But have you used Ryobi's battery-operated grease gun? The ONE+ 18V Cordless Grease Gun itself is available through direct order from Ryobi, at a price of $159. But if you need the 2.0 Ah battery ...

We may receive a commission on purchases made from links. Not many people would consider a grease gun an essential addition to any personal tool kit, but they can be invaluable, and are one of the ...