Features thick plate so that the battery has a longer life flame-way exhaust valve so that the battery is safe and has a long life and durability of polypropylene (PP) battery compartment cover absorbed glass fiber technology allows gas recombination efficiency of up to 99 %, the electrolyte is maintenance-free function UL certification Multi grid cell design makes installation and maintenance more economical battery can be used in any orientation. Placing special provisions in line with the International Air Transport Association / International Civil Aviation Organization vertical, lateral or side A67, may aviation into operation. It may be non-hazardous materials waterway transport computer-designed low calcium lead alloy grid, to minimize the amount of gas produced, and easy recycling slot cover can prevent leakage of heat seal adhesive applications: alarm systems; contingency lighting systems; electronic equipment; rail, ship; post and telecommunications; electronic systems; solar energy, wind power generation systems; large-scale UPS and computer standby power supply; fire standby power; front load compensation value storage devices. 1, maintenance is simple: the gas generated inside the battery charging substantially reduced to absorb the electrolyte plate, basically no electrolyte feed the phenomenon, as a general battery that does not need to equal pay and charging, maintenance simple (but there is need for periodic Check the total voltage and appearance). 2, the liquid-holding high: the electrolyte is absorbed in a special partition, remain flowable state, so under normal operating conditions, can also be used even if the fall (down more than 90 degrees can not be used) 3, safety Superior: from extreme charging operation errors caused excessive gas, to some extent, can be released to prevent rupture of the battery. 4, minimal self-discharge: use of special lead-calcium alloy production grid, the self-discharge to a minimum, can long-term preservation. 5, long life, the economy is good: use good corrosion resistance special lead-calcium alloy grid, have a long floating life. Gas generated during normal float charge, can be absorbed well, so under normal operating conditions, will not be reduced due to the electrolyte to reduce the capacity of the phenomenon. Special spacer can hold an electrolyte, while pressing with a strong positive plate active material, to prevent loss of live material, so long life, is also a longer cycle life when deep discharge, is a very economical battery. 6, internal resistance: Due to the more high-current discharge resistance is small, the better the characteristic. 7, after the excellent deep discharge recovery performance: the battery and the load on the battery discharge connection with long-term negative, but if this happens, as long as the full charge does not appear substantially reduced capacity, will soon be restored.