40V High Capacity

Pros & Cons

At a Glance

Overview

This RYOBI 40V Lithium-Ion 4Ah High Capacity battery is a genuine pack built for RYOBI's outdoor-power lineup — mowers, trimmers, blowers, chainsaws — priced at $104.99. It's a completely separate platform from RYOBI's ONE+ 18V tools, so this is strictly for the 40V outdoor-equipment side of the brand.

We haven't tested this pack ourselves. This is a fit-and-availability breakdown, including a stock caveat worth knowing before you buy.

Who it's for

This pack is for RYOBI 40V outdoor tool owners who need more runtime than a base-capacity pack provides — mowers and other high-draw yard equipment benefit most from the extra capacity. If you own ONE+ 18V hand tools instead, this battery won't help you; that's a different platform entirely.

Compatibility

All RYOBI 40V batteries fit all RYOBI 40V outdoor tools, and this pack is no exception. RYOBI 40V and ONE+ 18V do not share batteries or chargers — they're built as separate systems, so double-check which platform your tool belongs to before ordering.

Genuine vs. aftermarket 40V packs

This is a genuine RYOBI pack backed by RYOBI's 3-year warranty. Outdoor power tools tend to run hard for extended stretches — mowing a lawn, running a trimmer — which is exactly the kind of sustained draw where an unverified aftermarket cell's quality matters most. Genuine is the more defensible choice here.

Buying notes

At the time of this write-up, this listing shows low stock, so availability may be inconsistent — worth checking current status before you commit to it as your primary or only spare pack. At $104.99 it's mid-range pricing relative to smaller-capacity 40V packs, reflecting the step up to 4Ah.

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