how to calculate time of battery?
481962
In the ideal/theoretical case, the time would be Time(H) = Capacity(Ah)/Current(A). If the capacity is given in amp-hours and current in amps, time will be in hours (charging or discharging). Feel Confused? Let's see an actual case, 10 Ah battery delivering 1A, would last 10 hours.
66455
The current can be found from Ohm's Law, V = IR. The V is the battery voltage, so if R can be determined then the current can be calculated.
304784
Calculate hours between two times: =TEXT(B2-A2, "h") Return hours and minutes between 2 times: =TEXT(B2-A2, "h:mm") Return hours, minutes and seconds between 2 times: =TEXT(B2-A2, "h:mm:ss")
914473
Convert 55 minutes to hours. - Time Calculator. 55 minutes equals 0.92 hours.
187383
['Go to Settings > Battery.', 'Tap on Battery Health.', "You will see what the 'maximum capacity' of you battery is - this is a measure of your battery capacity relative to when the battery was new. ... ", "Below that is an indication of the battery's 'Peak Performance Capacity'."]
276962
['=end-start =5:00PM-8:00AM =0.375-0.708=.333//8hours.', '=1-start+end.', '=IF(end>start, end-start, 1-start+end)', '=MOD(end-start,1)', '=end-start.', '=C5-B5.']
189001
Battery Age: Battery age is determined by the manufacturing date. A battery is considered “fresh” if it is less than 6 months old. Most date codes are stamped on the battery case or label and begin with two characters, a letter and a number.
124237
Charging the battery takes up to 3 hours, and an icon will appear on screen to indicate that the device is charging.
102335
['In cell B2 type the start time, enter a space, and then type “a” for AM or “p” for PM, and press Enter. In cell C2, type the end time, including “a” or “p” as appropriate, and press Enter. ... ', 'In cell D2, subtract the end time from the start time by typing the formula: =C2-B2, and then pressing Enter.']
609156
To see an overview of your battery level and activity for the last 24 hours and up to the last 10 days, go to Settings > Battery. When you tap one of the columns on your screen, you can see which apps contributed to your battery usage during that time period, and the proportion of battery used for the app.
536039
['Hold down the Alt/Option key.', 'Click the battery charge icon at the top right of the desktop near the clock.', "After the Condition heading at the top of the menu you'll see one of four battery status messages: Normal, Replace Soon, Replace Now, and Service Battery."]
1245194
['Subtract the hours.', 'Subtract the minutes.', 'If the minutes are negative, add 60 to the minutes and subtract 1 from hours.']
259970
['t = √(2y/g)', 't = √[2*(200 m)/(9.8 m/s2)]', 't = √(40.8 s2)', 't = 6.39 s.']
1294572
A 1 amp-hour battery will give you 1 hour of runtime at a 1 amp load, or 1/2 an hour of runtime at a 2 amp load. Similarly, a 5 amp-hour battery will give you 5 hours of runtime at a 1 amp load. With a 5 amp draw, that 5Ah battery will give you an hour of runtime.
429569
['Swipe Down from the Top of the Screen.', 'Tap on Today Tab. Scroll up to reveal the Edit button.', 'Tap the Edit Button.', 'Add Batteries to the Today Widget. Tap the green/white + button next to Batteries.', 'You Should Now See Batteries in the Today List. ... ', 'Turn on a Paired Bluetooth Device to Reveal Its Battery Status Under Today.']
1431499
Plug the other end into a USB port on your computer or other USB charging device. Typical charge time on an empty battery takes 1 hour. While charging, the indicator light will be red. Once fully charged the light will turn green.
241799
['While holding down he option key, click the battery icon in your status bar (top right corner)', 'You battery health will appear at the top as either: Normal, Replace Soon, Replace Now, or Service Battery.']