Originally Posted by Country_Mouse
We have been boondocking for 3 days on 2 batteries that died this morning which is the 4th day. If we were there all day I would of charged them each night but we have been gone from 7 A.M til 8 PM every day so basically only ran led lights for an hour or two each night, h20 pump for toilet and washing hands and that's it. Should batteries have lasted longer or does fridge use enough to drain them like that?
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How old are your batteries? What is the total Amp Hour (Ah) ratings for your 2 batteries? How many times did you drain your batteries to where they were not producing enough power that was needed? Do you know what the voltage was on the batteries when they died? If they have been discharged a number of times (your dead battery status), the available Ah of the batteries drop, especially if the voltage hits 10.5VDC, which is a DEAD 12Volt battery (or 2 6 volt batteries in series). If you have an 85Ah battery, 2 batteries = 170 Ah of which you can only use 85Ah (12.1VDC voltage level), which is not that much over 3 or 4 days.
Example: My (2) 12 Volt Interstate 84Ah batteries that were on my TT before I added SOLAR and went to (2) 6volt batteries (T-145 260Ah), are now putting out 41Ah with a full charge. They show 13.2 Volts while in FLOAT mode and stay at 12.8 for months, so the voltage check, they look fine... but they have lost 60% of their Ah capacity. (Test Results
Post # 1)
These batteries never were discharged below 12VDC, and always had some form of charging. They are 4 years old this month. Age also plays a part on the lowering of a batteries Ah capacity.
What I am saying is, if you let the batteries go under 12VDC voltage level, the Ah of your battery(s) is becoming less and less.
Do you have a Digital Voltage Display so you can monitor the battery voltage? Just hooking your TT to the TV and running it for 20 minutes before you leave for the day may help. I would recommend SOLAR, but that is another thing you need to think about. If you do, I would not recommend anything less than 200 Watts (16 Amps). Covers you on cloudy/rainy/shady days. Or if you have 84Ah batteries, you may just want to buy100Ah batteries, but that still may not be enough.
Get one of these if you do not already have one, and keep a close eye on it.. batteries can get expensive if you keep having to replace them.
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1500 Watt Ramsond PSI, 2 Trojan T145 Batteries (260Ah)
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