I contacted MITB about this since the package indicated that a battery should have been included. As always they worked to find a solution to the issue and responded quickly and professionally. The battery is not included due to shipping restrictions so you will have to purchase one separately. The type is a Li-ion BL5C. The device works well with the battery installed and appears to be charging normally. There are no instructions included with this so you will be on your own. The sound quality is OK for the size. Overall good quality but should include a battery and instructions.