https://community.usa.canon.com/t5/Professional-Video/EOS-C300-Mark-II-Voltage-needed-from-external-battery-to-power/m-p/567892#M5408 <P>Hi Mark360,</P> <P>Through Canon support we only have the information listed in the technical specifications listed for the camera body. The power specifications listed for the EOS C300 Mark II are:</P> <P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="Hazel_T_0-1757628570592.png" style="width: 400px;"><img src="https://community.usa.canon.com/t5/image/serverpage/image-id/70026i87C905E05E7EEDE9/image-size/medium?v=v2&amp;px=400" role="button" title="Hazel_T_0-1757628570592.png" alt="Hazel_T_0-1757628570592.png" /></span></P> <P>&nbsp;</P> Thu, 11 Sep 2025 22:10:19 GMT Hazel_T 2025-09-11T22:10:19Z https://community.usa.canon.com/t5/Professional-Video/EOS-C300-Mark-II-Voltage-needed-from-external-battery-to-power/m-p/567662#M5400 <P>I run a C300 mk II with a CN-e 7x17 lens, sometimes for long hours, so I wanted to utilize all my 18V Makita batteries rather than buying more D-Tap batteries. The Makita Batteries output 20V when fully charged so I fitted a regulator that outputs 12V and up to 15A. The lens works perfectly but the camera will not turn on. I expect it needs a little more than 12V to allow it to start.&nbsp;</P> <P>What is the maximum voltage I can put in the LEMO jack? would 20V from the Makita battery (unregulted) be ok?&nbsp;</P> Tue, 09 Sep 2025 17:46:23 GMT https://community.usa.canon.com/t5/Professional-Video/EOS-C300-Mark-II-Voltage-needed-from-external-battery-to-power/m-p/567662#M5400 Mark360 2025-09-09T17:46:23Z https://community.usa.canon.com/t5/Professional-Video/EOS-C300-Mark-II-Voltage-needed-from-external-battery-to-power/m-p/567892#M5408 <P>Hi Mark360,</P> <P>Through Canon support we only have the information listed in the technical specifications listed for the camera body. The power specifications listed for the EOS C300 Mark II are:</P> <P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="Hazel_T_0-1757628570592.png" style="width: 400px;"><img src="https://community.usa.canon.com/t5/image/serverpage/image-id/70026i87C905E05E7EEDE9/image-size/medium?v=v2&amp;px=400" role="button" title="Hazel_T_0-1757628570592.png" alt="Hazel_T_0-1757628570592.png" /></span></P> <P>&nbsp;</P> Thu, 11 Sep 2025 22:10:19 GMT https://community.usa.canon.com/t5/Professional-Video/EOS-C300-Mark-II-Voltage-needed-from-external-battery-to-power/m-p/567892#M5408 Hazel_T 2025-09-11T22:10:19Z