USABC Development of 12 Volt Battery for Start-Stop Application: Preprint

Jeremy Neubauer, Harshad Tataria, Oliver Gross, Chulheung Bae, Brian Cunningham, James Barnes, Jack Deppe

Research output: Contribution to conferencePaper


Global automakers are accelerating the development of fuel efficient vehicles, as a part of meeting regional regulatory CO2 emissions requirements. The micro hybrid vehicles with auto start-stop functionality are considered economical solutions for the stringent European regulations. Flooded lead acid batteries were initially considered the most economical solution for idle-stop systems. However,the dynamic charge acceptance (DCA) at lower state-of-charge (SOC) was limiting the life of the batteries. While improved lead-acid batteries with AGM and VRLA features have improved battery longevity, they do not last the life of the vehicle. The United States Advanced Battery Consortium (or USABC, a consortium of GM, Ford, and Chrysler) analyzed energy storage needs for a micro hybridautomobile with start-stop capability, and with a single power source. USABC has analyzed the start-stop behaviors of many drivers and has developed the requirements for the start-stop batteries (Table 3). The testing procedures to validate the performance and longevity were standardized and published. The guideline for the cost estimates calculations have also been provided, in order todetermine the value of the newly developed modules. The analysis effort resulted in a set of requirements which will help the battery manufacturers to develop a module to meet the automotive Original Equipment Manufacturers (OEM) micro hybrid vehicle requirements. Battery developers were invited to submit development proposals and two proposals were selected for 50% cost share with USABC/DOE.
Original languageAmerican English
Number of pages10
StatePublished - 2015
EventEVS27 International Battery, Hybrid and Fuel Cell Electric Vehicle Symposium - Barcelona, Spain
Duration: 17 Nov 201320 Nov 2013


ConferenceEVS27 International Battery, Hybrid and Fuel Cell Electric Vehicle Symposium
CityBarcelona, Spain

NREL Publication Number

  • NREL/CP-5400-62680


  • 12 v start-stop
  • batteries
  • HEV
  • micro-hybrid


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