Review on 🔋 POWOXI Solar Battery Charger 12V 10W Panel Kit for Car, Boat, RV, Trailer, Motorcycle, Marine, Automotive, Powersports, Snowmobile+ by Domonic Roberts

Not enough power to keep my MB Sprinter battery going. (Sprinters keep draining the battery, even with the ignition off.) Connected to a fully charged battery after a 210-mile ride. The battery was dead after 15 days. At 12.2 volts, the solar panel only delivers a quarter of an amp to the battery, which is only 3 watts. I reckon with about 1.5 amps (nominal 20 watts) at this state of charge. The blue light on the panel is on, the red light on the charge controller is on, the green light is off (as it should be when the battery voltage = 12.2V.) The whole time the sky was almost pure blue , the temperature was between 78 F - 105 F. Support: V I set out the basics clearly at the start of my support requests; that the panel is intact, red is positive, black is negative, blue, red and green light state, bright sun and so on. Then we go around in circles and ask the same questions, as if nobody heard my question from the start. Sorry but it comes back.