I recently changed my AGM battery to a 102ah lithium set up in a mobile unit used for camping. The AGM only had 47ah and would not allow my 12v refrigerator to operate if I did not drive the truck every day. I thought the lithium would take care of the shortcomings of the AGM. Over Christmas I went camping and at first all was well. We run a fridge and 5 LED lights (lights only at night) we do have 6 USB ports for charging phones, etc. but not used continually. We camped two nights in a slightly shaded area. On the second night (6 days ago in the history) the fridge cut off during the night as it is designed to do when the voltage reaches 10.9 v...I assume, and the lights were dead the next morning as well. We moved locations and had sun most of the day while driving around (at least 5 hours of sun) That night (5 days ago in the history) about 8p.m. the fridge cut off again at about 10.9v but the lights stayed on. We went to bed with lights and the voltage reading showing 10.8 but the next morning no power at all. As the sun came up the panel started to collect sun as the voltage reading started to blink in a out as the volts increased. We moved yet again and drove around about 4 hours or so. At 8p.m. (4 days ago in the history)I turned the fridge off and went to bed with 11.6 showing on volt meter but by morning...again no lights. We packed up and drove home in a rainy and overcast day. The truck has been sitting in direct sun for about 9 hours each day with the fridge 
on. It has not shut down and the voltage shows to be in the 13.0 -13.4 range. I attached pics of the history on the MPPT and noted those days in the above. Did I just not get enough sun? Is the battery bad perhaps? Do I need to add a dc-dc charger? Thanks for any input.
