A certain lithium battery weighs 0.6 g and has a capacity of 2250. mA hr (that is, the cell can store charge equivalent to a current of 2250. mA flowing for 1 hr). LiFePO4 + 6 C ® LiC6 + FePO4

Question

-What is the capacity of this cell in coulombs?

Answer 1

2250 mA is equivalent to 2.250 A. Amps are Coulombs / sec.

So, if that amount of charge flows per second, then the charge that will flow per hour is given by

Q = 2.250 C /sec x 60 sec/min x 60 min/hr = 8100 C / hr.