Be sure to talk to the ham radio guys and RC car guys first, who have a couple decades experience with almost uncountable number of DC power "standards", or you'll just poorly reimplement something they already figured out back in 1970 or whatever.
The Anderson Powerpole seems a rather effective and cheap way to shove a couple hundred watts of DC around. Of course there must be millions of existing connectors all operating at 12 volts so applying it to a 5V standard will be problematic at best. I have them all over my house given my electronic interests. Do NOT listen to people who complain about them, much like the legendary PL-259 connector or soldering SMD device by hand, 99.99% of the population just does it no problem without drama but the 0.01% who can't be bothered to learn how, make sure to very loudly tell everyone about how it never works, etc. Its tiresome but traditional.
The molex family seems most effective at demonstrating the flammability of overheated nylon, at least at power levels over a hundred or so watts.
The ancient Cinch plugs worked sorta well, although they're a bit large and fiddly.
Coaxial DC connectors are something of a standard although few can handle a hundred watts, at least at low DC voltage.
A miniaturized version of the standard used for intelligent electric vehicle charging would be interesting. There's probably a patent preventing innovation, but maybe in a few decades when existing patents run out thus permitting innovation to start again...
The Powerpole "standard" has also been completely disregarded. The housing color is suppose to represent the voltage, but now it's been co-opted to the point where you see red and black as + and - 13.8v.
That's the nice thing about standards, there are so many conflicting ones to choose from. And you are correct before hams started using powerpoles in wholesale lots, the mfgr had a semi-elaborate scheme for full scale railroad wiring where the color had a meaning WRT voltage which the hams disregarded and decided to use red/black.
That's in itself is a lesson optimistic power connector designers need to learn about the past, if you "borrow" something currently used for marine power, or solar panel wiring, or forklift battery chargers, and try to do something totally different, expect some conflicts even if the new app dwarfs the old one by a couple orders of magnitude.
Yes, on a railroad locomotive engine I wouldn't randomly plug red/black ham radio powerpoles into the first railroad engine red/black that you see, its not going to be what you expected. Almost everywhere else, it will work.
The Anderson Powerpole seems a rather effective and cheap way to shove a couple hundred watts of DC around. Of course there must be millions of existing connectors all operating at 12 volts so applying it to a 5V standard will be problematic at best. I have them all over my house given my electronic interests. Do NOT listen to people who complain about them, much like the legendary PL-259 connector or soldering SMD device by hand, 99.99% of the population just does it no problem without drama but the 0.01% who can't be bothered to learn how, make sure to very loudly tell everyone about how it never works, etc. Its tiresome but traditional.
The molex family seems most effective at demonstrating the flammability of overheated nylon, at least at power levels over a hundred or so watts.
The ancient Cinch plugs worked sorta well, although they're a bit large and fiddly.
Coaxial DC connectors are something of a standard although few can handle a hundred watts, at least at low DC voltage.
A miniaturized version of the standard used for intelligent electric vehicle charging would be interesting. There's probably a patent preventing innovation, but maybe in a few decades when existing patents run out thus permitting innovation to start again...