Kastar Dyson V8 Replacement Battery vs Lizone V8 Battery for Dyson

Both are third-party Dyson V8 battery replacements, and the main difference is capacity. The Lizone pack is rated 6.5Ah (140Wh), more than double the Kastar's 2.8Ah (60.48Wh), so it should run noticeably longer per charge. The Kastar is lighter and closer to the original Dyson pack's size and weight, which some owners prefer for balance. Ratings are close (4.4 vs 4.2), but both come from small samples, so treat them as rough signals. Buy the Lizone for longer runtime; buy the Kastar for a lighter, stock-like feel.

• Choose the Kastar if you want a lighter pack that matches the original V8 battery's size and weight, and you don't need extra runtime.
• Choose the Lizone if longer run time per charge matters more to you than a heavier pack.