We own at least 10 different grease guns and only one of them is a pistol grip that I bought to replace the one that "accidentally" got left on the tracks. My son uses it to grease some of the zerks on the grader. I think the battery-powered grease gun would probably be almost as fast as a pistol grip. I.e. slow. But it would certainly be a lot easier on your hands. I just got done greasing the backhoe with that new locknlube tip with a manual heavy duty John Deere gun. That is definitely the way to go. I know some will say that the darn tip costs as much as a gun, And depending on the gun they may be right. But I just ordered two more of those tips. It made it so I didn't have to hold that tip on the zerk anymore. So I had both hands free to run the gun. No more holding the gun with one hand and operating the gun by pushing it against my hip. I spent way more time cleaning tips than I did greasing I will tell you that. Fast, easy, and not a lot of mess. I know the regular tips will sometimes hang on by themselves but it seems as I'm pumping the grease gun I wiggle the hose, and they fall off, and I lose some grease. Then have to grab the tip and reconnect it. Wash, rinse, repeat. Not today, clean the zerk, click it on, pump the gun, go on to the next one.