This Standard specifies requirements for lead-acid batteries of both the vented and the valve-regulated type intended for installation in electric traction vehicles, mechanical handling equipment, diesel starting applications, semi-traction applications (e.g. golf buggies and wheelchairs) and other applications where deep cycling is required. A complete battery consists of one or more self-contained units connected in series or parallel. Each unit consists of individual cells or monoblocs assembled into a battery tray.NOTE: Recommendations for the design of battery trays are given in Appendix A.