The ad does not properly inform you that the BT-60 will not fit in the W385 - IT SHOULD!This battery does not fit in the W385 - it is too thick and requires the user to find and buy an additional extended cover.If you want extended battery life... and... are willing to find and buy an additional extended battery cover... then get the BT-90 battery.So... do not buy this battery... IF... you don't want to have to find and buy another battery cover... and... you may want to avoid this seller, since they do not properly inform you that this battery will not fit in the W385, without another battery cover.