robbob2112
Doing more research, mosty harmless
I use XT90 connectors. You can buy them with 10awg pigtails already soldered in and just use crimp connectors.
xt90
I know I am going to get grief for this, but I really dislike the whole XT connector family. To many knockoffs and to many ways to do the connectors wrong.
Since the user is supplying their own cables maybe use Anderson connectors on the case and supply a pigtail to connect to standard solar and battery. If you use a pigtail with different colors of anderson your instructions can reference that color along with the "you break it, you bought it" And a price to replace the pigtail if not returned to cover cost and labor to replace. And make/order extra and give the customer a purchase option. Have a laminated card with hookup instructions and your business logo/website/contact info. Be prepared for folks to want to just buy units outright. So, make several extras so you can fill an order of 6~12 units. and come up with a price to cover cost/labor/copywrite/engineering/insurance. The last two CYA in case someone is sue happy.
There is an engineering firm near here that provides that sort of service for a fee.