Whrs Battery Math
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Just a decision i think would work best for me and perhaps others.
Whrs battery math. But more importantly here is reality. Input these numbers into their respective fields of the battery amp hour calculator. It s a measure of power draw. Note down the voltage.
A 100 watt hour battery can deliver 1 watt for 100 hours 10 watts for 10 hours or 100 watts for 1 hour. Let s explain with more examples. Let s say it s 26 4 wh. Likewise the higher the whr rating of a battery the more juice it supplies.
For a 200 ahr double it 20 hrs a 300 ahr 30 hrs. The battery capacity is equal to 2 2 ah. Then discharging time battery capacity battery volt 0 9 device watt. With 90 power efficiency for li ion lipo batteries.
I read about omar s story its a good one. In this example we will take a standard 12v battery. Choose the amount of energy stored in the battery. Q e v 26 4 12 2 2 ah.
So your calculation is correct. It s very difficult to tell how long a battery will last for a particular laptop as no two laptops are the same. I think i would rather look at percentage and whrs mile and do that math. 5ah 3 7v 0 9 10w 1 66 hours.
E v q. Mah wh 1000 v. However most of those 10 000mah portable batteries are for 5v only to re charge tablets and cell phones they cannot charge laptops. Say 5ah 3 7v 10 watts 1 85 hrs.
The higher the whr rating of a laptop the more battery juice it draws. It uses the formula mentioned above. If it used energy at a rate of 50 watts it would run for 2 hours on a 100 watt hour battery. Discharging time battery capacity battery volt device watt.
What it doesn t tell you is how long any given battery will keep any given laptop going for unless we know what rate the laptop uses energy at. But again one needs to know the ahr of your battery. October 2018 edited october 2018. So they most often range from 100 ahrs to 300 ahrs deep cell or truck battery for a 100 ahr battery x 12 v 1200 whr battery 1 200 whrs 65 w 10 hrs.
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