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 OPzS Battery 2v3000ah features : 1.Lower self discharge.2.Higher thermal capacity, No thermal runaway will occur.3.Superior deep cycle performance.4.Wide operation temperature range.5.Long service life, designed life 15-20 years.1. Functional Parameter 5. Environment Temperature Nominal Voltage 2VDischarge Temperature -15~55℃Nominal Capacity (10 hour rate)3000AhCharge Temperature -0~45℃Designed Floating Life  20℃ (68° F)15~20years Storage Temperature -15~45℃2. Rated Capacity at 20℃ (68° F)6. Inner Resistance & Max . Discharge Current 5 hour rate (532.9A, 1.75V/cell)3664.5AhFully Charged battery at  20℃ (68° F)0.11mΩ3 hour rate (771.0A, 1.75V/cell)2313.0AhMax. Discharge Current 24000A (5s)1 hour rate (1713.0A, 1.60V/cell)1713.0AhShort Circuit Current 29000A3. Capacity affected by Temperature (10 hour rate)7. Self-discharge  at  20℃ (68° F)40℃   (104° F)103%Capacity after 3 month storage 91%25℃   (77° F)100%Capacity after 6 month storage82%0℃    (32° F)86%Capacity after 9 month storage73%-15℃   (5° F)70%Capacity after 12 month storage64%4. Dimension and Weight 8. Constant voltage charging at  20℃ (68° F)Length 576mmCyclic use2.30~2.40VWidth212mmMaximum charging current 300AHeight 772mmTemperature compensation -5mV/℃Total Height 827mmFloat use 2.23~2.25VReference Weight Without Electrolyte 164.5kgTemperature compensation -3mV/℃OPzS Battery 2v3000ah Typical  Applications :1.Telecommunications.2.Radio and cellular telephone relay stations.3.Emergency lighting systems.4.Power stations, Conventional power stations.5.alternative power (solar, wind).6.Large UPS and computer back-up.7.Railway signalling.8.Maritime standby power on ships and ashore.9.Standby power.10.Buoy lighting.