ELECTRIC QUESTIONS

Is this a little portable cooler type of fridge with a thermoelectric cooler? If so, the AC mode is just a power supply that produces ca. 12V DC. You'll have a lower 12V draw for the same level of cooling if you plug it into 12V and skip the 12V to 120V and back to 12V conversion.

If it's an RV absorption fridge, it probably uses more power at 120V than at 12V because the 120V heating element is typically a good bit higher wattage than the 12V element.

TOMMY47 wrote:
Plugged into inverter directly--How many amps? 16.6 or 2?

16 2/3 amps x 12 volts = 200 watts.
120 volts x 2 amps = 240 watts, 200 watts/2 amps = 100 volts

Your real question was whether running the fridge via inverter was harder/the same/easier on your battery, and the answer to THAT question is that running directly off the battery on 12 volts will draw down your battery less than running it on the inverter.

Plugged into inverter directly--How many amps? 16.6 or 2?

Watts is same but amps changes with voltage. Current Times voltage equals watts. Watts divided by volts equals current. As voltage goes up current goes down. For example a 100 watt light bulb would draw approximately 1 amp at 100 volts. That same light bulb would draw 10 amps at 10 volts. Hope that helps

FYI 200W @ 12V is 16.6 AMPS....