VELA CFPS series (2V) stationary batteries (OPzS battery) are the newly products which developed at the end of the 2005,the performances meet the standard DIN 40736 and IEC 60896-21,the capacity is from 50AH to 3000AH . the battery are including 5 points of the characteristics as : 1. the positive plate is a tubular plate that can prevent the active material from falling off. 2. the seperator has a high porosity and good corrosion-resistance. 3.the acid-proof bolt is a special shape of funnel having the function of filtering acid smog and retading flame. 4.the design life is more than 20 years. 5. ensuring sufficient electrolyte for battery discharge. VELA CFPS series can be used as UPS power supply, solar power system and wind power system etc.