Product Description 【Great Lithium Battery】Our 12V 50Ah LiFePO4 battery have exceptional quality since they are manufactured by better LiFePO4 Cells with higher energy density, more stable performance & greater power. Highest-level safety based on UL Testing Certificate for the cell inside the battery. This makes LiFePO4 batteries perfect for solar home, RV, campers, motor homes, off-grid applications. 【10 Years Lifetime】Our LiFePO4 battery provides 4000~15000 cycles and a 10-year lifetime compared to 200~500 cycles & a 3-year lifetime in lead acid battery.【Automatic BMS】The built-in Battery Management System (BMS) protects your battery from Over Charge and Discharge, Over Current, Short Circuiting, as well as Low and High Temperature for increased performance and longer life. The BMS will automatically cut off the battery and the voltage will drop below 1V. Only when the circuit is cut off, the battery will automatically reactivate after 1 second(No longer need a higher voltage input to activate).【Lightweight & Easy to Move】The LiFePO4 battery weighting only 12.65 lbs for one module, it’s weighs only 1/3* the weight of lead acid batteries. LiFePO4 battery is 50% lighter than lead acid battery with the same capacity. Item Specification:1. Rated Capacity: 50 Ah2. Nominal Voltage: 12.8V3. Energy: 640Wh4. BMS: 50A5. Max. Continuous Output Power: 640W6. Max. Continuous Charge Current: 50A7. Max. Cont Discharge Current: 50A8. Charging Voltage: 14.4V~14.6V9. Discharge Voltage: 8V~10V10. Storage Temperature Range: 5°F~122°F11. Charge Method: Battery Charger、Solar Panel + Charge Controller、Battery Generator12. Dimension: 9.1 x 5.3 x 7.1 inch13. Weight: 12.65 lbs 14. Number of Series and Parallel Connection: 4P4S Package included:1X 12.8V 50Ah Battery Payment Method * Please pay the money within 4 days after the auction ended. * Non-Paying Bidders: Serious Buyer Only! Please place bid or "Buy it now" only if you agree the price and terms of the product and no argument after the auction end. And payment must be received within 4 business days of the auction close. We will report Non-paying buyer to eBay. Delivery Detalis * Our shipping rates include the cost of shipping, handling, packaging and related manpower costs.* We are not responsible for wrong or undeliverable address. We reserve the right to charge the shipping fee again for returned items due to wrong address. Terms of Sales * It is our goal to provide our customer 100% satisfaction. * 30 Days Money Back Guarantee and Full One Year Limited Warranty from the date of original purchase. * Product should be returned with original packages and must be returned in like-new condition with all accessories and packaging. * In all cases, buyers pay shipping fees at their own cost to return products for exchange or refund. We will be responsible for the postage of replacements. Refund will be made upon receipt of the returned item. * If the return is due to the mistakes of buyers, for example, wrong purchase, no need of the batteries after transaction, or other artificial damages, P&P would be deducted while refunding. * Refund will be made upon receipt of the returned item. Contact Us * We have always been trying our best to provide the best service and reliable products for every customer. Please contact us via eBay message or email to resolve the issue before leaving negative feedback.