
By analyzing the CC-CV charging results for LiFePO4 and ternary system batteries under different charging currents and cutoff voltages, it is observed that: (1) With a fixed cutoff voltage, increasing the charging current and decreasing the constant current ratio shortens the charging time but increases energy consumption; (2) With a fixed charging current, lowering the cutoff voltage reduces the constant current charge ratio, resulting in lower charge capacity and energy. [pdf]

Dimensions (l*w*h):6.81*2.83*78.7,Weight:11.5pounds*4PCS=46pounds Service life: more than 5500 cycles,Charging temperature: -5 ~ 60 ° c,Discharge temperature: -30 ~60 ° c Wide range of applications:solar energy storage, solar power system, UPS supply,engine starting , electric bicycle/motorcycle/scooter, golf trolley/carts, power tools [What You Get]4 Pcs 280Ah Lifepo4 battery , bus bars, screws, our worry-free 3-year warranty, and our friendly customer service. [pdf]

Large Capacity 72V 40Ah Lithium ion Battery Pack;No memory effect;Longer cycle life more than 3,500 times;Excellent deep cycle performance;Built-in Battery Management System (BMS);CE / UL / ISO9001 / RohS Certifications;Strong compatibility, wide range of applications, home energy storage, solar power systems, RV storage, ship backup power, etc. [pdf]

Recommendation ITU-T L.1221 is a subpart (Part 2: Battery), of a series of Recommendations (the other Recommendations in the series being Recommendation ITU-T L.1220 and Recommendation ITU-T L.1222) on innovative energy storage systems for stationary power systems of telecom/information and communication technology (ICT) equipment used in telecom networks, data centres and customer premises equipment (CPE). [pdf]
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