AIMS Power introduces its new battery product line of LiFePO4 batteries. The LiFePO4 batteries maintain constant output voltage, providing more efficient power. This allows the cell to deliver virtually full power until it is fully discharged without harming the battery, and it can greatly simplify or even eliminate the need for voltage regulation circuitry. The battery has a much longer cycle life capacity, and is easier to maintain compared to other battery technologies. The LiFePO4technology has better thermal and chemical stability, which improves battery safety and packed with power in a small and lightweight footprint. Easily uses the same space as your existing 12V battery and replaces lead acid, AGM or Gel battery applications in RVs, boats, commercial vehicles, off grid back up power and much more. Not intended to replace starting batteries. Features: Extremely high number of charge/discharge cycles10 Year lifespan with proper maintenanceNo need to worry about depth of dischargeWide operating temperature rangeUnsurpassed high temperature performanceGreen energy without metal contaminantLow maintenanceHigh amp capacityStable output voltageLittle self-dischargeBMS safety protectionConvenient removable carry handleLightweight50, 100 & 200 Ah models availableShort circuit protectedPhysical damage to battery case will not cause fireExcessive thermal exposure will not cause a fireAble to withstand over-charge/over-discharge without damage to the batterySophisticated Battery Management System (BMS) Specifications: Nominal Voltage 12.8VNominal Capacity (at .5C, 77 F) 50AhMinimum Capacity (at .5C, 77 F) 47.5AhExpected Cycle Life >4000 cycles w/1C charge and discharge rate, at 77 F, 80% DODCharge Method Smart charger, constant current, constant voltageCharge Voltage Range (Max 14.6V)14.4 -14.6VContinuous Charge Current 50A MaxCharge Temperature 32 F to 113 FContinuous Discharge Current 50A MaxPeak Instant Discharge Current (10 secs) 100AOver Voltage Shutdown 15.6 +/-.2VDischarge Cut-off Voltage 8V =/- .5VDischarge Temperature -4 F to 149 FStorage Temperature -4 F to 113 FSelf Disharge (stored at 50% SOC) < 3%/month600 watt hoursBattery Dimensions 7.8"L x 6.5"W x 6.7"HWeight: 17.75 lb, Shipping Weight: 19 lbGroup Size 1250Battery post size 5/16"BMS OperationOver charge detection voltage: 3.9 +/- .05VOver charge detection delay time: .96 1.4sOver charge release voltage: 3.80 +/-.05VMaximum charge voltage: 3.65 +/-.05VOver discharge detection voltage: 2.0V +/- .05VOver discharge detection delay time: 115-173msOver discharge release voltage: 2.3V +/- .10VOver current detection delay time: 9 +/- 2msOver current release condition: Cut loadPolarity Reverse Protection: YesShort Circuit Protection: YesUPC 840271004570Warranty 3 Yr Manufacturer Defect.