Operation
3–6 975-0209-01-01
Typical Battery Draw of Common Appliances
If the current draw at 120 Vac is known, then the battery amperage at 12 Vdc will
be 10 times the AC amperage divided by the efficiency (90% in this table).
Motors are normally marked with their running rather than their starting current.
Starting current can be five times running current.
Refrigerators and ice makers typically run about one-third of the time. Therefore,
their average battery current draw is one-third of what their amp rating would
indicate.
Appliance Watts
Amp Hours Consumed Over Time
5 min 10 min 30 min 1 hr 2 hr 4 hr
Single PL light 10 .1 .3 .7 1.3 2.7 5.3
Computer 10012481734
Color TV 13" 200 2 4 8 17 34 67
Blender 400 3 8 17 34 67 133
Skil Saw 800 6 173467133266
Toaster 1000 8 23 46 93 185 370
Microwave 1200102857114227455
Hot Plate 1800154488176353706
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