Golf Cart Battery Ratings
Golf Cart Battery Ratings
What size Power Inverter should I get for a refrigerator for a camper?
I have a small Sanyo 1.7 cubic foot refrigerator and I want to use it in a camper. The ratings on the back say 115v 60hz 1.4A. The power guide for it says that it will use about 307KWH per year.
Now I know nothing about power inverters. I want to take a 12V battery for a golf cart and connect an inverter to it to power this fridge. What size inverter should I get and how long would the battery last on a single charge?
Thanks for the help.
Power = Voltage x Amperes
= 115 x 1.4
= 160 Watts approx
Let us assume 200 watts to be on the safe side.
307 KWH per year is about 0.8 units per day and assuming that the compressor runs for 1/3rd time though the fridge is on for 24 hours, we get the power consumption as 100 watts per hour.
In case of AC appliances there is a power factor and it may be about 0.7 or so in this case and thus the watt rating and the power consumption will differ. We need to take the watt rating into consideration for calculating the instantaneous power needs.
Inverters of 400 - 600 watts are easily available (look for an used one in working condition if possible).
How many hours it lasts depends on the size and condition of the 12V battery. Look for the AH number. Divide that by 12 to get a very approximate value.
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