VELA CFPV series  (2V) stationary batteries (OPzV battery) are the newly products which developed at the end of the 2005,the performances meet the standard DIN 40742. the capacity is from 60AH to 3000AH .the battery are including 5 points of the characteristics as : 1.gelled electrolyte,no flow,no leakage or no gradation of sulfuric acid. 2. the positive plate is a tubular plate that can prevent the active material from falling off.3.maintenance-free during the whole service life. 4.low self discharge rate. 5.proof against deep discharge according to DIN 43539 T5. VELA CFPV series can be used as UPS power supply, solar power system and wind power system etc..