4.2kWh Automotive Grade LiFePO4 Home Energy Storage Battery 3.99kWh Usable Energy 90% DOD Wall Mount Solar Backup Battery 20 Units Parallel Expandable
This 4.25kWh residential LiFePO4 energy storage system adopts premium automotive-grade lithium iron phosphate cells, featuring 3.99kWh usable energy and 90% high DOD deep discharge capability. It efficiently stores surplus solar power to lower household electricity expenses and provides reliable emergency backup power during grid outages. Designed with dual wall-mounted and floor-standing installation modes, the slim and lightweight unit supports up to 20 units parallel expansion to meet diversified power demands for different household solar systems. Built-in full-featured intelligent BMS ensures comprehensive safety protection and ultra-long service life. With wide temperature & humidity adaptability and complete international authoritative certifications, this energy storage battery delivers stable, safe, and long-term unattended indoor operation, ideal for global solar installers, system integrators and bulk purchasers.
Specifications & Features
Product Description
Equipped with automotive-grade LiFePO4 cells, total energy reaches 4.25kWh and usable energy is 3.99kWh, supporting 90% high DOD deep discharge, fully store surplus solar power to cut household electricity costs and handle blackout power supply.
Built-in comprehensive BMS management system with overvoltage, overcurrent, short circuit, undervoltage, overheat protection & cell balance function; service life over 15 years under 25℃ environment, 10-year official warranty for reliable long-term use.
Support wall-mounted & vertical floor two installation ways, slim compact dimension 370*500*140mm, only 33kg light weight, fit garage, basement and small apartments without occupying extra floor space.
Expandable design allows up to 20 units parallel connection; equipped with LCD control screen, Bluetooth, CAN/RS485 communication ports, realize real-time battery data viewing and flexible capacity expansion for large household solar systems.
Wide temperature adaptability: charging 0℃~55℃, discharging -20℃~55℃; passed CE, UL1973, IEC62619, UN38.3, MSDS certifications, safe indoor unattended operation within 5%~95% humidity environment.
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