The wattage needed to charge a flashlight will depend on the battery capacity and the charging time. A typical rechargeable flashlight may require anywhere from 1 watt to 10 watts to charge efficiently. It is recommended to follow the manufacturer's guidelines for the specific flashlight model.
The maximum lumens that a 1-watt LED flashlight can have now is 160.
The time it takes to charge a 12-volt battery with a 13-watt solar panel will depend on various factors such as the battery's capacity, its current state of charge, weather conditions, and efficiency of the charging system. On average, it may take around 8-10 hours of good sunlight to fully charge a depleted 12-volt battery with a 13-watt solar panel.
One watt of energy is equivalent to 0.86 calories.
To convert Watt seconds to milliwatt seconds, you can multiply the value in Watt seconds by 1000. This is because 1 Watt is equal to 1000 milliwatts. So, 1 Watt second is equal to 1000 milliwatt seconds.
To convert Watt seconds to milliwatts seconds, you need to multiply by 1000 since there are 1000 milliwatts in a Watt. For example, if you have 5 Watt seconds, it would be equal to 5000 milliwatts seconds.
The maximum lumens that a 1-watt LED flashlight can have now is 160.
.76 watt
The time it takes to charge a 12-volt battery with a 13-watt solar panel will depend on various factors such as the battery's capacity, its current state of charge, weather conditions, and efficiency of the charging system. On average, it may take around 8-10 hours of good sunlight to fully charge a depleted 12-volt battery with a 13-watt solar panel.
The energy consumption of a modern Cree XP-G or XM-L based flashlight with 170 lumen output can be as low as 1.4 watts with 120 and more lumen per watt. The light output will be approximately equal to a 20 W tungsten incandescent light bulb or a 10 W halogen light.
1 watt will do the job.
To charge a 200 amp-hour battery with a 1000-watt solar panel, you first need to convert the amp-hours to watt-hours. A 200 amp-hour battery at 12 volts has 2400 watt-hours (200 Ah × 12 V). If the solar panel operates at peak efficiency, it can produce about 1000 watts, which means it would take approximately 2.4 hours of peak sunlight to fully charge the battery (2400 watt-hours ÷ 1000 watts). However, considering factors like inefficiencies and varying sunlight, it may actually take longer in practice.
20
Need to see how many amp or watt hours your battery is rated for, many batteries are up to 100 watt hours.your cell phone may hold 1 or so watt hours to give you a comparison. A car battery could maybe charge your phone 500,times before its drained.
Take BTUH and divide by EER. You will get watts.
Consult your laptop's manual or seek this information from the manufacturer of your laptop.
60 watt-hrs= 60 watt*1 hr so it will take 1 hour.
200 Watt Panel