Hard to calculate accurate values. Inverters are typically most efficient around 2/3 max load. Could be much less efficient at low loads -- 50% or less.
Taking a guess because of so many variables--> anywhere between 12.5A and 20A DC for a 150W load.
Tim
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Previous owners of a great 2010 [SIGPIC][/SIGPIC] TM2720SL.
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