Battery AC Self-Heating at −30 °C: Plating-Limited Warmup
Wired White v1 Find AC frequency, allowable current and time to warm a frozen lithium-ion cell. Includes charge transfer, diffusion, anode polarization limits and heat loss.
#lithium-ion
Wired White v1 
Li-ion Voltage Under Load & Runtime: 2RC Cell Model
Wired White v2 Predict Li-ion cell voltage sag, cutoff time and usable capacity under constant, pulse or drive-style loads, with two RC transients and voltage relaxation.