Recently set up a dual battery system for the car to run a 12 v portable fridge/Freezer. The100 A/hr AGM battery is charged by D250S charger via the car alternator when the motor is running in addition to the fridge being powered. When the motor stops the AGM battery powers the fridge. Should be able to run like this for about 1.5 days. The CTEK charger also has an input for the 125 W portable solar cell.
Items and cost
Waeco CF 50 DZ $1200
CTEK D250S DC/DC BATTERY CHARGER $369
Extra Heavy Duty Prostar 12V 100Ah AGM Deep Cycle Battery $354
Eco-Camper 125W Flexible Solar Panel $1400
Wires, lugs, plugs etc. $100
Total $3,423
images @ https://www.flickr.com/photos/stephanridgway/sets/72157625908403970/
Post time: Jan-23-2018