Munikind 2Packs 20V 2.21Ah Lithium Replacement Battery

Not Milwaukee batteries. But they fit perfectly and power my ratchets really well !

These batteries never reach a full charge and only last a fraction of the original. I had to buy them because I dropped my Milwaukee drill into my sump pump. Miraculously, after fishing it out of 12" of dirty water and shaking it dry for a bit the drill and original battery still worked! It continued to work for about a year. I had 2 original batteries so one is still kicking and for some reason working much better than these new ones.

Though a generic battery, they fit my Milwaukee drill and have worked well for over two years.

One battery works one doesn't but I'm still calling that a win considering the price savings

I bought these batteries in hopes they would be a cheap alternative to the expensive Milwaukee Batteries.... I ordered 2 of them and they would not even charge straight out of the box... so i took a muti meter to check voltage and there was 0.0 volts.. i then figured i would take one of my Milwaukee batteries and shock them to life so the charger would recognize them so i went + to + and - to - for about 5 minutes each with no results at all still 0 volts! So, i then returned them for replacements.... got my replacements in a couple days threw them in the charger and got a green light for charged.. I then used them right away i noticed they had 2 out of the 4 lights lit on my tool... I used them anyways the worked fine but only lasted about 1/2 the time a normal Milwaukee battery lasts. i then put them on the charger fully used up and the green light came on it seconds for fully charged then shortly after started flashing red green for a fault. So, i grabbed another charger that was not a quick charger and i got a red light for charging for about 10 seconds then green light for charged the 10 more seconds later got the red green flashing again. I really wanted these batteries to work as did the guy above but it was a no go... So, in short I do not recommend these batteries to anyone! I am returning for my money back i guess that shows you get what you pay for.... Now if they can produce me with a good working product i am more than willing to review them again. I have over $40K in Milwaukee cordless M18 and M12 tools and have never tried an alternative to a Milwaukee battery. I bought other batteries at the same time as i bought these, 2 M18 and 2 larger M12 i will review them after i get more use out of em.. So far so good with the others, fingers crossed.

Only one down side that it doesn't always lock to a tool you have to check or you will lose the battery on your way

I bought a pair, they see light use, one battery will seat and clip into my tools just fine, the other fails about 3/16" short of fully inserting, I cant quite see the problem with how its made, this is like most junk, you get what you pay for. Next time, I will pony up for OEM batteries, while these folks still try to work out basic manufacturing ( like making a jig to see if you assembled it right, or if they came out of the plastic mold to spec, ect ). Guessing this is one of them literal back yard products someone makes.

Appears to have extra current capacity, but too early to rate battery life.