GR-1275-CORE has four levels of Field Service and Installation Technicians. Many of the tasks contained within refer to work not directly associated with batteries. In light of this, in the early 2000’s, the Institute of Electrical and Electronic Engineers (IEEE) Stationary Battery Committee (SBC) decided that a standard should be written that solely focused on stationary batteries. This was to become known as IEEE Standard 1657, IEEE Recommended Practice for Personnel Qualification for Installation and Maintenance of Stationary Batteries. This also details four skill levels but differs somewhat from GR-1275-CORE as it focuses only on battery work.