13:18 is the answer everyone is looking for

So if I needed to bypass a Milwaukee charger in an emergency I would hit the third terminal from left or negative. Good stuff dude most are scared of chargers. I added a Noctua fan to mine. -40 degree drop

Cool to see, but it says the amperage output on the sticker.

Typically if you're pushing the same number of amps as amp hours it wont really affect battery life. Pushing 6a in a 12ah battery isn't going to harm it. Pushing 6a into 6ah is about maxed out. Dewalt called it 20v to avoid confusion with their old 18v NiCad packs.

Thanks for posting the useful information. Milwaukee quotes nominal voltage for the M18 but maximum voltage for the M12. For an M18 battery the charge controller is inside the pack and not in the "charger". The controller inside the pack does have fine wires going to the positive terminal of each cell so it does appear that it does balance the cells when it charges. The five pin connector has the outer pins conneced direcly to the cell pack. The middle pin provides power to the charge controller inside the pack. Pins 2 and 4 carry the communication signals between the microcontroller in the pack and the one in the "charger" or the tool.

Hopefully your insurance company is not watching this video! 😂

Interesting point about the lack of balancing of the cells. I noticed that Makita batteries and chargers have an additional seven copper leads, besides hot and neutral. Perhaps five of these are for monitoring the 5s cells. Would this make sense, or would there need to be at least 10 connections, one for each of the 10 cells in a standard 18v battery?

6 amps is way to much for like one of the 2 Ah batteries unless it has a way to decide what battery is on it but since that 5.0 was getting 6 amps but i mean whats recommended 1/2 C so thats not bad for the 5Ah but the 3,4 and 2 that 3 amps is ab it much and also im pretty sure that the balancing is happening on the circuit in the battery

You know enough to be dangerous, the balancing leads do not carry current, they monitor voltage and balance across the cells. Exactly like an RC car charger. The cells do not get charged individually they are charged as a pack and balanced through the balancing leads. All lipo and li-Ion packs work this way. Balancing leads will let the charger know of a dead cell or a cell that's hogging all the current which will shut the charger off all together and give you the error lights. Also the HD batteries are using the larger 21700 cells vs the 18650 cells in the smaller packs

A lot of anecdotal guessing in this video based off of what other companies do... the Milwaukee batteries have the balancing built into the PCB (battery management system) within the pack itself. So you have 5 pins on a Milwaukee battery. Negative, J1, charge, J2, and Positive. The J1 and J2 are data lines which allow the battery to “talk” with the charger or the tool it is connected to. The positive and negative leads are connected to each end of the cell groups. Yes this means the battery doesn’t have to have anything built in to cut off the output when it runs too low, it just tells the tool to turn off. When connected to the charger, the charger applies voltage to the charge pin on the battery, and the battery management system in the pack handles the balancing.

Am I hearing things or did he say LiPo battery? Those are lithium ion AKA L i o n

It’s still fast compared to cheaper brands I had some tools purchased at an online store and those cells of that unknown brand took like 3hrs and lasted 25mins hahah , my other concern for the fast charger you got is if the 12v batteries will also charge at double amperage or just works for m18 batteries ? I have no issues w the standard included charger of the m12/18 but today I was super surprised at a tool I won’t promote the name 😂 but it won the m18 , it’s also 18v lithium tech and the mah is 2AH but guess what it charge at around 7ah I was super impressed the power consumption was over 160w that makes this batteries of this brand easy to charge in 20mins they were don’t from 1-4 bars but I do have my doubts the internal cells can even like this type of amperage going through them unless they were some great brand I won’t recommend such power going into unknown cells . Anyways now I know my standard Milwaukee charger is slow 🤣 it’s just like in cellphone newer chips newer cells allow more juice to be dump anyways hope someone learns from all this info blessings.

I think I've seen a 5.0 out torque a 2.0 before. aren't those the same spec???

Do a vid testing that gen 3 impact driver.

Yeah, those are not LiPo (Lithium Polymer) batteries, they are Lithium Ion. Similar, but different.

I don't believe the word of any one who says "send it"