This is a 9V battery clip typically used for our wireless cameras. The ID is 2.1mm, the OD is 5.5mm. Center positive.
9V Battery Snap with 12" Leads
ABS Plastic Multipurpose Enclosures w/ Card Guides 1591 Series
Flame Retardant, General Purpose, Flanged Lid or Bottom
This is a prebuilt version of TP-251-003, our programmable triangular omni wheel vectoring robot. It can vector in any direction and is great for indoor robotics. An Arduino Mega and encoders allow for this to be an autonomous robot.