Quote:
Originally Posted by Ag&Au
Some things are being over simplified in these analyis.
Watts is a measure of how much power can be delivered in a instant. In order to find our much energy it would take to run the blanket all night you need watt-hours.
A typical electric blanket can draw up to 200 watts. That times 8 hours equals 1600 watt hours.
The device you are looking at has a battery capability of storing up to 220 Watt hours maximum. So it would power the electric blanket for a little over an hour. You would need at least 8 of them to go all night. That's a 1600 dollar investment. You could get a lot of nights at a fancy campground with electric hook ups for that.
Ken
P.S The electric blanket should not care if power is pure sine wave or not and probably would even work on 120 volts DC. But that would also be a pretty costly investment in batteries.
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I checked her blanket and it says that it should use a max of 180 watts (per hour???). But that is on high, she would keep it on high for maybe 30 min. tops. Then she would cut it down to maybe 20% power for the rest of the night. So correct me if I am doing my math wrong:
30 minutes on high = 90 watts
3 hours at 20% = 105 watts
That leaves 5 watts left over so this might keep the blanket going for almost 4 hours according these rough calculations.
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