Ryobi is giving away its 18V ONE+ HP PBP004 4.0Ah High Performance battery with the purchase of any of ten select 18V cordless tools at Home Depot. The promotion started showing on Home Depot product pages around August 3, 2026, and the battery auto-adds to your cart at checkout when you select a qualifying tool. No promo code is required.
What You Get for Free
The PBP004 is Ryobi’s HP-branded 4.0Ah pack, part of the company’s high-output battery tier that pairs with brushless HP tools. It normally sells for $129 MSRP, currently on sale at $89, and is being bundled at no charge with these eligible tool purchases:
- Ryobi One+ HP 18V 4-1/2 in. Angle Grinder with 3-Piece Cutting Wheel Set: $105.47
- Ryobi One+ HP 18V Oscillating Multi-Tool with 4-Piece Blade Set: $120.97
- Ryobi One+ HP 18V 7-1/4 in. Circular Saw with 24T Blade: $147.97
- Ryobi One+ HP 18V Oscillating Multi-Tool Kit with 2.0Ah Battery: $188
- Ryobi One+ HP 18V 5 in. Random Orbit Sander Kit with 2.0Ah Battery: $218
- Ryobi One+ HP 18V 4-1/2 in. Angle Grinder Kit with 2.0Ah Battery: $218
- Ryobi One+ HP 18V 7-1/4 in. Circular Saw Kit with 2.0Ah Battery: $228
- Ryobi One+ HP 18V Reciprocating Saw Kit with 2.0Ah Battery: $228
- Ryobi One+ HP 18V Compact 1/2 in. 4-Mode Impact Wrench Kit with 2.0Ah Battery: $228
- Ryobi One+ 18V 2-Tool Extended Reach Ratchet Kit (1/4 in. and 3/8 in.): $348
The PBP004: What You Get With the Free Battery
This pack uses higher-output cell construction that delivers more current under load than the standard 4.0Ah pack. For brushless HP tools, that translates into longer sustained performance and fewer brown-outs during heavy cuts. It works across the entire Ryobi 18V ONE+ ecosystem, so it slots into any tool you already own, and it carries the same 3-year warranty as other Ryobi HP batteries.
Most Ryobi starter kits ship with a 1.5Ah or 2.0Ah battery. Adding a 4.0Ah HP pack effectively doubles your runtime per charge and unlocks the headroom needed for tougher applications like metal grinding, dense lumber cuts, and prolonged reciprocating saw work.
Standout Picks From the List
The bare $105.47 angle grinder is the cheapest entry point and pairs well with the free HP battery for anyone needing a small cutoff tool for rebar, pipe, or rusty hardware. At $147.97 bare, the 7-1/4-inch circular saw with 24T blade is a strong framing upgrade for shed builders and deck projects. The $228 reciprocal saw kit ships with a 2.0Ah battery, so you walk out with two packs (the included 2.0Ah plus the free 4.0Ah HP), making it the best total-package value on the list.
Why Bare Tool Purchases Still Make Sense
If you already own a Ryobi charger and at least one battery, grabbing a bare HP tool for $105 to $148 and getting a free 4.0Ah HP pack is hard to argue with. Bare tools are typically 30 to 50 percent cheaper than their kit counterparts, and bundling the free battery closes the gap for DIYers who don’t need the included 2.0Ah pack or charger.
Why This Matters
One of the most useful batteries in the Ryobi 18V ONE+ lineup. It carries the HP designation, meaning it has the higher discharge rate needed to drive brushless tools under load, and at 4.0Ah it sits in the sweet spot for general DIY work, trim carpentry, and homeowner projects. Adding a free HP battery to any of these ten tool purchases effectively knocks $89 off the price, which makes the bare $105.47 angle grinder the standout value pick of the bunch.
Ryobi’s free-battery promotions have been a recurring Home Depot staple since spring, but most of those offers have been tied to OPE or combo kits. This one targets the cordless power tool side, and the eligible list skews toward HP brushless tools where an HP battery actually delivers real performance.
How to Shop It
The deal is on Home Depot’s product pages right now. Add a qualifying tool to your cart, and the PBP004 will auto-apply as a free line item. You can only claim one free battery per qualifying tool purchase, and there’s no published end date. The standard “while supplies last” applies, and these kinds of Ryobi free-battery promos have historically run one to two weeks before expiring quietly.
Pro Tool Reviews flagged the promotion on August 3, 2026, and noted the same lack of end date. If you’ve been on the fence about a Ryobi HP tool, the $89 effective discount makes the math easy.
You can see the full list and the deal landing page on the Home Depot PBP004 product page.