I am using a tracer battery BP2603(12V,3.5A) to turn on my camera. The camera needs 12V and it consumes max 3A. Maximum voltage the camera can accept is 13.5V. But I've found that when the battery is fully charged it has a voltage of approx 13.7v and it is not able to turn on the camera. So I need to drop approx 0.2V-0.3V to turn on the camera. I had a thought to use shunt resistor but the power dissipation is nearly 1W. The second option I thought about using a voltage converter. Is there any other way I can drop 0.2V-0.3V? Please let me know if there is any other way.
Thanks in advance