What internal resistance is inside a NiMH cell, ACIR vs DCIR measurement, I×Ri voltage sag, I-squared-R heat and how Ri moves with SOC, temperature and age.
Why NiMH powers solar lights and energy harvesters: trickle-charge tolerance, dusk-to-dawn energy budgets, outdoor endurance and low-self-discharge reserve explained.
NiMH needs less electronics than lithium, but series packs still require matched grading, PTCs and fuses, NTC monitoring and, in some cases, a protection PCM.
