Milwaukee M12B4 4.0Ah Lithium-Ion Battery - Red

Product Information

tool-free head adjustment allows the best handling for each working environment and provides compact storage. 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. 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 :)

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. 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: 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. Carlocca Business Park, Unit 19, Hellidon Close, Cariocca Business Park, Manchester, Greater Manchester, M12 4AHNow 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.

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. 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.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. REDLITHIUM™ protection with REDLINK™ digital overload protection to prevent users from damaging their cordless power tool investment in abusive situations For Scotland, 2011 data is shown (update coming soon, the Scottish census was delayed by a year unlike the rest of the UK).

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. Reverse mode allows the user to choose the belt orientation to manage the direction of sparks / chips. 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 Can be used in extreme temperatures down to -20 °C without compromising on runtime and battery life 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).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.

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. 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. The census collection is designed so that each group of postcodes should contain at least 100 people (50 in Scotland).The vibration isolation tool design minimises vibration, making cuts more comfortable with less fatigue. 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. speed modes and variable speed trigger provide maximum control from taking down welds to precise work with inox, aluminium and wood. Let's look at 9AH High Demand 18v batteries. These batteries are made up of 3 banks, 5 series LG HG2-18650 cells, which are rated at 3Ah, 4.2V 20A per cell. The 4.2 volt voltage is fully charged voltage, and drops rapidly to about 3.6 volts under load from where it slowly tapers off towards 2.5v as the battery discharges. So our battery is a 60A, 60A x 18V = 1080 watt battery. The energy of the battery is 9Ah x 18V = 162 watt hours. Don't believe me? Look at the bottom of your 9Ah battery. 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.