PIONERGY Smart Lithium Iron Phosphate (LiFePO4) Battery integrates smart battery management system (BMS) not only protects this 12-Volt LiFePO4 battery from various abnormal conditions: overcharge, deep discharge, overloading, overheating. The state-of-the-art battery cells ensure a long cycle life and exceptional discharge performance. Compare to heavy-duty lead acid battery, this lightweight, auto-balanced, ultra-safe, long-cycle-life lithium-ion battery is perfect for your outdoor & indoor using.PIONERGY 12V 280Ah LiFePO4 Battery 4000+ Deep Cycle Lithium Battery, 12 Volt Lightweight Rechargeable LiFePO4 Battery with 200A BMS for RV, Marine,Camper, Solar System, Off-Grid Applications About PIONERGY: PIONERGY is professional battery module R&D and manufacturing factory in lithium-iron industry to provide our partners with high-efficiency and high-quality products and services. Our products provide excellent performance in daily life applications, and also running well in extensive and critical areas. The advantage of LiFePO4 battery: PIONERGY Smart Lithium Iron Phosphate (LiFePO4) Battery integrates smart battery management system (BMS) not only protects this 12-Volt LiFePO4 battery from various abnormal conditions: overcharge, deep discharge, overloading, overheating. The state-of-the-art battery cells ensure a long cycle life and exceptional discharge performance. Compare to heavy-duty lead acid battery, this lightweight, auto-balanced, ultra-safe, long-cycle-life lithium-ion battery is perfect for your outdoor & indoor using. PIONERGY LiFePO4 battery using A-Class battery cells, which has the following advantages: 1. Safer: The B-class battery is much danger, it has risk of flammable and explosive. We found that many safety accidents caused by batteries are caused by the use of inferior or second-hand cells. 2. Longer Lifespan: Tested in our laboratory, the capacity of B-class battery will dramatically decrease after using 300-500 times. 3. Stable: The current of LiFePO4 battery using B-class batteries is unstable, The damage of （sudden increase or decrease） current for electronic products is irreversible. How to determine whether the batteries is a B-class ? 1. Appearance: The second-hand cells with have traces of use, and most used batteries are larger in size and heavier in weight. 2. Voltage: After fully charged, the voltage of second-hand cells is only 14V, but A-class batteries can up to 14.4V. Key Words: 【Automotive Grade Battery】Pionergy LiFePO4 battery use Automotive Grade LiFePO4 Cells with higher energy density,more stable performance and greater power. Highest-level safety based on UL Testing Certificate for the cell inside. Perfect for solar home, RV, campers, solar, motor homes, off-grid applications. 【100% Safe】LiFepo4 battery will not burn when overcharged, over discharged, over current or short circuit, and can withstand high temperatures without decomposition. 200A BMS inside can handle cell balancing, low high voltage cutoff, short circuit protection and temperature protection. Without memory effect, no matter what state the battery is, it can be used as soon as it is charged. 【Lightweight and Widely Use】The weight is 61.7 pounds. Our 280Ah 12V lithium battery weighs only 1/3 weight of the same capacity lead acid batteries! With no acid in the battery, you're able to safely mount it in any position. Perfect choice for variety types of backup power application, such as UPS, Fishfinder, Ride on toys, RV etc. Allow to be extended up to 4 in series and 4 in parallel (Max 4S4P) to get more capacity and higher voltage. 【Efficient & Convenient】Pionergy LiFePO4 Battery can be 100% discharged while lead acid battery can only 40%-50% discharged. Charge the same time while use 2 times longer. Also, Pionergy battery has constant power while lead acid battery has steady power drop when use it. More reliable and powerful. 【Best Service】Providing 4000+ cycles while lead acid battery last 300-500 cycles. 5 year battery warranty & lifetime technical support. If you have any questions, please feel free to contact us. Packing List: 1X PIONERGY 12V 280Ah LiFePO4 Battery Pack 2X Terminal Screws Pair 1X Warranty Card 1X Product Manual PIONERGY 12V 280Ah LiFePO4 battery Specifications: Rated Capacity : 280Ah Nominal Voltage: 12.8V Voltage Range: 14.2-14.6V Terminal Type: M8 Dimensions (L x W x H): 20.55*9.45*8.58 inch Weight: 61.7 pounds （lighter weight) Size: 12V 280Ah-Low Temperature Protection Maximum Continuous Charging Current: 200A Maximum Continuous Discharging Current: 200A Operating Temperature: Charge: 32F to 122F; Discharge: -4F to 140F Nominal Voltage 12.8V 12.8V 12.8V 12.8V Charge Voltage 14.2-14.6V 14.2-14.6V 14.2-14.6V 14.2-14.6V Energy 640Wh 1280Wh 1920Wh 3584Wh BMS Board 50A 100A 100A 200A Maximum ContinuousCharging / Discharge Current 50A 100A 100A 200A Max. Load / Inverter Power 640W 1280W 1920W 2560W Wire(s) for Series & ParallelConnection / Loading 8AWG 2AWG 2AWG 2AWG Weight 14.5 lb 24.2 lb 32.4 lb 61.7 lbs Dimension 7.8*6.5*6.7 inch 12.95*6.77*8.42 inch 12.95*6.77*8.42 inch 20.55*9.45*8.58 inch