Motorola SHN9519 Original OEM Q Extra Capacity Battery Door - Non-Retail Packaging - Black This extended capacity battery door is made and manufactured by Motorola and is directly compatible with the Motorola Q smart phone This extended battery door is made to fit your Motorola Q when using the Motorola extended battery SNN5756 If you're thinking of using an extended battery for your Motorola Q you will need this door due to the batteries additional size