Huhman, B. M.Heinzel, J. M.Mili, Lamine M.Love, C. T.Wetz, David Alan2019-10-082019-10-0820170013-4651http://hdl.handle.net/10919/94410State-of-Health (SoH) is a critical parameter for determining the safe operating area of a battery cell and battery packs to avoid abuse and prevent failure and accidents. Experiments were performed at the US Naval Research Laboratory (NRL) on a 4P1S cell array using pulsed discharge and electrochemical impedance spectra (EIS) to determine a single-point SoH frequency for the array as a whole. Individual cell EIS measurements were taken, as well as measurements of the array as a whole. This work will discuss experimental results to date. (C) The Author(s) 2017. Published by ECS. All rights reserved.application/pdfenCreative Commons Attribution-NonCommercial-NoDerivatives 4.0 InternationalArticle - Refereedhttps://doi.org/10.1149/2.0631701jes16411945-7111