MPPT Solar Controller, is there any good?

[@dougrorison1211]

You have a very impressive system. You did not say if your car has a dual battery system installed in it. If you are running your fridge etc just from the lithium battery when the only means of recharging the battery is the solar panel I think 2 days is very good. Most solar panels have a solar charge controller inbuilt. The reason is because different types of 12 volt batteries have different charging voltages & the controller regulates this voltage depending on the type of battery you are using. There are 2 types of solar controllers, PWM which are apparently only about 75% efficient & MPPT controllers which are supposed to be about 98% efficient. I don't know how often you go camping but it looks like you have all bases covered as far as the power supply in your vehicle. Thank you for sharing your set up.

[@localtravellertube3366]

Thank you for your comment and advise , No I don’t have dual battery because I run my 120ah Lithium battery separately from my main car battery, as you can see where my battery sit at the back of the car and the battery hook up directly to my 250w solar panel via controller box to the car roof 24/7, so it’s hardly run out of the power( said if there rains continuously for a week or two than my battery will last at least 2-3 days with out charging at all if I leave the fridge on 24/7) I do camping quite often at least one or twice a month but mainly I did a long road trip to other states when I have a chance or when I have a few weeks of work.

[@dougrorison1211]

@@localtravellertube3366 I am impressed that you get so much out of your system even if you have had rainy days. I have a dual battery system in my Navara but on the last trip my fridge showed a low voltage warning after one & a half days. I bought a 100amp hour AGM battery & have put that in a Hardkorr battery box. I also bought a 350watt solar blanket which I can then use to charge the battery at camp when my engine is not running. The solar blanket came with a PWM controller but I am going to replace it with MPPT controller to get maximum power from the blanket. Happy camping to you & safe travels.