Sisemine alalisvoolutakistus ei ole iga elemendi jaoks lihtsalt väärtusarv, mis saadakse mõõtmisel tavaliselt kindlaksmääratud voolutugevuse ja ajaimpulsi abil,.kuna see varieerub sõltuvalt laetuse tasemest, seisundist, temperatuurist ja tühjenemisajast.
The internal d.c. resistance is not just a single number for any given cell as it varies with state of charge, state of health, temperature and discharge time. The internal d.c. resistance of a cell is normally measured using a defined current against time pulse.
