Hi Ganesh,It is a very simple | Electronics › Electronics › CALCULATE BATTERY RUN TIME › Hi Ganesh,It is a very simple October 21, 2013 at 4:54 am #10536 AJISH ALFREDParticipant Hi Ganesh, It is a very simple calculation. 300mAh means the battery can supply 300mA for 60 minutes. Your total current consumption is 425mA + 100mA = 525mA If battery can runs for 60 minutes with 300mA, then it will run for ( 300 / 525 ) * 60 = 32 minutes.
