# calculate watt hours lithium battery

This factor is an estimate of your personal watt hours per mile (Wh/mi) energy consumption. So if a 5 Volt battery has 20 Watt Hour rating, and, it draws 2 Amp current, then the Watt delivered by Battery = 10 Watts ( 5 Volts x 2 Ampere). Here you can start the process of getting the right cell model(s) and configuration for your battery requirements and learn about capabilities and limitations of batteries constructed with standard Li-ion cells. Remaining charge (%): Specify the required remaining charged. Divide your score by 1.609. The electric charge Q (mAh) in milliamp-hours (mAh) is equal to 1000 times the energy E (Wh) in watt-hours (Wh) divided by the voltage V (V) in volts (V):. The energy E (Wh) in watt-hours is equal to the electric charge Q (mAh) in milliamp-hours times the voltage V (V) in volts (V) divided by 1000:. Keep in mind these are just estimates, every time you ride you'll get different actual results. Wh to mAh calculator milliamp-hours to watt-hours calculation. A higher 'Efficiency Score' means you're likely to consume more energy per mile.