GB/T 19639.2-2007

This part of GB/T 19639 specifies the model numbering, structural dimensions, terminal positions, markings, specifications, and external dimensions of small valve-controlled sealed lead-acid batteries (hereinafter referred to as batteries). This part applies to emergency lighting equipment, uninterruptible power supplies, mobile measurement equipment, and other DC power supply batteries with a rated capacity of 65Ah (inclusive) or less. The individual batteries of such lead-acid battery packs may be flat electrodes installed in square grooves, or wound electrodes installed in cylinders. The sulfuric acid electrolyte in the battery is non-flowing, or adsorbed in the microporous structure between the electrodes, or in the form of a colloid.