fatty said:
Although DSub from reputable manufacturers is rated at 5A/pin, I'd suggest de-rating any Chinese eBay/Amazon connectors. And better yet, consider dedicated automotive-type power connectors.
I am an amateur flingDinger. Yes I watch any "system" I make like a hawk for problems.
My Dsub backshells are NOT shielded at all. They are just plastic.
I do worry myself sometimes, not being formally trained, if I am doing something Danger-Ranger. I have only ever seen power transmitted through Dsub with DIY kits, not the ( Tv, computer) low power applications you see in production... but, I did ask an Electrical genius, in person, and he said it was OK. I do know a few of those. Guys.
That batt ( above) is a 30Ah 72v pack built with Chevy Volt cells. IR is 0.0008mOh / group (2p) on the datalog. Tested in at 30.5Ah. Aluminum angle and banded for corner protection, and airspace. 100% copper. It is split into two 10s 30Ah w/ 6g wire in between ( main discharge/charge). That battery is gonna last a VERY long time.
Too bad it was stolen off a porch right it arrived at the destination I shipped it to. Lol. Bah Hummbug.
Above, I said, I begin ( just got a kit) use Molex ML-XT ( DISCONTIN). (13A.) 18g wire ( can take up to 14g) in the plans. MX150 is another i have considered. Molex Picoblade is better than JST.
Also, the GMWeatherpack line, I can get a 788~ pc kit for about 140$ ? I think. DIYAutotune.com is the best place for those, those guys are great. I have a 49' 3100 and a '55 Apache I am "contracted " to building the harness for now. https://www.diyautotune.com/product/755-piece-weather-pack-kit/
I really want to know the name of those LIL TINY POSITIVE INTERLOCING WEATHERPROOF plugs on the BOSCHE bikes..... they are tiny and cool.. very solid... and I have no idea as to the name of the product line.
Those "Aptiv GT 150 Series 7 Position" are expensive AF and not common.. Lol @ 7$ for a 7 Pin connector.. I need a system that has every piece, every pin config,available for much less than that. This is why I look for discontinued lines of connection products. Cheapo.
Cannon does make ( called high power cannons, ComboD) Double density, high density, Combo-D, all those. They do make weatherproof too. All kinds of BOB terminal headers are available, Im just like a big kid playing with legos.
Plus the Cannon / AMP/ Tyco dsubs cause they cheap. Everywhere. Kinda foolproof.
I personally cannot really tell the difference tween 24g and 26g.. by eye. Have to read the print. Kinda scary thinking that might be fake too.
So I got a ton of the DB25. Convenient for the size I need. @ 20s, that is max 5A to the battery.....@ 5A / line,. ... Through all those tiny wires, all acting like tiny resisters. I do say, when you desolder the junk JST from a BMS and resolder in your own, positive interlocking, reliably connected 200-500 (rated) connection cycles... +.. harness, You do feel better ( than the junk JST there alone).
(https://www.mcmaster.com/7304K12/) ..That IS the wire in my pic. I get it for 4$ / lb.