ESPLThe electrochemical power sources laboratory (EPSL) endeavors are to:

1) Test batteries under representative conditions to assess durability in the field,
2) Establish diagnosis and prognosis using non-invasive and deployable techniques,
3) Model battery packs taking into consideration cell-to-cell variations and inhomogeneities,
4) Monitor deployed systems state of charge and state of health,
5) Transfer knowledge from laboratory to real-life applications to facilitate battery engineering, cost estimate, control strategy, and decisions.


EPSL has been a partner with various research institutions in government, industry, and academia, in the US and abroad. Current and past funding sources include the Office of Naval Research, the US DOE’s Office of Energy Efficiency and Renewable Energy (through the Idaho National Laboratory), the Department of Transportation (via the Electric Vehicle Transportation Center), the Air Force Research Laboratory (through the Hawai‘i Center for Advanced Transportation Technologies), and the Hawai‘i Renewable Energy Development Venture funds.


EPSL Funding


Currently, EPSL researchers are involved in two major projects:

  • The assessment of the remaining useful life of deployed BESS from the characterization of representative usage and the consideration of intra- and extra-modular inhomogeneities (ONR/APRISES).  
  • The assessment of different strategies to track the optimal usage of EV batteries as grid support (ONR/APRISES) Smaller projects involve the development of tools, protocols, and approaches to benchmark various power source and powertrain technologies for different applications from storage, vehicle, second use…


Project Pages:


Current collaborations:


EPSL Collaboration



Matthieu Dubarry