How Do I Calculate The Wattage Of An Appliance?

If the label does not specify the wattage, but you know the Amperage (A), you can calculate it using the following formula: Amps (A) * voltage (V) = Watts Example: 3 Amps * 220 volt = 660 watts 3 Amps * 110 volt = 330 watts

Type Amps & Voltage of your Appliance
Amps:
Volt: Wattage:

How Long Can I Run The Inverter On My Battery?

The difference is the type of battery you want to run your power inverter on. Most vehicles run off a 12 volt battery. The 24 volt are generally used in large trucks or industrial motors. For more information please visit PowerBright.com

Battery Capacity
Choose your Battery type and enter Amps/Hrs of your battery & wattage of your appliance:

Battery:
Total Hrs:
Amp/Hrs:
Wattage:
Total Min:

Operating Time For Common Electronics

Inverter Output Power (Watts) Typical Load Battery Size
BCI Group Size 22NF 24 27 8D dual 8D
Reserve Capacity 90 Min 140 Min 180 Min 400 Min 900 Min
Amps-Hrs 50 75 100 200 400
50 Stereo System Operating Time 9 Hours 14 Hours 20 Hours 40 Hours 80 Hours
100 19″ Color TV Operating Time 4 Hours 6 Hours 10 Hours 20 Hours 40 Hours
200 Computer System Operating Time 2 Hours 3 Hours 4.5 Hours 10 Hours 20 Hours
300 Blender Operating Time 1.3 Hours 2.2 Hours 3 Hours 6 Hours 12 Hours
400 Power Drill Operating Time 1 Hour 1.5 Hours 2 Hours 4.5 Hours 10 Hours
600 Small Coffee Maker Operating Time N.R. N.R. 1 Hours 2.5 Hours 6 Hours
800 Small Microwave Operating Time N.R. N.R. N.R. 1.5 Hours 4 Hours
1000 Toaster Operating Time N.R. N.R. N.R. 1 Hour 3 Hours
1500 Full Size Microwave Operating Time N.R. N.R. N.R. 0.5 Hour 2 Hours
2500 Hair Dryer & Washing Machine Operating Time N.R. N.R. N.R. 0.2 Hour 0.8 Hours

Usage Chart For Common Electronics

Electronics Average Wattage Recommended 12V Inverter Recommended 24V Inverter Recommended Transformer
CD, Tape, Radio, Receiver System 250 XR400-12 ML400-24 VC500W
CRT/Tube TV (Average) 250 PW900-12 ML900-24 VC750W
Home theatre 250 PW900-12 ML900-24 VC750W
LCD TV (Average) 200 XR400-12 ML400-24 VC750W
Plasma TV (Average) 350 PW900-12 ML900-24 VC750W
Radio 71 XR100-12 ML400-24 VC100W
Rear Projection TV (Average) 200 PW900-12 ML900-24 VC750W
Television (Color, Solid State) 200 XR400-12 ML400-24 VC750W
VCR/DVD 21 XR100-12 ML400-24 VC100W
Game Consoles Average Wattage Recommended 12V Inverter Recommended 24V Inverter Recommended Transformer
Nintendo Wii 119 XR400-12 ML400-24 VC300W
Playstation 3 197 XR400-12 ML400-24 VC500W
Xbox 360 187 XR400-12 ML400-24 VC500W
Computer & Accessories Average Wattage Recommended 12V Inverter Recommended 24V Inverter Recommended Transformer
PC desktop (Average) 350 XR400-12 ML400-24 VC500W
PC laptop (Average) 100 XR175-12 ML400-24 VC300W
Computer (With Monitor and Printer) 365 PW900-12 ML900-24 VC1000W
Tools Average Wattage Recommended 12V Inverter Recommended 24V Inverter Recommended Transformer
Drill 500 PW900-12 ML900-24 VC1000W
Power Tools (Circular Saw) 1800 PW2300-12 ML2300-24 VC3000W
Small Appliances Average Wattage Recommended 12V Inverter Recommended 24V Inverter Recommended Transformer
Air Conditioner (Small to Medium Unit) 800-1500 PW2300-12 ML2300-24 VC2000W
Air Conditioner (Medium to Large Unit) 3500 PW6000-12 N/A N/A
Blender/food processor (Average) 750 PW1100-12 ML1500-24 VC1500W
Cell phone charger (Average) 65 CW150 ML400-24 VC100W
Clock 3 XR100-12 ML400-24 VC100W (must be 50/60Hz compatible)
Coffee Maker 1000-1800 PW2300-12 ML2300-24 VC2000W or TK1650 (if used overseas)
Curling Iron 1500 PW2300-12 ML2300-24 VC2000W
Fans 60 XR400-12 ML400-24 VC300W
Flat Iron / Curling Irons 550 PW900-12 ML900-24 VC750W
Hair dryer (Average) 550-1850 PW2300-12 ML2300-24 VC2000W or TK1650 (If Used Overseas)
Hair Dryer (Hand Held) 1600 PW2300-12 ML2300-24 VC2000W
Iron 1400 PW2300-12 ML2300-24 VC2000W
Space heaters (Average) 1500 PW2300-12 ML2300-24 VC3000W
Appliances Average Wattage Recommended 12V Inverter Recommended 24V Inverter Recommended Transformer
Air Conditioner (12,000 BTU) 1500 PW2300-12 ML2300-24 VC3000W
Air Conditioner (36,000 BTU) 4500 PW6000-12 N/A Not recommended to use with transformer due to high wattage – would need to be hardwired
Blender 385 PW900-12 ML900-24 VC750W
Bug Zapper 40 XR400-12 ML400-24 VC100W
Chest freezer (1.3 Cubic Ft) 80 PW900-12 ML900-24 VC750W
Chest freezer (3.0 Cubic Ft) 150 PW900-12 ML900-24 VC1000W
Chest freezer (6.0 Cubic Ft) 240 PW2300-12 ML2300-24 VC2000W
Clothes Dryer 5000 PW6000-12 N/A Not recommended to use with transformer due to problems with Hz (cycles)
Coffee Maker (Auto Drip) 1165 PW1500-12 ML1500-24 VC2000W
Convection Oven 1500 PW3500-12 ML3500-24 VC3000W
Dehumidifier (20 Pints, Summer) 450 PW900-12 ML900-24 VC750W
Dishwasher (Dry Cycle) 1200 PW1500-12 ML1500-24 VC1500W
Disposal 420 PW900-12 ML900-24 VC750W
Fan (Ceiling) 80 XR400-12 ML400-24 VC200W
Freezer (Automatic Defrost 15 Cubic Ft) 440 PW900-12 ML900-24 VC750W
Fry Pan 1200 PW1500-12 ML1500-24 VC1500W
Garage Door Opener 350 PW900-12 ML900-24 VC500W
Humidifier (Winter) 177 PW900-12 ML900-24 VC500W
Microwave Largest Size PW2300-12 ML2300-24 VC2000W
Microwave Oven 1500 PW2300-12 ML2300-24 VC2000W
Mini Fridge (Average) 60 (Standby) PW900-12 ML900-24 VC500W
Mixer, Hand 100 XR400-12 ML400-24 VC300W
Refrigerator/Freezer (Frostfree, 17.5 Cubic Ft) 450 PW1100-12 ML1500-24 VC1000W
Satellite Dish (Includes Receiver) 360 PW900-12 ML900-24 VC500W
Standard Fridge (Average) 230 (Standby) PW2300-12 ML2300-24 VC2000W
Sub-Pump 750-1500 PW2300-12 ML2300-24 VC2000W
Sump Pump (1/2 HP) 500 PW1100-12 ML1500-24 VC1000W
Toaster 1400 PW2300-12 ML2300-24 VC2000W
Vacuum Cleaner 1560 PW2300-12 ML2300-24 VC2000W
Waffle Iron 1200 PW1500-12 ML1500-24 VC2000W
Water Pump (1/2 HP) 460 PW1100-12 ML1500-24 VC1000W