Xantrex RV Series Inverter/Charger Owner’s Manual

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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