Review on Upgrade Your Milwaukee M12 Tools With Waitley 2 Pack 12V 3.0Ah Replacement Batteries: Get More Power And Capacity For Your Work by John Snook

I've had 2 of these for a little over a month now. They have been great at holding charge and working my older m12 Milwaukee 1/4" hex impact driver and a new m12 fuel haxsaw saw-zaw. Worked many of 12 hour days with only needing to charge once a day or every other day. However I have recently bought a new 2504-20 m12 fuel hammer drill and boy it will drain them down in half a day depending on if it's a new top I'm starting or just how much plumbing actually needs installed in the model home I'm plumbing. The Milwaukee hammer drill is awesome and powerful for a little while with these batteries but you can tell a difference between the Milwaukee batteries and these ones. But these are definitely better than another brand that were the 6.0 Ah I just bought a couple weeks ago. I saw that this brand now has the 6 Ah ones and I am wanting to try them out since the smaller ones I have from this supplier have been great.