Battery Management Systems for Large Lithium-Ion Battery Packs
Section 1.4.2 Addenda
Although close to ideal, the Peukert coefficient of Li-Ion cells is not exactly 1.00. Its value is on the order of 1.05
- Due to mechanisms that I totally do not understand, there is a phenomenon called "SOC unbalance evolution", which (in the absence of balancing) results in weak cells to experience a lower and lower SOC as they are cycled, compared to other cells in the pack; this mechanism is seen experimentally, so it is undeniable
Honestly, my understanding of the physics behind Peukert coefficient is too fuzzy to go into any more explanation. I will update this section as my understanding improves.