Battery Life and Low Temps
I have been having a ball up at Iris Meadow off of Rock Creek Road, Close to Mammoth Lakes, CA. It's the steeper side of the Sierras just East of Yosemite. It's a little known area comparably, but v...
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In regards to your original question. It appears that "pianotuna" has answered that. On the other hand, keep in mind, the chart is in respect to a battery that is at full charge, and is measuring a percentage of "available" charge at particular temperatures.
Other possibilities to your scenario :
#1 - It appears you were in the third day of camping already.:B
#2 - Your batteries were not fully charged in the beginning.:@
#3 - The batteries are mismatched & only as good as the weakest one.:E
#4 - How many times & hours had you run the Yamaha :@
#5 - Misconception, when we run our generators for 3-4 hours, we think the batteries are back to 100%, they aren't. we are only putting some amps back into an already depleted battery & chances are we've been using more than we are putting back each cycle.:S
#6 - The coach battery monitor system is not reliable. If nothing else, use a multimeter to measure battery condition.:h (chart attached)
#7 - Does your converter have 3-4 stage charging? Even if it does, in my opinion, & since your batteries were apparently at or near "low voltage", it would need several hours of charging without load at "optimum ambient temperature" with a "at rest" period, or the use of a Load Tester to eliminate surface charge, then start the charging process once more & bring them back to capacity. :E
Other possibilities to your scenario :
#1 - It appears you were in the third day of camping already.:B
#2 - Your batteries were not fully charged in the beginning.:@
#3 - The batteries are mismatched & only as good as the weakest one.:E
#4 - How many times & hours had you run the Yamaha :@
#5 - Misconception, when we run our generators for 3-4 hours, we think the batteries are back to 100%, they aren't. we are only putting some amps back into an already depleted battery & chances are we've been using more than we are putting back each cycle.:S
#6 - The coach battery monitor system is not reliable. If nothing else, use a multimeter to measure battery condition.:h (chart attached)
#7 - Does your converter have 3-4 stage charging? Even if it does, in my opinion, & since your batteries were apparently at or near "low voltage", it would need several hours of charging without load at "optimum ambient temperature" with a "at rest" period, or the use of a Load Tester to eliminate surface charge, then start the charging process once more & bring them back to capacity. :E
