Recently, I tested several highly rated manual and power post hole diggers, and the Ryobi RY40710 Cordless Earth Auger took top honors. The Ryobi RY40710 is a cordless, battery-powered auger that ...

Ryobi 40V batteries are designed to be used with outdoor tools, so they're likely to come in contact with dirt, grass, leaves, and other outside debris, which they are typically equipped to withstand.