![]() Maybe they’re salvaged and relabeled (possibly damaged or depleted) cells, or they could be true counterfeits, without the same quality-control and built-in safety features as the brand-name cells. Or, at the very least, they weren’t labeled like any known cells from big-name suppliers (such as Samsung, LG, Panasonic, and Murata, among others), which do quality-control tests to make sure the cells conform to industry safety standards and perform predictably. The most important difference we found was that the knockoff packs used no-name battery cells. When we opened up the packs, it was obvious that the knockoffs were of a much lower quality than the genuine packs. More importantly, they may pose some safety risks. ![]() He found that although the third-party packs run the vacuum fine (at least while they’re new), they are “cheaply made battery packs” that “for sure won’t last as long” as the genuine Dyson packs-and probably not even long enough to make their low price worth it. We hired Lee Johnson, who has 10 years of experience designing and testing electronics (including a stint at NASA), to test and dismantle a few replacement battery packs for the Dyson V7. ![]() If you’re looking to replace the battery pack on your Dyson cordless vacuum, we think your best bet is to skip the knockoff packs you can find on Amazon or AliExpress, and stick with the genuine Dyson packs-as painfully expensive as they are. ![]()
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