Energy Wk 4: Battery

Record the specs for 3 batteries: chemistry, voltage, and capacity (if capacity is in amp hours, can you get to watt hours?).

Energy(wh)  =  voltage * current * time

1.) iPhone XS Battery :

  • Chemistry: lithium ion
  • Voltage: 3.8v
  • Capacity: 2.658 Ah
  • Watt hours: 3.8v * 2.658Ah = 10.1004 Wh

2.) Headphones Battery:

  • Chemistry: Li-Polymer
  • Voltage: 3.7v
  • Capacity: 180mAh
  • Watt hours: 3.7 * 0.18A = 0.666 Wh

3.) FitBit Battery:

  • Chemistry: Lithium Coin
  • Voltage: 3v
  • Capacity: 163mAh
  • Watt hours: 3 * 0.163A = 0.489 Wh

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