Inverter too small?
I have a 1000w cobra inverter i bought to power a small 5 cubic foot freezer that pulls 4 amps when running. The battery i use for the inverter is 105 amp marine deep cycle group 29.The inverter is co...
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The Cobra inverter is most likely not a PSW inverter, so the freezer wouldn't have been running terribly efficiently. (It would have pulled more than the rated current, whatever it is.)
If the freezer was already cold it wouldn't have run constantly for those 5 hours. It would only have had to run enough to maintain the temperature. I figured that's how he got 5 hours out of it - 5 hours of wall-clock time doesn't equal 5 hours of actual load. (The OP probably doesn't know the actual amount of run time.)
MNtundraRet wrote:
The problem is that the OP was claiming about 5 hours out of 105 AH battery. I understand your calculation (I use similar) but the OP wasn't close with his 4 amp estimate for usage. That why I use a clamp-meter to check negative flow out of the battery for an hourly estimate on total use.
If the freezer was already cold it wouldn't have run constantly for those 5 hours. It would only have had to run enough to maintain the temperature. I figured that's how he got 5 hours out of it - 5 hours of wall-clock time doesn't equal 5 hours of actual load. (The OP probably doesn't know the actual amount of run time.)
