Model: #P166

4.9 | 500 Reviews
RYOBI introduces the 18V ONE+™ 3.0Ah Battery & Compact Fast Charger Starter Kit . These LITHIUM+™HP batteries feature advanced electronics to allow you to maximize tool performance with added capacity to all 18V ONE+™ tools. With superior runtime, power, and performance, these batteries can take on more demanding applications than ever before with the introduction of HP technology. HP communication technology paired with Brushless tools maximizes performance in all applications, allowing users to make faster cuts, drive larger screws, utilize bigger drill bits, etc. They have a durably constructed frame for impact protection and have a built-in 4-bar illuminated charge indicator. These batteries can be paired with over 125 tools from RYOBI’s 18V ONE+™ lineup.
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This product is covered by a 3-year limited warranty.

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  • ·Over 2X runtime (compared to P102)
  • ·On-board fuel gauge allows you to easily check your charge
  • ·Lower resistance battery cells for maximum power delivery
  • ·HP communication technology paired with Brushless tools maximizes performance in all applications
  • ·Stands up to frigid weather conditions
  • ·Lithium-ion chemical composition resists drainage when idle
  • ·Recharge on any 18-Volt ONE+ dual-chemistry charger
  • ·Easily snaps into place and detaches with quick-release easy-access latches
  • ·Fade-free power for maximum performance
  • ·Battery delivers superior runtime, power and performance
  • ·New & improved compact battery charger for maximum portability and faster charging
  • ·HP Performance does not apply to Brushless Lawn & Garden Products


  • (2) P166 3Ah Lithium+HP Batteries, P118B Charger, Tool Bag, and Operator’s Manuals


18V ONE+™ 3.0AH BATTERY & COMPACT FAST CHARGER STARTER KIT is rated 4.9 out of 5 by 499.
Rated 5 out of 5 by from Excellent battery life When I purchased these batteries, I didn’t realize the battery life would allow me to complete multiple jobs. I use one of these batteries in a ryobi leaf blower, and the other inside of the impact driver. The impact driver is still at 50 percent battery after driving an entire box of deck screws into the neighbors project. The leaf blower is used every time I mow the grass and needs charged once every 3 or 4 mows. This is wonderful considering I only wanted the higher amps and didn’t worry about higher capacity. These batteries are great and so is the fast charging mini charger included in the kit. Thanks Ryobi, great product.
Date published: 2019-06-23
Rated 5 out of 5 by from Can't beat the price and quality I love this battery kit. Price wise the best value out there! I have used them in all my Ryobi tools.....Have used many other tools and batteries and I'm more than happy with this buy ( I've bought 2 more tools because I was so impressed). I have to give prop's to my 2 gal weed sprayer....paid for it self in 2 monthes. I use a 25 gal sprayer for years and would throw out atleast 1 gallon of mix when cleaning it. This sprayer is small, sits of the seat next to me in the side x side. Plus zero waste. Our yard (5 acres) has nevered looked so weed free! These batteries last for about 10 uses before recharging in the little sprayer! What a great deal....go Ryobi!
Date published: 2019-07-17
Rated 5 out of 5 by from Good size to power ratio These are the work horse of my Ryobi One-Plus system. I own at least a dozen tools that use these batteries and I have at least one battery for every tool, but the 3 ah are my favorite. My wife also does a lot of woodworking and these fit comfortably in her hand and easy for her to remove from the tools, the larger batteries, while they last longer are heavier and bulkier and are hard for her to grab the release levers to remove them from tools. Myself, I like the size and weight and the life of a single charge for most my tools the 3 ah is perfect. I would recommend larger sizes or a few of these if you are going to be running a random orbital sander on these.
Date published: 2019-06-17
Rated 5 out of 5 by from One of the Best Values in a Ryobi 18V One+ Kit Any Ryobi 18V One+ 2-Pack is a good value compared to the same P-Number single battery; combine that in a Kit with a Charger and a Storage/Carrying Bag and you have an excellent value. For those individuals that don't already own a Ryobi Charger, this is a very good entry-level Battery/Charger Combo; for those that would use this Kit in a mobile environment, the smaller portable Charger lends itself to recharging the spare (i.e. 2nd Battery) in the field where there is a 120 VAC source or in a vehicle with the use of a 12 Vdc to 120 VAC Inverter. In use the 3 AH P191 Batteries give excellent runtime and are lighter in weight than the higher amperage Ryobi batteries.
Date published: 2019-09-02
Rated 5 out of 5 by from Great value and product I love that it comes with two batteries. I have a large property and I hate when outdoor items only come with one battery and so you end up buying a second one which is almost the same price as the original purchase. I love that it the battery dies I already have one on the charger and can just switch it and keep going. As well I love how it has a little section so you can keep track of where the battery level is at. And something as simple as having the carry case. It keeps it put away and tidy and large enough I put any outdoor battery in it so I have one section. This is definitely worth purchasing and enjoying.
Date published: 2019-08-02
Rated 5 out of 5 by from We goin' CORDLESS ELECTRIC!! We were sick and tired of mixing gas for the gas operated edgers and blowers and dragging 50+ foot extension cords around to operate our electric hedge trimmer and then having to do tune-ups and overhauls on the gas engines after sitting idle in the off season that we decided to take the plunge and go CORDLESS ELECTRIC. After my usual shopping at various outlets and online for the best quality/price deal we came upon the Ryobi deal at Home Depot. Two batteries, charger and your choice of a FREE TOOL for $99.00!! This deal just could not be beat!! We are thrilled with our purchase and have sold all our old yard tools on Craigslist and used the money to buy additional Ryobi tools!!
Date published: 2019-07-06
Rated 5 out of 5 by from Nice price for two 3Ah batteries I got these during the recent "Ryobi Days" at Home Depot. After deciding to dump my corded power tools, for all cordless, and choosing the Ryobi 18v One+ for that switch, I knew I'd need batteries. This package is a great price (currently $99), for two 3Ah batteries. Add to that another charger, that while compact can still be wall mounted (I have no use for chargers that take up shelf space), and another nice bag for storing odds and ends around the shop, this is a great deal. The deal was made even sweeter, because during "Ryobi Days" I picked the Inflator/Deflator (P731) as my "free" tool.
Date published: 2019-07-14
Rated 5 out of 5 by from Great batteries. The kit comes with 2 18V ONE+ 3AH batteries and a compact fast charger. I really like that the charger can take up so much less room. When ever we are in a tighter work space this is our go to charger. I utilize my batteries most on the weekends when I do my lawn. I have the 18V mower and trimmer so I can run through batteries pretty quickly. These two 3AH batteries together get between 30 and 45 minuets of use on my mower. I haven't ever used one from fully charged to dead on my trimmer, but they power it great. These where an amazing addition to our sets of batteries.
Date published: 2019-06-29
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