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Q: How many ah battery need for 3000w for 8 hours?
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How many hours will 3600 watts last on a 637 amp battery?

To determine the hours a 3600-watt load will last on a 637 amp battery, you need to convert the wattage to amperes. You can do this by dividing the wattage by the voltage of the battery. Assuming a standard 12-volt battery, 3600 watts divided by 12 volts equals a current of 300 amps. Dividing the battery capacity (637 amp-hours) by the current (300 amps) gives you approximately 2.12 hours of runtime.


How long is the battery backup on the Lorex SG7965 good for?

The Lorex's battery backup lasts for about six hours, after which it will need to be recharged.


How many hours have for a 4400 mAh?

This is an informal unit for energy, often used for batteries. mAh = milliampere x hours. If you know how much current you will need (in milliamperes), you can divide the 4400 mAh by the amount of current, to calculate how many hours the battery will last.


How long can you charge your cell phone before your car's battery is drained?

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.


Laptop Computer Batteries?

A laptop computer has a battery that has a wonderful battery life. As long as you charge your laptop battery for the appropriate amount of time, then you can use your laptop without the need to plug it in for many hours. This will allow you to be free and not be tied to finding an outlet to plug in your laptop.


How many amps do you need to charge a car battery?

To charge a car battery you need aproximatly 8000 amps To charge a car battery you need aproximatly 8000 amps


How many watts to charge a 12v battery direct in 6 hours?

To calculate the wattage needed to charge a 12V battery in 6 hours, you need to know the battery's capacity in amp-hours (Ah). Once you have the Ah rating, you can use the formula Watts = Volts x Amps to determine the wattage required for charging. Multiply the battery's voltage (12V) by its capacity in Ah, then divide by the charging time in hours (6 hours). This will give you the minimum wattage needed to charge the battery in 6 hours.


how maney battery do i need a home?

how many batteries do you need for shed


What is the formula to find the mAh you need to run a circuit a certain amount of hours?

(mA of current the circuit draws from the battery when it's running) multiplied by (number of hours you want the circuit to operate from the battery) is equal to the absolute minimum mAh rating the battery must have.


How long W light on ah battery?

The problem here is that "Ah" (ampere-hours) is not a unit of energy. To convert that to units of energy, you need to multiply by the voltage of the battery. The result, of course, will vary depending on the battery type.The result of this multiplication would give you ampere-hours-volts, or watts-hours (watts times hours). Therefore, you can then divide by the number of watts used, to obtain the time (in hours).


How long does it take to recharge a PSP Battery?

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From which Android version does this OS warn for the need of battery replacement after the current battery had too many charges and discharges for working well?

Most of the 4.0 and upward Android version does warn the need of a battery replacement after the current battery has had too many discharges.