Top 5 Best Cordless Finish Nailer [Top Pick & Review]- who makes the best battery powered finish nailer cordless ,The finish nailer from Dewalt is powered by a 20V battery that can offer you the facility of working for long. Due to the battery-powered option, you don't have to mess with cord, hose, gas, propane, or these type of things.Best Cordless Finish Nailer Review to Buy in 20219/10/2019· This product is easily exposed to wear and tear. Charger and battery is sold separately. 3. Ryobi P325 One+ 18V Battery Powered 16 Gauge Finish Nailer. Ryobi P325 One+ is a cordless powerful finish nailer that comes with a switch on its back. This switch has been introduced to enhance the actual depth of nail driving.