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Model # P108

Internet # 203466938

Store SKU # 615906

18-Volt One+ High Capacity LITHIUM+ Battery

This item has been discontinued.
The Home Depot no longer carries this specific product.

$99.00 /each
  • Over 50 great ONE+™ tools work with the same 18V battery platform
  • Any 18V ONE+™ blue or green tool works with any 18V ONE+™ battery
  • 4Ah LITHIUM+™ technology provides up to 4X the runtime of Ni-Cd




Model # P108

Internet # 203466938

Store SKU # 615906

Never get caught powerless, as this RYOBI 18 volt lithium-ion battery has a built-in four-bar illuminated charge indicator to warn of diminishing capacity. This LITHIUM+ high-capacity battery stands up to frigid weather conditions down to 14 degrees F (-10 degrees C) and is engineered to run four times longer than a NiCd high-capacity counterpart. Strap this pack onto any 18 volt cordless product in the ONE+ lineup for supreme performance.

Info & Guides

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Product Depth (in.) 
Product Height (in.) 
Product Width (in.) 
Battery Power Type 
Lithium Ion 
Color Family 
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Power Tool Accessory 
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Power Tool 
Voltage (volts) 


Rated 4.6 out of 5 by 98 reviewers.
Rated 1.0 out of 5.0 by defective Have owned the combo kit with trimmer and hedge cutter, great tool but Battery is defective does not charge at all. Cannot purchase a new p108 but they are not on the recall .has 008 in number not 028. Last Ryobi product I will buy. May 6, 2013
Rated 5.0 out of 5.0 by Waaaay better than NIcad I bought a 4pc ryobi combo set 2 years ago. for the first 6 months i loved my tools then the nicad batteries started to die faster and would not hold there charge for more then a week or 2 at the most. so i was back in home depot recently looking at tools and seen they have come out with a new 4 amp hr battery. so i decided to buy one and give it a try and everything they say on the packaging is true. i diffidently notice more power from my saw and it last way longer in fact i was cutting 2x4's all day and drilling and i still have 2 bars left. The battery gauge is awesome its like the gauge on my professional Milwaukee red lithium drill set it have. I highly recommend getting one over the old nicad. April 20, 2013
Rated 5.0 out of 5.0 by Best battery Ryobi has by far I just bought 4 of these while they were on sale in October for buy one get one free. Good luck getting the website to cooperate though as it will keep saying no such item exist. I finally managed to get it to work and bought two 2 packs. Only way I would ever buy these personally as at $100 each that is pretty much robbery, but $50 each I can stand. Any way I just tried one out with the Grinder and wire wheel, which with the other Lithium+ compact battery was utterly useless because it only lasted at most 2 minutes tops. Seriously I really mean just 2 minutes max. Thus to me the Grinder was of no value at all with those batteries. Just now I stripped rust off of a wrought iron chair, this battery lasted exactly 13 minutes of non stop pretty hard use. That doesn't sound like a lot but 13 minutes means I have a usable grinder now. I was able to strip about 85% of the chair whereas with the compact lithium+ I could barely even get started before the battery was dead. It also gave the Grinder a bit more Oomph which is an added plus. So to me the Compact batteries are just for light duty, like drilling a few holes and putting in some screws and keeping the drill lighter weight. But for most everything else these High Capacity Lithium+ are the ONLY battery to have. Sure glad I bought 4 when I could at 1/2 price. October 18, 2013
Rated 5.0 out of 5.0 by Power Horse This battery is the best yet. I saw a big power increase with all of my Ryobi tools right a way. I have the chain saw but never used it because it would bog down when I tried to cut a small limb. The 4x battery changed that, I cut right thru a 8" dia. limb and the battery still had plenty of power left. I'm going to HD and get another one today. January 22, 2013
Rated 5.0 out of 5.0 by Huge Capacity This is a battery that will last for ever I use it in my saws. The big capacity makes it last. It went through 10 pieces of 1 inch thick 4ft by 9ft pieces of plywood and still had just enuff power to run my drill to put a few screws in. Excellent product. December 10, 2012
Rated 5.0 out of 5.0 by Great battery, pricey The power output and runtime are MUCH better than with the original Ni-Cd batteries. Love the built in power meter as well. Reduction in weight is noticeable as well. Only gripe is the higher price. If it came down by $15 or so, I would have bought two instead of just the one. $100 for a battery is hard to swallow when entire tool sets are $200-$300. November 5, 2013
Rated 5.0 out of 5.0 by Lasts a lot longer than standard battery, and stronger. We use this battery for shooting staples it lasts much longer than standard battery. YOU WILL GET THREE TIMES THE STAPLES. We shoot stainless steel staples into a nailer board made of epoxy resin its harder than wood. All we use is Ryobi cordless hand tools now and been great so far. Wrench from alternascapes inc. September 29, 2015
Rated 1.0 out of 5.0 by Great system random bad batterys I have almost every tool from both the green and the blue set ups. Great tools and a price point that can't be beat. The problem I come into is with the new batteries. I have the 6 battery charger and enough batteries to load it up twice with "p108" batteries. One out of every 5 or so batteries I purchase is a dud. Full charge and they run a short time before needing to charge. After pulling them off the charger they indicat full charge but place them in a tool they will now show dead. I love the full system but there needs to be better quality control on there batteries. September 3, 2015
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