Dell Battery 3C 11.4V 3500mAh 42Wh

The Dell Y3F7Y is an internal battery for a laptop, associated in Dell documentation with the WDX0R reference. Its three-cell design has a 42 Wh capacity, describing the battery’s format and stored energy.

The electrical ratings are 11.4 V and 3500 mAh. Dell documentation lists the same 11.4 V, 3500 mAh and 42 Wh ratings for battery reference FW8KR; this is a separate reference, not an added compatibility claim.