Model originally uploaded to Thingiverse at https://www.thingiverse.com/thing:1829022.

Unfortunately the accumulator of the bullet cam loses the main part of his capacity within the first year. To record a full bicycle tour there is not enough power left. To power it during the tour the original protective cap must be removed to be able to plug the power source into the body. This cap protects the camera against dust and water drops when using the external power.