Given Information:
Ampere-hour of battery = 850 mAh
Voltage of battery = 7.4 V
Required Information:
Overall energy Capacity of battery = ?
Answer:
Overall energy Capacity of battery = 22.64 kJ
Step-by-step explanation:
The overall energy capacity of the battery is found by
Energy = Ah*Voltage*3600
Convert mili-Ampere-hour into Ampere-hour
850/1000 = 0.85 Ah
Energy = 0.85*7.4*3600
Energy = 22,644 J
or
Energy = 22.64 kJ
Therefore, the overall energy capacity of the battery in Joules is 22.64 kJ
Note:
The factor 3600 is used since there are 60*60 seconds in 1 hour
Charge = current*time
Energy = voltage*charge
Energy = current*voltage*time