Milwaukee M12B4 4.0Ah Lithium-Ion Battery - Red

Product Information

The POWERSTATE ™ Brushless Brushless Motor delivers 10,000-20,000 OPM while maintaining its speed under load better than the competition to provide the fastest cuts of any 12V competitor. We offer a variety of Milwaukee batteries and chargers to choose from, including options with different voltages, capacities, and technologies. This means that no matter what your needs are, you'll find the right battery and charger at Trade Counter Direct. Plus, with our close partnership with Milwaukee Power Tools, you can trust that you're getting high-quality products that are built to last.

Battery ENERGY is measured in Watt-Hours or Wh. Battery energy is equal to it's capacity multiplied by it's nominal voltage. A 2 Ah, 18 volt battery will have more stored energy than a 2 Ah, 12 volt battery. 2x18 = 36Wh versus 2x12 = 24 Wh REDLITHIUM™ protection with REDLINK™ digital overload protection to prevent users from damaging their cordless power tool investment in abusive situations At Trade Counter Direct, we are proud to offer a wide range of Milwaukee batteries and chargers. These high-quality batteries and chargers are designed to fit all Milwaukee tools, including both M18 and M12 models. The census collection is designed so that each group of postcodes should contain at least 100 people (50 in Scotland).POWER is measured in watts, 1 Watt = 1 Volt x 1 Amp. Maximum battery POWER OUTPUT is dependent on it's maximum current output and it's voltage. The Milwaukee 13mm bandfile is a cordless bandfile that delivers pneumatic performance, size, and features for professional automotive, industrial, and metalworking users. This cordless bandfile delivers fast spot weld removal and offers maximum control with two-speed settings for precision tasks and larger material removal requirements. The Milwaukee M12 FUEL band file 13mm is the best cordless powerfile with a tool-free 360° arm rotation, providing optimal mobility & access. The Milwaukee M12 FBFL13 cordless finger belt sander can be used with various 13 x 457mm belts, including the fine fabric belt for fine grinding, deburring, matting and finishing on all metals inc. stainless steel. So our battery is a 12V, 6Ah battery, with energy of 74 Watt-hours, maximum recommended current output of 30 Amps and maximum recommended power output of 12V x 30 A = 360 Watts. speed modes and variable speed trigger provide maximum control from taking down welds to precise work with inox, aluminium and wood.

I hope this tutorial clears things up. If you have questions or something is unclear, ask here and I will do my best to explain. Now let's dive in. Milwaukee uses Samsung INR18650-30Q cells in their M12 6Ah batteries. Watch ( https://www.youtube.com/watch?v=HLUx2-uYdZc ) if you are a nonbeliever. The datasheet specifies it's maximum recommended current draw is 15A per cell. Can the cell provide 20A, or even 30A? Absolutely, it will just get really hot which will permanently reduce it's lifespan and in extreme cases permanently lower the capacity. The battery has 6 cells, 2 banks of 3 series cells. Putting cells in parallel adds up their capacity and max output current. Putting batteries in series adds up their voltage. The cells are 4.2V 3Ah cells. Before we start, let's get some terminology out of the way. I see a lot of false information going around, with r/milwaukeetool being #1 source of bad info. I will do my best to explain the differences between the batteries. I am an electronics tech so I hope I know what I am talking about :) Can be used in extreme temperatures down to -20 °C without compromising on runtime and battery life Battery capacity is measured in Ampere-Hours, or Amp-Hours also abbreviated as Ah or A*h. Do not mix up Amperes with Ampere-Hours, they are totally different units. Battery capacity HAS NOTHING TO DO with it's maximum output power - watts. Amp-hours describes how many hours the battery can source certain current, with some caveats. So a 6 Ah battery can source 6 Amps for 1 hour, or 3 Amps for 2 Hours, or 1 Amp for 6 hours. This relationship is true only in ideal batteries. In reality, the relationship is NON-LINEAR. That means that if a battery can put out 1 Amp for 6 hours, the same battery can only put out 6 Amps for 45 minutes, and not one hour. There are chemical and thermal losses at higher current draw.Battery voltage is "PRESSURE". Battery current (Amperes) is "FLOW RATE". The maximum amount of current (Amps) a battery can source is limited by it's chemical properties. Its typically INVERSELY proportional to the cell capacity (Amp-Hours). Yes, the higher the Amp-Hours, the lower the maximum Amps the battery can supply. A 18v FUEL impact driver draws about 800 watts under heavy load, so slapping a 9Ah battery on it will not yield any higher performance, just higher runtime. Slapping a 1.5Ah on a chainsaw will not only get you about .3AH of useful capacity, the tool will stall very easily as the battery electronics will prevent you from overdrawing it and you will not get anywhere near the output power the tool needs. NB: I do not work for Milwaukee, I am not sponsored by them or anyone else, and I have no conflict of interest as I do not benefit from sales of Milwaukee tools, neither is this subreddit. For Scotland, 2011 data is shown (update coming soon, the Scottish census was delayed by a year unlike the rest of the UK). How does it compare to a M12 4Ah battery? The 4Ah battery uses 2 banks of three 2 Ah, 20A cells. Let's write out the specs: