Milwaukee M12B4 4.0Ah Lithium-Ion Battery - Red

Product Information

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. 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 Reverse mode allows the user to choose the belt orientation to manage the direction of sparks / chips. The vibration isolation tool design minimises vibration, making cuts more comfortable with less fatigue.

tool-free head adjustment allows the best handling for each working environment and provides compact storage. speed modes and variable speed trigger provide maximum control from taking down welds to precise work with inox, aluminium and wood. 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.

124 Companies in M12 4AH, Cariocca Business Park, Hellidon Close, Ardwick, Manchester

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. 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.

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.What is 18650, 21700? These are cell sizes, 18650 means the cell is 18 mm in diameter and 65 mm long. 21700 means it's 21 mm in diameter and 70 mm long. The bigger the cell, the higher the Amps it can source, and typically the higher the Amp-Hour capacity of the cell is. A 2Ah 21700 cell can put out 30-40 Amps, while a 2Ah 18650 cell can put out 15-23 Amps. Milwaukee 1.5, XC(3.0), XC 4.0, XC 5.0, XC6.0 and HD 9.0 batteries use 18650 cells. Milwaukee HO 6.0, 8.0 and 12.0 use 21700 cells. For comparison, a HO 6.0 will absolutely destroy XC6.0 in terms of Watts is can provide, despite equal ENERGY (Watt-hours) and CAPACITY (Amp-hours), due to much higher CURRENT (Amps) 21700 cells can provide. This is done to preserve the anonymity of the people in that area, as some postcodes cover a very small area, sometimes a single building. Can be used in extreme temperatures down to -20 °C without compromising on runtime and battery life For Scotland, 2011 data is shown (update coming soon, the Scottish census was delayed by a year unlike the rest of the UK). 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.

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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. 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 :) 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.

Carlocca Business Park, Unit 19, Hellidon Close, Cariocca Business Park, Manchester, Greater Manchester, M12 4AH 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. 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. The Milwaukee M12 B4 12v 4.0Ah Li-Ion Battery delivers up to 2x more run time, up to 20% more power and up to 2x more battery life compared with other Lithium-Ion technologies and/or with previous MILWAUKEE® battery technology (Results depend on tool and application).Carriocca Business Park, Unit 87, Hellidon Close, Cariocca Business Park, Manchester, Greater Manchester, M12 4AH Now let's compare 9.0 HD battery to a 6.0 High Output 21700 based battery. The 6.0 HO battery uses samsung 3.0 Ah, 43A cells, 2 banks of 5 cells in series. So a 6.0Ah can produce 86A x 18V = 1548 Watts. Here we see again that a 6Ah HO battery can produce more power than a 9Ah. Does it means 9Ah are useless? No! Again, use a battery best suited for your applications! A 9Ah will work well in the m18 grinder or a grass trimmer, but will underperform in the chainsaw. Remeber that the maximum power that tool will demand depends entirely on the motor and tool design. 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: