Product Description Description Our portable 12V 50Ah (With 50A BMS) Lithium-Iron Phosphate Battery provides off-the-grid power supply for 4WD vehicles, caravans, campers, trailers, motor-homes, marine applications, and all 12V appliances including portable fridges and washers. The 50Ah 12V battery features an incredible cycle life of up to 5000 cycles, making it one of the most enduring in its class. What you get is a longer, consistent and more drawn out charge all the time. The integrated smart battery management system (BMS) not only protects this 12V 50Ah LiFePO4 battery from various abnormal conditions but monitors and manages the charging/discharging process. The state-of-the-art battery cells ensure a long cycle life and exceptional discharge performance. The maintenance-free deep cycle battery is completely sealed, spill-proof and does not leak gas for added safety and durable use. Lithium-Iron Phosphate battery is smaller and generally weights less than half of what comparable lead acid battery does. Less stress during installation, and less strain on wherever you end up installing it. Invest in this sealed, maintenance-free battery for your off-grid system today! About our battery's BMS The unique built-in battery management system (BMS) of our products lithium battery can protect it from overcharge, deep discharge, overload,overheating and short circuit, and low self-discharge rate. Our BMS has a high temperature disconnect function. When the internal temperature of the battery reaches 75℃ ( 167°F ) it will automatically disconnect to protect the battery. With overcharge and over discharge protection functions, when the overcharge voltage exceeds 15V or the over discharge voltage is lower than 8.8V, the battery will automatically disconnect. Our recommended charging voltage and discharging voltage are 14.6±0.2V and 10v±0.2V, respectively. If the charging voltage is lower than 13.8V, the battery power (with a deviation of 1-2°/o) cannot be fully charged. About our battery's cell Lithium-ion batteries have high energy density and high average output voltage, The self-discharge is small and there is no memory effect. The wide operating temperature range is -20℃-60℃. Excellent cycle performance, fast charging and discharging, charging efficiency up to 100%, and high output power, long service life. It does not contain toxic and hazardous substances and is called a green battery. About the parallel and series of our batteries Our Lifepo4 batteries can be connected in parallels and in series for larger capacity and higher voltage. We suggest that: 1.the Max connection in series is : 4 batteries to 48V 2.the Max connection in series/in parallels: Support 4 series and 4 parallel (in the case of simultaneous series and parallel connection) 3.the Max connection in parallels is(In the case of separate parallel connection, no series connection) : it can connect multiple batteries, and no more than 10 batteries in parallel. Products of different manufacturers and different capacity batteries cannot be connected in series or in parallel . When the batteries are used in parallel or series, the voltage must be the same. It can support fast charging and solar panel charging. SPECIFICATIONS Nominal Capacity: 50Ah Cut-off Voltage: 10V Usable Capacity: 50Ah Nominal Voltage: 12.8V Energy: 576Wh Max.Load/Inverter Power 640W Charge Voltage: 14.6V Discharge cut-off voltage: 10V Max. Continues Charge Current: 50A Max. Continues Discharge current: 50A Peak discharge current: 150A (Duration: less than 5 seconds) Cycle Life: 4000 - 5000 times Dimension: L198xW166xH170mm （7.79in*6.54in*6.69in） Weight: Approx.5kg/11lbs Working Temperature:Range Charge: 0°C--50°C Discharge: --20°C--60°C Storage Temperature: -10°C--50°C Payment Policy 1.We accept payment by ebay. 2.We only post the item to your eBay shipping address, Please make sure your shipping address is correct and updated before you pay. 3. We have no responsibility for shipping address provided. Due to the secure reasons. we are not allowed the address change through email. 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 for purchases must be received within 7 business days of the auction close. We will report Non-paying buyer to eBay . Shipping Policy 1.All items will will be sent out through USPS /FedEx within 24 hours after payment is cleared on the working days. Your parcel tracking number will be added to your ebay within 24 hours 2. The item will be sent to your address listed in the eBay or PayPal. Please make sure your shipping address is correct. 3. Please provide the phone number (add to it on your eBay shipping details) and detailed address with us after you pay the payment via PayPal. The phone number and detailed address is very important for expediting the delivery. Items delivery may be delayed without providing a telephone number. 4. Item delivery time depends on customs, the carrier, Holidays and weather condition in your location. If you wait until estimate delivery, you haven’t received item,Please logo your local post office tracking system to check. if you haven’t view the updated shipment, Please do contact us. We are contacting to Logistics Company and look your item exact location. If we cannot find your item. We will resend or full refund money to you. We do not want to give you a bad buying experience. Please do not open case within Estimated delivery time, because it is vital important to us. 5. You will be notified once the shipment has been made. 6. A business day is a normal weekday. Saturdays, Sundays, and major holidays are not business days. Returns Policy 1. All items have checked carefully before shipping. 2. We stand behind our quality products. We offer a 30 day hassle-free money back guarantee, return shipping is responsibility of the buyer unless the return is a result of our mistake (i.e., your receive the wrong item or defective). If you receive your item and it is defective or not working due to manufacturers defect, we will replace the item for you or refund. You will need to inform us through eBay messages system after you receive your item, Please tell us the Detailed Problem and we will try our best to solve it for you. 3. If within your one year warranty period your item has any problems, you may return the item for a replacement. 4. If you have any questions,please feel free contact us. CONTACT US eBay messages system instead of our email mailbox lest we can't receive your message!!! We will respond you as soon as possible. LiFePO4 12V Lithium Cycle Rechargeable Battery 12.8V 17Ah For Cycle For Solar RV 40.49 USD 44.99 USD Free shipping 10% off 20Ah LiFePO4 Lithium Battery 6000+ Deep Cycles For Radio Scooter 256Wh Portable 66.49 USD 69.99 USD Free shipping 5% off LiFePO4 Built-in BMS Protection Rechargeable Lithium Iron Phosphate Battery 6V 23.74 USD 24.99 USD Free shipping 5% off LiFePO4 Lithium lron Phosphate Battery 12V 15Ah Built-in BMS for RV Marine NEW 45.59 USD 47.99 USD Free shipping 5% off 12V 9Ah LiFePO4 Rechargeable Battery Solar System 3.7*5.95*2.56 Inch 2000 Cycles 34.99 USD Free shipping 12V 200Ah LiFePO4 Lithium Battery Built-in 200A BMS Board Solar Power Supplies 284.99 USD 299.99 USD Free shipping 5% off powered by