I made this Battery filler to wire in 2 sets of 2x 16850 batteries so that I never run out of power, 2 batteries can be removed and replaced with full ones while the other 2 batteries are still powering the camera.

I had no way to wire outside power to this camera, no outside source of power.

The Sony DSC-H300 is a good camera but it lacked the ability to expand the battery and the factory setup only allowed for about 25 minutes of video recording before running out of power. This is not acceptable for any youtube videos, exploring, weddings, etc.

This fits perfect, 2 wires are put in the battery filler cores and the camera has a convenient trap that I used to pass the wires so no modifications are required on the camera.The other 2 battery cavities can remain empty.