As a big battery manufacturers in China,Website: ,we supply many different kinds of batteries,such as the lead acid AGM battery,Gel battery,AGM deep cycle battery,Gel deep cycle battery,OPzV battery,OPzS battery ..etc .The following is our OPzV Battery 2v3000ah features : 1.Completely sealing throughout the batteries life.2.Service life up to 18-20 years in continuous float operation down to approx 80% capacity.3.Gel electrolyte.4.Low gassing thanks to antimony-free alloy and internal oxygen recombination.5.Minimum space required and room requirements are minimal e.g. no washing facilities needed, ventilation requirements are minimal.6.Easy to move and handle.7.Easy install using cable connectors with insulated terminal covers.8.Ready for immediate use without further commissioning work.9.Can be supplied as a standard vertical installation or by special request, for a horizontal installation.10.Very low self-discharge <50% of rated capacity in 2 years at 20 ℃ ambient temperature.11.High cyclic ability over 600 cycles when discharged at 10 hour rate to an end voltage of 1.8Volt/cell at 20℃.12.Deep discharge protected, a load can be connected to the battery for up to 4 weeks.13.No internal short circuits possible due to the gel structure.14.No acid stratification, so noequalizing charge necessary.1. Functional Parameter 5. Environment Temperature Nominal Voltage 2VDischarge Temperature -20~55℃Nominal Capacity (10 hour rate)3000AhCharge Temperature -10~50℃Designed Floating Life  20℃ (68° F)20years Storage Temperature -20~50℃2. Rated Capacity at 20℃ (68° F)6. Inner Resistance & Max . Discharge Current 5 hour rate (513A, 1.75V/cell)2565AhFully Charged battery at  20℃ (68° F)0.16mΩ3 hour rate (754A, 1.75V/cell)2262AhMax. Discharge Current 4000A (5s)1 hour rate (1697A, 1.60V/cell)1697AhShort Circuit Current 12000A3. Capacity affected by Temperature (10 hour rate)7. Self-discharge  at  20℃ (68° F)40℃   (104° F)102%Capacity after 3 month storage 94%25℃   (77° F)100%Capacity after 6 month storage88%0℃    (32° F)90%Capacity after 9 month storage82%-15℃   (5° F)70%Capacity after 12 month storage76%4. Dimension and Weight 8. Constant voltage charging at  20℃ (68° F)Length 576mmCyclic use2.35~2.40VWidth212mmMaximum charging current 600AHeight 772mmTemperature compensation -5mV/℃Total Height 807mmFloat use 2.25~2.29VReference Weight 220kgTemperature compensation -3mV/℃OPzV Battery 2v3000ah  Typical  Applications :1.Telecommunications2.Radio and cellular telephone relay stations3.Emergency lighting systems4.Power stations, Conventional power stations, alternative power (solar, wind)5.Large UPS and computer back-up6.Railway signalling7.Maritime standby power on ships and ashore8.Process and control engineering9.Standby power10.Buoy lighting