Yuasa NP38-12 VRLA sealed batteries deliver standby and backup power for up to five years in commercial service. Key specifications: Nominal potential: 12.0 Volts. Length 197 millimetres, width 165mm (both ±1mm). Height 170mm (±2mm). 20-hour output capacity to 10.5V: 38.0 A/h. 10-hour current capacity to