ExpertPower 48V 100Ah Lithium LiFePO4 Deep Cycle Rechargeable Battery 

• Longer Service Life: Our LiFePO4 battery provides 2500 - 7000 cycles & a 10 years lifetime compared to 200 - 500 cycles & a 3 years lifetime in typical Lead Acid chemistry.
• Efficient Power: Our LiFePO4 battery’s flat discharge curve holds above 48V for up to 95% of its capacity usage providing astronomical boosts in run-time compared to only 50% in Lead Acid.
• Impeccably Lightweight: Our LiFePO4 battery is only a 1/3 of the weight of Lead Acid which makes it the disputable choice for RVs, Marine and Off-Grid Applications when towing or mobility is in the consideration.
• Complete Protection: The lithium battery’s unique built-in Battery Management System (BMS) protects it from overcharge, deep discharge, overloading, overheating and short circuit, and excessive low self-discharge rate ensuring up to 1-year maintenance-free storage. 
• Ironclad Protection: A steel-hardened, gray cast iron case provides significant improvements in protection against structural affects versus a typical plastic case that can have its integrity and functionality compromised by excessive heat and mechanical shock during a typical service-life.
• 4 in 1 Wiring: The all-purpose PCB regulates current and voltage fluctuation without the need of external balances or additional BMS protections making the battery smart and powerful enough to be utilized in a system of up to 10 batteries in parallel.
• Streamlined Visual Assessments: Sophisticated monitoring software provides on-demand information for battery health, cell health, BMS protections, regulatory temperature status, and cell balancing leaving peace of mind and confidence in your system.
• Built-in low-temp cut off prevents charging under 23 °F (-5 °C)