12V24AH sealed battery Maintenance Free type Model: NP24-12 Dimension: ... to research, develop and manufacturing of theLead Acid battery. Through 10 years of development, JYC has ... performance: The fully charged and completely fixed battery, with 4mm amplitude and 16.7HZ frequency do ... temperature of 25 degrees Celsius, the fully charged battery discharges with fixed resistance which is equivalent to ...