waitley 18V 9.0Ah Replacement Battery Compatible with Milwaukee 18v 9000mAh 48-11-1820 48-11-1850 48-11-1828 48-11-10 Lithium-Ion Battery Cordless Power Tools

Great value

I have various M12 and M18 Waitley Batteries -- so far, and based on research, it is the only Off brand battery I would buy. None of my Waitley's have failed on me yet.These do NOT have the capacity of brand name batteries. I would say a 6.0 Waitley matches a 4.0 Milwaukee. This is based on usage and the weight of the battery. However, for the price, you can buy 3 Waitley batteries for the price of 1 name brand. If 1 out of 3 fail, you can toss it, and your still left with 2 batteries for the price of a Brand name Milwaukee battery.I have a 6.0 Waitley that is about a year old, charged once every 2 weeks or so.. It has performed well, and I use it in my most demanding devices like vacuums and blowers. Up until a month ago, it worked just fine in all devices, except it started to act up on my M18 Fuel circular saw and cause the motor to stall at start up... so I stopped using it on that one tool.FYI - Waitley 6.0 = 672 GramsWaitley 9.0 = 965 grams.So you are indeed getting more/bigger batteries in the 9.0.

Well I don't like that it failed. I have a few other of this make battery and they work great. This one was a champ until it ran out of juice and I tried charging it again. And yes I charged it fully before the 1st use. If I get one warranted out I will post that.

Works ok but much lighter then an actual Milwaukee 9.0 battery

I’ve been using this battery for a while now and it works just as good as an original. Will be purchasing another one soon

I have ordered a few different brand batteries and these are the absolute best

I bough 3 and they all only lasted less then 1 year then would not charge just the red and green light at the same time . yet I have had other 6 amp and 5 amp knock offs that I uase every day and are over 6 years old nowI have been buying org. milwaukee batteries from HD in the special buy section for less then 1/2 price and a few were 70% off price wise

For the price cannot beat it. If you expect an OEM Wilwakuee battery and feel this isn't the battery for you.But if you want something that is going to work and to power your tools it does a good job. I have been using it as my main battery for a week to see if it was going to crap out but it doesn't. Does a great job, and considering its 1/4 the cost of a new OEM battery, I'll buy two of them and go the distance.