0
The Raspbery Pi runs on a 5 volt power supply. 5 watts at 5 volts is 1 ampere. 1 ampere is 1000 milliamperes. This would seem to indicate that a battery pack rated at 5000mAH (5000 milliamperes per hour) should run for 5 hours with a load that is drawing 1 ampere.
However, this presupposes that the battery is delivering a potential difference of 5 volts. Since the Raspberry Pi contains a 5 volt linear regulator on it's power input rail, the battery has to deliver at least 6.5 volts for the Raspberry Pi to function correctly (to compensate for the voltage drop inherent in any linear regulator.)
Also, if the battery's voltage is significantly higher than this, it would drain much faster and possibly damage the Raspberry Pi board.
Look up Ohm's Law for more information on these calculations.
Add your answer:
Earn +20 pts
What is the difference between 4000 mAh and 4400 mAh lithium ion battery?
4400 mAh means that the battery can produce 4400 mA for one hour. Similarly, 7200 mAh means 7200 mA for one hour. In reality, these specifications are for a eight-hour rating, meaning that the 4400 mAh battery can produce 550 mA for eight hours but, comparatively, you can just ratio the ratings, so the 7200 mAh battery will last 60% longer than the 4400 mAh battery There's more to it than that, however, as you need to know that the laptop is designed to use either battery, otherwise the camparison is meaningless.
How long psp1000 battery 3600 mAh last?
arround 1 hour just joking around 7 hours at medium brightness and low volume.
What year did u.s. quit building nuclear power plants?
The last reactor to be given a full power license was Watts Bar 1, Tennessee, owner TVA, and this was in 1996. Nothing has been built and operated since then. There are plans to complete Unit 2 which was suspended during completion of Unit 1.
How much does a civil engineer earn per month in RSA?
how many hours will you sincerely work from your desk or site per day divided by your company policy multiply by no of hours you wasted and square it by your taxes and then at last multiply by ZERO. Thats it man got to know that from the attitude of your working style..
How many hours of charge can 600 mAh hold?
A 600 mAh battery can produce 75 mA for about 8 hours. If it is called upon to deliver 600 mA, it will last somewhat less than one hour. This is because ampere-hour ratings for batteries are, by standard agreement, normalized to an eight-hour rate. The actual rating is only a comparative rating, so you could properly say that a 900 mAh battery, for instance, will last 1.5 times longer than a 600 mAh battery.
How long does a 5000mAh battery last?
If you divide the 5000 mAh by the current used (in mA), you will get the number of hours the battery will last.
How long does a 12v 7ah 20hr battery last?
Depends on the current draw of what you hook it up to. At a draw of 7 amps (80 watts) it'll last for one hour. At a draw of 1 amp(12 watts) it'll last for 7 hours, ASO.
How many hours would a 35 watts tv last on a 12 volt battery?
To answer this question the amp/hours of the battery must be stated.
How many hours does a incandecent light bulb long?
it depends,the flourecent kind hols 60 watts,lumens has 120 and they last for 10,000 hours.
How long would a 85 amp hour battery last using 35 watts?
85/35=2.4286 hours.
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.
What is Fiona Watts future?
Fiona Watts future is she will fall in deep romantic love and it will last forever
How long will a 12 volt battery provide 100 watts?
To calculate the duration a 12 volt battery will provide 100 watts of power, you can use the formula P = V x I, where P is the power (100 watts), V is the voltage (12 volts), and I is the current. Rearranging the formula to solve for current, we get I = P / V. Plugging in the values gives I = 100 watts / 12 volts = 8.33 amps. The battery's capacity, typically measured in ampere-hours (Ah), can then be used to determine how long the battery will last. If the battery capacity is say 50Ah, you can divide the capacity by the current to find how long the battery will last: 50Ah / 8.33A = approximately 6 hours.
What is ian last name from taking the stage?
watts
How long did the Watts riots of 1965 last?
6 days.
How long could 90 Js of energy light a 40 Watt light balb.?
To calculate this, we first need to convert the energy from joules to watt-hours. 90 joules is equal to 0.025 watt-hours. Therefore, with 0.025 watt-hours of energy, a 40 watt light bulb would last for approximately 0.000625 hours or 0.0375 minutes.
What does 63 whr mean?
It stands for watt-hour. In relationship to batteries, it measures how many watts in an hour a battery can sustain. A 63 watt-hour battery will supply 63 watts for 1 hour, or 6.3 watts for 10 hours or 31.5 watts for 2 hours, etc. It is extremely difficult to determine, from this number, how long your equipment (say, a laptop) will run using a 63 hour battery. The thing for which this number is most useful is battery comparison. A 20 WHr battery will last twice as long as a 10 WHr battery and half as long as a 40 WHr battery and so on.
