The dimensions for the HB386589ECW are 87.10 x 64.20 x 3.60mm.
The dimensions for the HB436486ECW are 84.4 x 63.06 x 4.15mm
So even though it is shorter and narrower, it is thicker so the case may not close properly and trying to fit it may exert too much pressure on the battery and the other components in the phone. Also there is no guarantee that the battery connector wiring is the same used for both batteries.
Not worth the risk for only a small increase in capacity"