Just an update on my battery-less branch of of the the dual battery thread. Of course, my mods claim to fame, besides the fact that it actually works (which surprises me more than anyone else) is the fact that it can fake using dual batteries when participating on this thread.
I went ahead with a test using the two genuine DJI batteries and got crap for results. Well, actually, I really liked the way the bird flew, but was very disappointed in the flight time. The empty middle, and two on the side was the most stable configuration I had ever flown. Having those batteries out out with a normal lipo inteface mad it convenient for me to test them with the normal advanced, lipo charging centers. The reason for the short flight time was soon clear - the DJI batteries were not putting out what they were spec'ed at. Not even close. I have 5 of these DJI batteries and I'm sure they are all crap, even thought they look fairly new on the DJI schedule. It is my fault, I am sure. I often leave them plugged in too long, or continuously because I always want to be ready. I know part of the problem belongs to DJI because I know darn well the auto storage feature is not reliable.
Anyway, for me to do a proper test of the dual DJI batteries requires me to buy a couple of new smart batteries. I started thinking about what is unique about this mod, and maybe I should focus on that. For example the entire assembly containing the battery manager and circuitry weighs over 100. That's not chicken feed. The essentials are closer to 30. I made a frame to handle a mono battery of larger capacity than the standard DJI battery. It is of carbon fiber and is 50, but it hasn't been lightened yet. Of course the battery I have is just a tester, there may be much better choices available.
I went ahead with a test using the two genuine DJI batteries and got crap for results. Well, actually, I really liked the way the bird flew, but was very disappointed in the flight time. The empty middle, and two on the side was the most stable configuration I had ever flown. Having those batteries out out with a normal lipo inteface mad it convenient for me to test them with the normal advanced, lipo charging centers. The reason for the short flight time was soon clear - the DJI batteries were not putting out what they were spec'ed at. Not even close. I have 5 of these DJI batteries and I'm sure they are all crap, even thought they look fairly new on the DJI schedule. It is my fault, I am sure. I often leave them plugged in too long, or continuously because I always want to be ready. I know part of the problem belongs to DJI because I know darn well the auto storage feature is not reliable.
Anyway, for me to do a proper test of the dual DJI batteries requires me to buy a couple of new smart batteries. I started thinking about what is unique about this mod, and maybe I should focus on that. For example the entire assembly containing the battery manager and circuitry weighs over 100. That's not chicken feed. The essentials are closer to 30. I made a frame to handle a mono battery of larger capacity than the standard DJI battery. It is of carbon fiber and is 50, but it hasn't been lightened yet. Of course the battery I have is just a tester, there may be much better choices available.
