Review on 🔌 DROK Buck Voltage Reducer Converter 12V to 7.5V 3A/22W - High-efficiency Step-Down Power Module for LED Display Radio by Deelo Sylvester

As an amateur astrophotographer, having a battery that lasts all night is very important to me. However, one issue I have is that batteries can get warm and that heat will show up in log exposure photos. For about three years, my solution to this problem was to use a power cord connected to an inverter powered by a deep cycle battery. This has led to several undesirable problems. First, the inverter is inefficient. Second, I need to bring more equipment to the field (inverter, power cord, camera power adapter). I wanted something more energy efficient and rely on fewer parts. I need to make some of the tools needed as astrophotography is an expensive hobby and there are surprisingly few "handy" accessories on the market. The Canon T3i requires 7.4V DC at 2 amps and Canon does not make a DC cable for this camera. I could only find a third party cable and it costs more than a used camera. I have decided to make my own DC power cord for my Canon T3i DSLR which will power my camera with a marine deep cycle battery. This product clearly meets the performance requirements of my DSLR. I was able to simply crimp a 12V DC cigarette plug on one end and crimp the power cord to the output side of the buck converter connected to my camera. There is a marking on the case to indicate which terminals are positive and which are negative. It also shows which power wires go with the input and output wires. As an electronics hobbyist, I need all the help I can get. All I needed was a pair of electric butt plugs and the power cord was assembled in less than 30 minutes! To tell the truth, the entire assembly took several hours through trial and error. I noticed that I only drew about 0.1 amps the first time I tried to turn on my DSLR. I checked all my connections and they were correct and tight. In the end I decided to use better quality cables from the output to my camera because I was using very thin wires. As it turned out, the cord wasn't thick enough to handle the full 2 amps of current (it was a phone cord, after all). Switching to an audio speaker cable solved this problem immediately. It works great. I can take photos without worrying about a ravenous inverter draining my field battery too quickly. In theory, I could take photos with my DSLR and field battery for a few days (maybe a whole week) with this 12v to 7.5v buck converter! I've been looking forward to my first field trip with this camera all night.