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
100
1
2
4
8
17
34
Color TV 13"
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
Содержание RV2012GS
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