300 mamp to amp how to#
300 mamp to amp portable#
300 mamp to amp Bluetooth#

In physics, the ampere (symbol: A, often informally abbreviated to amp) is the SI base unit used to measure electrical currents. Milliamps to amps, or enter any two units below: Enter two units to convert From: So, each, night, my fan uses 45 amp hours.You can do the reverse unit conversion from How many amp hours does the fan use each night? 5 A × 9 hrs = 45 Ah Let's imagine I have a 12V fan that uses 5 amps and I leave it on 9 hours every night while I'm sleeping. To convert amps to amp hours, simply multiply amps by hours.Ĭonversion formula: amp hours = amps × hoursĬalculator: Amps to Amp Hours Conversion Calculator Example

300 mamp to amp how to#

How to Convert Amps to Amp Hours (A to Ah) So, your phone on average draws 0.25 amps. But how much current does it use on average? 4000 mAh ÷ 16 hrs ÷ 1,000 = 0.25 A Of course, your phone uses a variable amount of current depending on what you're doing with it. Let's say your phone battery is rated at 4000 milliamp hours and it typically lasts for 16 hours. To convert milliamp hours to amps, divide milliamp hours by hours and then divide by 1000.Ĭonversion formula: amps = milliamp hours ÷ hours ÷ 1000Ībbreviated formula: A = mAh ÷ hrs ÷ 1000 Example How to Convert Milliamp Hours to Amps (mAh to A) Also, phone chargers often output 1 amp at 5 volts, while phone batteries are typically 3.7V batteries, so we should take voltage into account by converting the battery's capacity from milliamp hours to watt hours and the charging current from amps to watts. Note: This phone charger example is simplified because the charger may not be outputting 1 amp continuously over the entire charge cycle. Over those 2 hours, your phone charger outputs 2000 milliamp hours, which would charge your phone to about 50%. You want to find out how many milliamp hours the phone charger outputs over 2 hours. Let's say you have a phone charger that outputs 1 amp, and your phone has a 4000 mAh battery.

300 mamp to amp portable#

And now you can estimate that your portable battery pack has about 14,000 milliamp hours remaining capacity.Īlso, converting amps to mAh is useful for estimating how much energy a battery charger can output in a given period. The USB light consumed a total of 6000 milliamp hours. To find this out, you can do the following calculation: 2 A × 3 hrs × 1000 = 6000 mAh You run your light off the battery pack for 3 hours and want to know how many milliamp hours it used. Why Convert Amps to Milliamp Hours?Ĭonverting amps to milliamp hours is useful when determining how much energy a device has consumedįor instance, suppose you have a USB light that draws 2 amps, and you're running it off a 20,000 mAh portable battery pack.

300 mamp to amp Bluetooth#

So, in this example, your Bluetooth headphones have consumed 700 milliamp hours. How many milliamp hours have they used? 0.1 A × 7 hrs × 1000 = 700 mAh Let's say you have a some Bluetooth headphones that consume 0.1 amps, and you've been wearing them for 7 hours. To convert amps to milliamp hours, multiply amps by hours and then multiply by 1000.Ĭonversion formula: milliamp hours = amps × hours × 1000Ībbreviated formula: mAh = A × hrs × 1000 Example How to Convert Amps to Milliamp Hours (A to mAh)

Note: Don't see the values you're looking for in this table? Use our amps to mAh calculator at the top of this page to calculate them for your specific scenario. Here is a conversion table converting common values of amps to milliamp hours, over a duration of 1 hour and 1 day. Or would you rather convert milliamp hours to amps? Amps to Milliamp Hours Conversion Table