20V vs 18V Power Tools: Demystifying Voltage, Performance, and Compatibility
Understanding the core differences between 20V and 18V power tools is essential for professionals and DIYers navigating cordless tool ecosystems. Despite marketing labels, both platforms use identical lithium-ion battery technology—five cells in series—delivering ~20V when fully charged and ~18V under load. This nominal voltage distinction is regional (e.g., "20V MAX"
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