One High Capacity Lithium Ion Battery For Ryobi Power Tools (Single Battery), The P108 is the strongest battery in the Ryobi One+ lineup. At a whopping 4 amp hours, this has a long runtime, serving your needs through a variety of applications. Being the flagship battery for the One+ family, you can be sure that it will work for over 70 18V power tools from Ryobi. It also acts as a fuel gauge. At the push of a button, you?ll be able to see how much charge is left, so you can prepare other batteries as needed. The P108 also boasts one of the fastest charging times out of the Ryobi batteries. It can go from empty to full in as little as 60 minutes! Unlike its NiCad cousins, this lithium ion battery will not drain when not in use, so you don?t have to keep it constantly charging. Simply plug it into your tools when you need it, and rest assured in its reliability. Remember, Ryobi means power done right. ONE+ COMPATIBLE: Works with any power tool from the Ryobi One+ System. Use this on your cordless routers, circular saws, reciprocating saws, blowers, and more MORE POWER: This extra large battery holds over 4 times more power than the other, smaller models QUICK CHARGE: The P108 can be fully charged in as little as one hour FUEL GAUGE: An onboard fuel gauge lets you know how much power you have before it needs recharging FADE-FREE POWER: The P108 lithium ion battery will work at full strength for as long as the battery is charged, so you don?t have to worry about your tools slowing down when it comes to crunch time ONE+ COMPATIBLE: Works with any power tool from the Ryobi One+ System. Use this on your cordless routers, circular saws, reciprocating saws, blowers, and more QUICK CHARGE: The P108 can be fully charged in as little as one hour FUEL GAUGE: An onboard fuel gauge lets you know how much power you have before it needs recharging FADE-FREE POWER: The P108 lithium ion battery will work at full strength for as long as the battery is charged, so you don?t have to worry about your tools slowing down when it comes to crunch time