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The Dell 03V806 is a 51Wh, 14.8V replacement battery for the Alienware 13 R2. It is a direct-fit part, so it slots into the same bay as the original and keeps the laptop's form factor intact. It suits owners of that model whose original pack no longer holds a charge. Compared with third-party generic packs, it carries Dell's own part number, which matters for fit and for buyers who want a known part rather than a no-name cell.
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Lowest price we've seen: $39.99 on Nov 12 at Amazon. Tracked across 1 store since Nov 12.
This is a Dell 03V806 replacement laptop battery for the Alienware 13 R2 QHD. It has a 51Wh capacity and a 14.8V output.