Camping in the Cold--Some AH Figures
So camping off grid for four days--arrive Monday go home Friday temps : Night 0C/32F , Day 7C/44F-ish (Annual Rathtrevor provincial park late January episode to start the year off) Park gen hours 9-1...
Forum Discussion
BFL13 wrote:
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OK so by Wednesday morning, down 292 AH by Trimetric, "morning voltage" is 12.1 so if that is half, full must be 584. Yipes , kind of low, but you do take a hit in the cold.
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Think that 12.1V ~= 50% SOC is at ~25C.
And there's different SOC vs V charts depending upon your mood.
But think they all indicate that at lower temps 50% SOC is at a lower V? If so, at 0C, 12.1V might actually indicate you are closer to 60% SOC.
Then back calculating from that 50-60% SOC (and your Trimetric) makes for a really poor estimate of your bank's capacity.
And are you really using 292 Ah per day? Or was that from Monday to Wednesday?
