Almot wrote:
There is nothing to make up. MC4 takes a bit of effort to disconnect. Dust, salt from marine air, cold weather making plastic stiff - a lot of factors in play. Controller should be connected to battery first, not at the same time with panel. That's why there are disconnects.
more bologna. the disconnect on a suitcase is on the batt side, there is no need to use it. One has to connect the batt last hopefully with the panel facing down or pointed away from sun, this is a non issue. One can use the MC4 to add an extension or to change out the alligators clips or ...
Not using solar 24/7 is a shame but that is how many folks use their suitcase, only when they camp. When a trailer is garaged/covered the panel sits out in the sun and one employs a trailer batt on/off.