B2 series Low Voltage Battery
The SAJ B2 Low Voltage Battery is a modular, scalable solution up to 40kWh for home solar systems. Built with safe and reliable LiFePO4 batteries, it supports flexible installation, 1C charge/discharge, and IP65 outdoor protection—making it a high-performance LiFePO4 solar battery backup for home with excellent long-term value.
Flexible and Scalable Energy Storage
Safe and Reliable Performance
High-Performance Charging and Discharging

•Modular Design Scalable Up to 40kWh
•Wall-mounted or Ground-mounted offers versatile installation options
•Remote Firmware Upgrade
•LiFePO4 Batteries Safe and Reliable
•IP65 Outdoor Design ensures reliable operation in various environments


•Support 1C Charge and Discharge Rate
•Maximizing energy availability and responsiveness
Related Video
Revolutionize Energy Storage Solutions with SAJ: Client Testimonial in the Netherlands.
SAJ Microinverter M2 Powers Your Home with Brilliance in Brazil.
SAJ's beautiful and stunning case reference in Sweden.