The US2000B is an HESS battery system provided by PylonTech, developed with their own Lithium Iron phosphate cell to ensure the highest safety value and most promising life cycle. A self designed BMS protects the cell from abnormal temperature, current, voltage, SoC and SoH. The US2000 is 

Pylon US2000 2.4kWh Li-Ion Solar Battery (excl. brackets)

Advantages

• Vertical industry integration ensures cycle life of 6000 cycles 
• Compact and fashionable design fits in your home environment
• Deliver up to 2.4kW* with single module (2.4KWh) - * please note this value is inverter/charger dependant, typically the maximum sustained value is 1.2kW per battery
• Modular design gives the end customers the power of choice of capacity
• Compatible with large number of Hybrid inverters
• Simple buckle fixing minimize the installation time and cost
• Safety Cert.TÜV CE UN38.3

You can now register the Pylon US2000 for an additional 3 years of manufacturer warranty for free. Go to http://www.pylontech.com.cn/service/support and complete the information in the 'sign up battery' page. 

NOTE: A minimum of 4 x US2000 Pylontech batteries are recommended to supply a 5kW inverter since each battery only provides a maximum of 1.2kW power. The energy rating is 2.44kWh, however, the recommended usable energy is 2.2kWh to ensure the battery does not exceed 90% depth of discharge.