Xantrex RV Series Inverter/Charger Owner’s Manual
32
Typical Battery Draw of Common Appliances
TIME IN MINUTES
APPLIANCE WATTS 5 15 30 60 120 240
Single PL Light 10 .1 .3 .7 1.3 2.7 5.3
B & W TV 50 .4 1 2 4 8 17
Computer 100 1 2 4 8 17 34
Color TV 200 2 4 8 17 34 67
Blender 400 3 8 17 34 67 133
Skil Saw 800 6 17 34 67 133 266
Toaster 1000 8 23 46 93 185 370
Microwave 1200 10 28 57 114 227 455
Hot Plate 1800 15 44 88 176 353 706
AMP HOURS
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 1/3 of what their amp rating would indicate.
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