Electronic shift control device for a bicycle derailleur

A control device for a bicycle, the control device comprising:

• a housing mountable to the bicycle and sized and shaped to be grasped by a user's hand;
• a battery receptacle positioned on the housing;
• and
• at least one accessory port accessible on an exterior of the housing, the at least one accessory port configured to receive an electrical connector of a remote accessory spaced from the control device on the bicycle,
• wherein the housing has a base portion and an extension portion, the base portion including first and second ends, a downward facing side, an upward facing side, in inward facing side, an outward facing side, and a handlebar clamp disposed at the first end,
• wherein, when the control device is mounted to a bicycle handlebar, the base portion extends generally horizontally, and the extension portion extends forwardly of the base portion at the second end and is angled generally upwardly from the base portion,
• wherein the battery receptacle is positioned on a first side selected from the downward, upward, inward, and outward facing sides of the base portion of the housing, and
• wherein the at least one accessory port is positioned on a second side different than the first side and the at least one accessory port is positioned on the inward facing side or the outward facing side of the base portion of the housing.