Powerextra M-18 6.5AH Lithium Battery Replace for Milwaukee Battery 18V, Compatible with M-18 Battery 48-11-1850/48-11-1852/48-11-1840/48-11-1828/48-11-1820, M18 Lithium XC Battery (2 Pack)

So, I’ve been growing my collection of M18 tools, and wanted to see how a knockoff would stack up against a genuine Milwaukee battery. I fully expected these to last a couple of cycles, and then start degrading in overall performance and life. In all honesty, I’ve been using these alongside my genuine 5AH Milwaukees, and, the perform just as well, and last just as long, if not longer. I am very happy with them, and will buy some more when I need to. A lot cheaper, and work just as well as the real thing. Only complaint I actually have, is that the battery life indicator button is a pain to press.... that’s quite seriously my only complaint.

Sneaky Amazon. Wouldn’t let me post this review with 1 star so here we go again this is the truth so buy at your own risk1st off these 6ah batteries are lighter in weight then my oe Milwaukee 3 ah battery in the pic. 2nd the initial charge finished way to quickly to be charging up a battery claiming to be 2 x the capacity of my 3ah oe, last but not least is the fact that both batteries do not hold up in run time compared to my 10 year old Oe 3ah Milwaukee battery On the exact same pictured device charging up the 1 thing my iPad. So I know well, how long it goes to fully recharge it. And these so called 6 ah don’t even come close at double the ah ratingNice try china gth

Update: Same review bumped to 4 stars. The seller never contacted me about my review and just sent me a new battery. Excellent customer service will buy from again.Old Review: Good battery life, all plastic case so no protection but for the price it's understandable. 1 battery is still going strong going on a year now other one died about a month ago wish I could of got some more time out of it.

I received these batteries used one and one battery would not charge. I Asked for a replacement battery and they couldn't get one.

I ordered this exact set twice. First time was 2 years ago, the two batteries that came then still work great! The second set I bought in June, they were functional until I tried to charge them, they are both no longer responsive. Contacted customer service but they weren't any help.**Edit customer service contacted me again. Michle Smith, thank you for taking my concerns into consideration. I did not want replacement batteries, I want these repaired. They refunded half the cost which I will use to hopefully repair them. BMS boards aren't really expensive, so as long as the cells are good I should have a couple batteries. Yeah I put in some extra work, but it's kinda fun, ya know?I hate to leave the OG review, but maybe there is something up with the design. The two sets of batteries I have use different BMS boards, failed design change maybe?Good luck!

I purchased these for general around the house use. They sometime need me to seat and reseat on the charger 2 or 3 times before I get them to start charging. However, earlier today I took the battery I was using off my drill and onto the charger. A quick whiff of electronic burning smell as I continued cleaning up followed by a quick look around and I noticed the battery was smoking very lightly on the charger. I put one of my real M18s on the charger and it worked fine, as did the other powerextra so it clearly was not the charger. If I wasn't taking my time cleaning up this could have been a pretty ugly disaster. On one hand they worked pretty well for the most part. On the other hand, real M18s have not failed on me like this.UPDATE(12/23/21): I was contacted directly by the seller who offered a replacement battery for the one that failed. I did not put in a complaint so clearly they are paying attention and making a serious attempt to support their product. I will continue to use the new battery and the old one that is still good and update my review accordingly. For now, I will bump this up a start because at least they work pretty well and there is always a possibility that electronics can go bad no matter who makes them.

I use these batteries all the time and I actually have a few 12v and 18v. I had a problem I think one lost a cell and the battery gauge never showed so the battery was no longer any good. Well I reached out on here and they sent me 2 brand new batteries! If you have a problem they will stand behind it and this is the brand of batteries you need to buy for Milwaukee 12 and 18v. You won’t be sorry and if you have a issue they will take care of you

Purchased these because of the great reviews even with a few negatives. Had them for months now and they are now my go to batteries over the OEM lesser ah batteries it came with. No rubber on the bottom of the batteries but no issues with that. Powers the hackzall and my drill (mixing tile motor) very well. Tons of power and great battery life before needing a charge. Now i just have to buy the 1/2" impact.