Know Your Power Source


 Lithium-Ion vs. Nickel-Metal Hydride Batteries Part 2



Continued from November’s “Clipper Tip” article.


  1. Power: While Li-On and Ni-Mh batteries can store a similar amount of power at the same physical size, because Li-On batteries are lighter manufacturers like them because they can be made twice the size for more power without adding to the overall weight of a product. For example, the Andis Slimline Pro Li is bigger but lighter than the Andis Slimline Pro. However, the Andis Slimline Pro Li features a 2-hour charge and run-time compared to the Andis Slimline Pro which only has a 1-hour charge and run-time simply because of its battery properties. Another advantage of the Li-On battery is that cutting performance stays consistent, even when the battery is close to being completely drained.


  1. Durability: While both batteries are durable, proven technologies, the Li-On battery has the edge in terms of memory effect caused by charging – there is none. In addition, a Li-On battery may only see a 3% “self discharge” per month where energy loss with a Ni-Mh battery is much higher at 30%. Note that this is more of an issue for a consumer who might not use a tool every day.


After using all types of cordless tools, I’ve come to prefer Li-On powered tools over NiMh powered tools. In the salon, I have found that the Andis Slimline Pro Li and the Supra ZR detachable blade clipper best fit my needs. While I may fall short in my own personal charging habits, my Li-On powered tools perform as promised, withstanding an entire day of high-volume cutting. Best of all, they deliver the power of a corded product with freedom from a cord. This gives me the added benefit of performing faster haircuts because I’m not stopping to detangle cords. So if you are in the market for a powerful, reliable cordless tool, try Li-On battery technology.

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Kenny Duncan is a nationally known barber, stylist and educator, as well as co-owner of a 12-chair salon—Main Attraction Unisex Salon—based in Philadelphia. He is the barber for several Grammy Award-winning artists and has toured the world as the barber for the Lady Gaga production team. Kenny's styling work has also appeared in films such as "Fantastic Four" and "Creed" starring Michael B. Jordan. He is currently the Lead Educator for Andis Company.