Battery Voltages | Tool Lab | Ask This Old House

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In this Tool Lab video, This Old House master electrician Heath Eastman explains everything we’ve wanted to know about today’s power tool batteries. SUBSCRIBE to This Old House: http://bit.ly/SubscribeThisOldHouse. Master electrician Heath Eastman brings us to the Tool Lab to explain everything we’ve ever wondered about power tool batteries. With a brief history of the evolution of power tool batteries, Heath shows us what they look like inside and explains how manufacturers calculate battery voltage. Looking for more step by step guidance on how to complete projects around the house? Join This Old House Insider to stream over 1,000 episodes commercial-free: https://bit.ly/2GPiYbH Plus, download our FREE app for full-episode streaming to your connected TV, phone or tablet: https://www.thisoldhouse.com/pages/streaming-app Modern batteries have come a long way Today’s power tool batteries evolved quite a bit since the first cordless screwdrivers hit the market. The original tools were small and featured nickel-cadmium and nickel-metal hydride batteries. These batteries served the purpose, but today’s lithium-ion batteries are more powerful, compact, and longer-lasting. Under the Hood The inside of each battery contains a group of cells, which look similar to unbranded AA or C batteries. In nickel-cadmium models, manufacturers would arrange the cells and then wire them directly to a positive and negative terminal. In today’s lithium-ion models, the cells are still wired t

Published 2022-03-29 · Watch on YouTube ↗
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