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Last tested March 2, 2026

RYOBI ONE+ 18V 4.0Ah Battery with LED Fuel Gauge (PBP005) product image

Ryobi

PBP005

$54.99

8.5
Buy on Amazon
Weighing a cheaper aftermarket pack? Read our honest genuine vs aftermarket batteries guide first.Read the guide →

The Verdict

This genuine ONE+ 18V pack pairs real runtime with a built-in fuel gauge — a straightforward upgrade for anyone already in the RYOBI ONE+ ecosystem.

Best for:

Genuine OEMMax RuntimeHigh-Output & Heavy Tools

Pros & Cons

Pros

  • Genuine RYOBI ONE+ pack backed by RYOBI's 3-year warranty
  • LED fuel gauge shows remaining charge at a glance
  • 4.0Ah capacity gives meaningfully more runtime than RYOBI's 1.5Ah packs
  • Fits the entire ONE+ 18V tool ecosystem

Cons

  • Costs more than RYOBI's smaller 1.5Ah or 2.0Ah packs
  • ONE+ platform tools tend to be lighter-duty than pro-grade brands

At a Glance

ONE+ 18VPlatform
18VVoltage
4 AhCapacity
high-outputType
YesGenuine OEM

Overview

The RYOBI PBP005 is a genuine ONE+ 18V 4.0Ah battery with a built-in LED fuel gauge — a step up in both capacity and convenience from RYOBI's base 1.5Ah/2.0Ah packs, priced at $54.99. It fits RYOBI's entire ONE+ 18V ecosystem, which is the platform's real selling point: one battery family across 300+ tools going back to 2011.

We haven't bench-tested this pack. This is a straightforward look at fit, the fuel gauge feature, and where 4.0Ah sits in RYOBI's lineup.

RYOBI ONE+ 18V 4.0Ah Battery with LED Fuel Gauge (PBP005)

Buy on Amazon

Prices may change · Free shipping with Prime

Who it's for

This pack is a solid upgrade for anyone already running ONE+ 18V tools who wants more runtime than a starter 1.5Ah pack provides, and who values being able to check remaining charge without pulling the battery off the tool. It's not the platform's highest-capacity option, but 4.0Ah is a meaningful step up for daily use.

Compatibility

Every ONE+ 18V battery from 2011 onward fits every ONE+ tool — that's RYOBI's headline compatibility promise, and this pack is no exception, from basic drivers up to HP High Performance tools. It will not fit RYOBI's 40V outdoor-power tools; ONE+ 18V and 40V are entirely separate platforms with no shared batteries or chargers.

The fuel gauge, and genuine vs. aftermarket

The LED fuel gauge is a real convenience — you can check remaining charge at a glance instead of guessing or waiting for the tool to bog down. As a genuine RYOBI pack, it also carries RYOBI's 3-year warranty. Aftermarket ONE+-compatible packs exist, often without a fuel gauge and always without RYOBI's warranty backing — worth weighing against the modest price difference on a pack this affordable already.

Buying notes

At $54.99, this sits above RYOBI's smaller 1.5Ah/2.0Ah packs but is still budget-friendly relative to pro-grade brands. Keep in mind ONE+ tools generally run lighter-duty than Milwaukee M18 or DeWalt 20V MAX gear, so the capacity math looks a little different across brands.

My Verdict

This genuine ONE+ 18V pack pairs real runtime with a built-in fuel gauge — a straightforward upgrade for anyone already in the RYOBI ONE+ ecosystem.

How we picked this

We do not bench-test individual cells and never claim runtime numbers we did not measure. Picks are sorted by platform fit, genuine-OEM vs aftermarket risk, stated capacity, and live Amazon availability. Compatibility is not a safety endorsement — always verify voltage and platform for your exact tool.

See our full methodology →

RYOBI ONE+ 18V 4.0Ah Battery with LED Fuel Gauge (PBP005)

$54.99

Buy on Amazon

Prices may change · Free shipping with Prime

Full Specifications
PlatformONE+ 18V
Voltage18V
Capacity4Ah
Typehigh-output
Genuine OEMYes
Fuel GaugeYes
Warranty3years

Frequently Asked Questions

Does the PBP005 fit older ONE+ tools, or only newer ones?
It fits any ONE+ 18V tool from 2011 to today — RYOBI has kept the platform fully backward and forward compatible.
What does the fuel gauge actually show?
An LED readout on the battery itself showing remaining charge level, so you can check status without needing to mount it on a tool first.
Will this battery work in my RYOBI 40V mower?
No. ONE+ 18V and RYOBI 40V are separate platforms — different voltage, different battery and charger footprint. They don't cross over.

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Head-to-Head Comparisons

RYOBI ONE+ 18V 4.0Ah Battery with LED Fuel Gauge (PBP005)

$54.99

Buy on Amazon

Prices may change · Free shipping with Prime