Powerextra2 Pack 12V 3000mAh Lithium-ion Replacement Battery Compatible with Milwaukee 48-11-2411 48-11-2420 48-11-2401 48-11-2402 48-11-2401 12-Volt Cordless Tools

Reasonable price, fast shipping. Appear to work fine with Milwaukee charger. Fitment is very good and first several uses went well. Time will tell on overall reliability. Used with Milwaukee ⅜” power ratchet.

Very good batteries. Owned several. If taken care of they last for years

Great product exactly as described

Can't fault these on reliability or power output - I have quite a few of them and no failures so far. HOWEVER, the fit isn't what I would call excellent; they are difficult to remove, and I find this to be the case across my entire collection of M12 tools, which includes the jigsaw, a 1/2" FUEL drill, a 3/8" drill, a screwdriver (hex bit type), the soldering iron, a Dremel-clone rotary tool, a Hackz-all, six work-lights and two Rover flood lights. (There is a possibility that this problem has been corrected, as the ones I have are now pushing two years old.) When compared to the OEM batteries, you will notice that the black part of the battery is very rigidly attached to the red part; this is not the case with the OEM batteries, which have some slop ("play") between these two pieces which allows for a good tight fit with much easier removal. This slop is accomplished with the fit of the plastic snap-clips down inside the battery where the two parts are held together. (I took apart a dead OEM cell to find this out.) There is no way to correct this that I could figure out, so I remedied the problem by using a needle file to removes some of the plastic from the leading edges of the plastic snap fixtures on the black battery parts. Rounding off these clips/snaps plus a bit of silicone lube did the trick, and now all of my PowerExtra batteries fit all of my tools just fine. NOTE - the extended capacity power packs (4-, 5-, and 6-amp types) do NOT suffer from this problem, and fit all my Milwaukee tool and lights without modification..

These were inexpensive 12 volt cells. They hold a charge almost as well as the OEM batteries, not quite but almost. After a couple of months i started to have charging failures on one of the batteries, and set it aside, a week later the other had issues. I measured the battery voltage and the cells did not appear to be balanced. I assumed that the cells had started to fail, but then noticed that the terminal of the battery were not level like the OEM cells. I gently pried out the terminals slightly and the battery started charging properly. So these are fine, but need to have some maintenance occasionally. They are small and light, and the tools are easier to handle for longer periods of time, but you need to have more batteries.

The batteries charged really fast and held up for almost two days of daily use.

Worthwhile option for M12 tools

I bought 2 of these and had a problem, which turned out to not be the batteries, it was my device, but while I was messaging the seller about troubleshooting it, they sent me two new batteries just in case. I would recommend these because you can never have too many batteries on hand and these are a good way to stock up!