Skip to main content

Analyzing Battery Pack Construction and Internal Layout

3:55
20:11
158.4K views

At 3:55 in

The First behind the scenes look EVER allowed at How Milwaukee Tools builds power tools & batteries

What happens here

This step offers a detailed examination of how individual battery cells are meticulously organized and assembled to form complete battery packs. The video showcases various disassembled Milwaukee battery packs, providing a clear view of their internal wiring, interconnected cell groupings, and the structural components that hold them together. The presenter draws comparisons between different amp-hour (Ah) ratings and generations of M18 battery packs, such as 3.0Ah, 5.0Ah, 6.0Ah, 9.0Ah, and 12.0Ah, as well as M12 packs. This illustrates how factors like the number of cells, their specific arrangement (e.g., in parallel or series), and the connection methods are engineered to achieve diverse power outputs, extended runtimes, and varying form factors.

Goal: Understand how individual cells are assembled into functional battery packs and the physical differences between various capacities.

Tools and materials

  • Disassembled Milwaukee M18 Battery Packs — Demonstrating internal cell arrangement and connections

What they say

Hide

thing is that there was no evolution of the technology and what I mean by that is if you wanted to improve power or run time yet dad sells and when you add sells you're making it bigger you're making it heavier right and you're changing the voltage right so if you look back in like the 90s early 2000s that's why you saw 12 volt 14 for 18 24 36 40 like crazy different voltages nothing was compatible that point in time we did have some NiCad solutions but we were still known as a courted heritage company right for bansal's and in whole hogs and salsals and we decided to abandon this NiCad technology and go all-in on this thing called with you my own so this is the first lithium-ion power to a battery ever made and what I can tell you is since we introduced it we have continued to evolve the technology both from a performance standpoint as well as a durability standpoint to where you know now we're on we're talking our 9th or 10th generation of lithium-ion where others are in there like you mentioned gie summer on their first maybe second maybe third so you learn a lot along the way now it's important our stand is just because it says lithium doesn't mean that it's gonna be created equal okay so may have the same number on the side and may say lithium-ion you will get wildly different performance durability and life out these things so to paint a picture for you going back to what makes you know these these lithium packs really impressive it starts with the cell right so there are thousands thousands of cells available in the marketplace today a lot of competitors will you know open up the spec sheet right pick out a cell and then basically place a po2 that cell company and get a battery pack we take a very very different approach so during the cell development the developmental process we actually partner with the world leaders right to the Samsung's LG's Panasonic's of the world you have it and we have we develop the cells hand-in-hand with them so you got a chance to go through our battery lab and see how we fundamentally break down the cells and test them and bear right and actually create this technology with those partners so once you get to the point where you know you're happy with the the cell performance it has to work in all types of conditions too right so extreme heat extreme cold past the last you know fifteen hundred plus cycles cuz we make sure that someone's investing in us we're protecting their investment we own two eyes for the long term…

Auto-generated from the video audio.