a typo.
Charger Notes
| Charger | Rate | Ryobi’s published charge time |
|---|---|---|
| RY36C17A | 1.7A | 2.0Ah pack in ~70 minutes |
| RY36C60A (Fast) | 6A | 6.0Ah pack in ~1 hour |
| RY36C10A (Rapid) | 10A | 6.0Ah pack in 60 minutes |
One honest caveat: Ryobi’s own published figures make the 10A Rapid charger no faster than the 6A Fast charger on a 6.0Ah pack — both are stated as 60 minutes. We are reporting Ryobi’s numbers as published rather than assuming the faster charger must be quicker. If charge speed is your deciding factor, check the current spec sheet before buying.
Compatible Tools List (UK)
A representative selection of current UK 36V MAX POWER tools. All of them take any battery in the table above.
| Model | Tool | Category |
|---|---|---|
| RY36LMXSP46A | Brushless 46cm self-propelled lawnmower | Lawn care |
| RY36LMM46A | Mulch 46cm lawnmower | Lawn care |
| RY36HTX65A | Brushless 65cm hedge trimmer | Hedge trimmers |
| RY36HT60A | 60cm hedge trimmer | Hedge trimmers |
| RY36PHT50A | 2.9m pole hedge trimmer | Hedge trimmers |
| RY36CSX35A | Brushless 35cm chainsaw | Chainsaws |
| RY36CSX50A | 50cm chainsaw | Chainsaws |
| RY36CSX40D | Brushless EDGE-optimised 40cm chainsaw | Chainsaws |
| RY36BLXC | Brushless Whisper leaf blower | Blowers |
| RY36BPXB | WHISPER backpack blower | Blowers |
| RY36LTX40A | Brushless 40cm grass trimmer | Grass trimmers |
| RY36BCX30A | Brushless 2-in-1 brush cutter & line trimmer | Brush cutters |
| RY36PWX41A | Brushless 41Bar power washer | Cleaning |
This is a selection, not the full catalogue — Ryobi does not publish a headline count for the 36V MAX POWER range in the way it publishes “200+ tools” for 18V ONE+. Check Ryobi UK for the current full list.
Where to Buy Ryobi 36V MAX POWER Batteries
Ryobi 36V packs are sold through Ryobi UK’s own retailers and major online sellers. Because stock and part numbers move around, we link to a live search for the correct UK part number rather than a fixed listing that may go out of stock:
Always match the part number. Listings for “Ryobi 40V” batteries on UK marketplaces are likely to be North American imports or third-party packs; check what warranty applies before buying.
Sources
- Ryobi UK — Batteries and chargers (platform list: 18V ONE+, 36V MAX POWER, 4V USB Lithium)
- Ryobi UK — 36V MAX POWER batteries and chargers (part numbers, capacities, weights)
- Ryobi UK — How to choose the right Ryobi batteries and chargers (voltage interchange statement)
- Ryobi US — 40V range (North American platform naming)
Last verified against manufacturer sources: 15 August 2026.
Frequently Asked Questions
Does Ryobi sell a 40V battery in the UK?
No. Ryobi UK lists three battery platforms — 18V ONE+, 36V MAX POWER and 4V USB Lithium. The 40V name is used for the North American outdoor range. In the UK Ryobi’s higher-voltage platform is 36V MAX POWER.
Are Ryobi 36V and 40V batteries the same thing?
Ryobi uses the 40V name in North America and 36V MAX POWER in the UK and Europe. We found no Ryobi statement that they are cross-compatible, and they use different part numbers (RY36B in Europe, OP- in North America). Do not mix them.
Will a 36V MAX POWER battery fit my Ryobi ONE+ 18V tool?
No. Ryobi UK states plainly: “You cannot use 36V batteries in 18V tools or interchange chargers between different voltage ranges.” We found no Ryobi adapter between them.
Do all 36V MAX POWER batteries fit all 36V MAX POWER tools?
Yes. Any pack in the range — from the 2.0Ah RY36B20B to the 12.0Ah RY36B12A — fits any 36V MAX POWER tool. A smaller pack simply gives less runtime.
What does “High Energy” mean on a Ryobi battery?
It is Ryobi’s label for the higher-capacity 36V packs: the 6.0Ah, 8.0Ah and 12.0Ah. It indicates capacity and sustained output, not a different fitment.
Which 36V battery should I buy first?
For most owners the 5.0Ah RY36B50B is the sensible starting point — enough runtime for a typical lawn without the 1.82 kg-plus weight of the High Energy packs. If you mow a large lawn or run a 50cm chainsaw, start at 6.0Ah.
Can I charge a 36V battery on my ONE+ charger?
No. Chargers are not interchangeable between voltage ranges. Use a 36V MAX POWER charger: the RY36C17A, the RY36C60A fast charger or the RY36C10A rapid charger.