G,Day AJ, yes two 100AH Renogy Lithiums in paralell with 400 W of Solar on the roof of the truck [ 97 Hilux DC ] ..
Will say the Lithium batteries are great..
One thing puzzles me though, At home doing a cold soak with empty fridges .. 20 yro 50 lt Waeco
set on 0*C and a 3 yro 21 lt Engel set on max feeze -20*C the battery usage check each morning showed a drop from an average of 98% full charge of roughly 25 > 30 %, so showing 68% +- roughly remaining charge, similar night time temps to camping ..
Fast forwards almost two weeks camping, everything cold soaked / frozen, waeco at 4*C and Engel at - 15*C ..Batteries still showing 98 >100 % most days by 10 am > midday .. thumbs up .
Here comes the " BUT " the last 4 days the overnight usage with everything cold soaked / frozen showed an increase of usage over night of up to 50 %, giving a low battery warning on the morning check with battery at < than 45%. daytime temps were a about 16 > 20*C.... Night time temps were around 5*C
I have a sneaky feeling One of the batteries has dropped out and only running on one .. 200AH should have more than 45% left in it after an over night run . [ Lost the sun roughly 4 pm each day / panels flat on the roof ] checked each day at 7 AM ish..
Might look at a dedicated single 200 AH Renogy battery [On special atm for about $1200 ] .. for the fridges and use these tw singles elseware in the camper.
One other plus was an old radio I bought for dad back in the 80's, Solar and a wind up, the 360 AM / FM Clear case radio ..well the wind up bit needs fixing but she works ok in the sun .. Needs a bigger aerial so it got a length of electrical wire wrpped over the aereial an strung up .. Gotta have those background sounds, The thump and crash of the surf 24 / 7 is good .. but