(1) This battery is a fully charged and sealed factory activated product equipped with a vent valve. The battery contains a non-floating electrolyte, and the gas formed during use is completely absorbed into the battery, which ensures that the battery is completely maintenance-free. (2) Since the battery is fully activated at the factory, it is imperative that the voltage is maintained continuously, requiring maintenance charging every 12 weeks (or when the battery voltage drops below 12.4 volts) until the battery is put into service. If this is not done, the life of the battery will be shortened and the battery may become unusable. (3) Since the battery is ready for use, care must be taken that the plus and minus terminals are not short-circuited.