Choosing a new house battery

[joelc]

I am confused. I have a 2012 Carriage Cameo with a battery box that measures 25Lx13HX8 5/8 deep and can not be enlarged. We recently had to purchase a 12V fridge, so now my demand for 12V is very high. My problem is what kind of battery and BRAND to get. I will probably need at least 200ah, Deep cycle. Don't know whether to get AGM or LI. If I get a LI then I will also have to change my on board converter/charger. I want to know the type of battery experience you have (Brand and type and size) and if you recommend it. When I go on the internet I find good reviews about "brand X", then find out that another site says the battery is junk. So what do you say? Remember, this is NOT for starting. Just a reliable HOUSE battery. By the way...mid price. Can't afford a $1000 battery. Also, I live full time, and am hooked up to shore power.

[joelc]

Agwill The fridge is a 12 Volt only. Dometic DMC 4101
To enlarge on my question with some more information. I currently have a Gel battery and according to the battery condition light in my RV it is in the RED zone. I can't run the fridge and lights without the lights dimming. So, the battery being less than 1 yr. old is not holding voltage.

[wildtoad]

I would think being hooked to power, any battery would do.

[rhagfo]

How large is the refer, likely three or four door. I would not rely on a single battery. We did a JC Refrigeration 12 volt compressor conversion on our Dometic RM2862, we have not yet needed to last long on battery, but expect that our two Interstate SRM27 deep cycle batteries will run us overnight. If you without shore power there are basically two situations:
1. Warm/hot outside no need for furnace, lots of run time for compressor.
2. Cold outside, furnace draw high, and refer draw low.

[agwill]

Is it a standard RV fridge? Is it a two way 115v and gas? They make three way also. A standard RV fridge runs on 115v when parked and switches to gas when not hooked up to 115v. Need more information.

[agwill]

Is it a compressor type 12 volt? If not you must stay plugged in all the time. No battery will last long. Your converter is needed at all times as you know fridge has a very high current draw.