Dyson Vacuum Battery modification / upgrade

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If you are looking to replace the battery pack on your Dyson cordless vacuum, it is advisable to avoid knockoff packs found on Amazon or AliExpress. Instead, opt for genuine Dyson packs, despite their high price.

We hired Lee Johnson, an expert with 10 years of experience in designing and testing electronics (including at NASA), to evaluate and dissect several replacement battery packs for the Dyson V7. Although third-party packs function adequately (especially when new), Johnson discovered they are poorly constructed and will not last as long as genuine Dyson packs. Ultimately, they may not be worth the low price due to potential safety risks.

Upon examining the packs, it became evident that the knockoff versions exhibit significantly lower quality than the authentic ones.

The most critical difference identified was that the counterfeit packs utilized unbranded battery cells. They were not labeled with known manufacturers such as Samsung, LG, Panasonic, or Murata, which conduct strict quality-control tests to ensure their cells meet industry safety standards and perform reliably. These unbranded cells could be salvaged, relabeled, or even counterfeit, lacking the safety features and quality assurance present in brand-name cells.

While we won't delve too deeply into the specifics of battery safety certifications, it is essential to note that lower-quality cells can lead to performance issues, shorter lifespans, and safety hazards. The Dyson battery pack, on the other hand, is manufactured with cells from Murata, a reputable lithium battery supplier.

The genuine Dyson battery pack indeed incorporates cells from Murata, ensuring a reliable performance.

The PowerExtra knockoff pack, however, employs no-name cells, which typically possess only half the advertised capacity and might lack crucial safety features. Johnson noted the sloppy soldering observed on the bottom right of the pack.

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Moreover, the knockoff packs are poorly assembled. Johnson criticized the soldering on one pack (by PowerExtra, priced at $35) as "sloppy," suggesting that the excessive silicone insulation was a likely workaround for subpar construction needing extra protection against short circuits. In a comparative test, it is clear that these packs are unlikely to endure typical wear and tear like genuine packs.

While some Dyson packs may fail within a year (covered under warranty), anecdotal evidence suggests that users often experience premature failures with knockoffs, frequently happening just after a few months.

The third-party packs also lack certain components found in genuine Dyson battery control boards. While we cannot precisely define the functions of Dyson’s microcontrollers, we believe the knockoffs miss critical charge/discharge monitors and safety features. In response to our inquiry, a Dyson representative advised against using non-genuine parts, noting safety and performance discrepancies.

Performance evaluations indicated that the knockoffs performed adequately but fell short in longevity. After fully charging each pack, testing on the V7’s max suction setting revealed that the PowerExtra ran out of power in under 5 minutes, while the Dsanke lasted about 40 seconds longer, with the authentic Dyson pack performing for 6 minutes and 30 seconds. Despite claims from manufacturers, the knockoff batteries failed to deliver the promised capacities. The tested PowerExtra claimed 4,000 mAh but only delivered 2,000 mAh, while the Dsanke, advertised at 3,000 mAh, yielded only 2,500 mAh.

Temperature fluctuations observed during the charging of third-party packs indicated potential issues with battery cell quality or design. Conversely, the Dyson pack exhibited stable temperature changes.

Although we reviewed only two of the numerous knockoff battery options available, we are confident that many will deliver disappointing performance due to similar pricing and lack of reputable branding.

Though some may argue that Dyson packs are overpriced and overly engineered, their performance justifies the cost when considering the convenience of a cordless vacuum with ample power. If replacing the battery pack becomes necessary, opting for the authentic option appears to be the safest choice, as we found no reported safety issues. Ultimately, purchasing a genuine Dyson pack may save you frustration and costs in the long run. If you determine that a Dyson stick vacuum does not meet your needs, consider investing in a plug-in vacuum.

To learn more, please visit our website for the Dyson v10 Replacement Battery.