The Teseq NSG 4070 offers a wide test frequency range, from 9 kHz to 1 GHz and its modular set-up, using internal or external amplifiers, make it suitable for a wide variety o f test applications.
Specifics on ac resistance and why ACIR has become a standard measurement for Li-ions. The 1-kHz test frequency for ACIR and why it's the benchmark frequency. Comparing ACIR test vs. electrochemical ...