Home >
Wall-mounted Energy Storage System >
High-Quality 21KWh 51.2V 420Ah BYD Blade Home Energy Storage 48V Backup Battery Stable BMS Customizable Power System Manufacturer, Factories
1 / 3
High-Quality 21KWh 51.2V 420Ah BYD Blade Home Energy Storage 48V Backup Battery Stable BMS Customizable Power System Manufacturer, Factories
Household 21KWh storage system built on BYD Blade cells & stable BMS. Provides instant backup power when power cuts happen, support full customization for home outage use.
What is the expected lifespan of this lithium battery?
Our high-quality lithium batteries are designed for longevity, typically offering over 2,000 to 5,000 deep discharge cycles while maintaining significant capacity, depending on the specific model and usage conditions.
Does the battery include a Battery Management System (BMS)?
Yes, every unit comes with an integrated smart BMS. This system protects the battery from over-charging, over-discharging, short circuits, and extreme temperature variations to ensure safety and stability.
Can I connect these batteries in parallel or series?
Most of our models support both parallel and series connections to increase capacity or voltage. However, we recommend consulting the specific technical sheet above for the maximum number of units allowed for your specific model.
What is the recommended operating temperature?
For optimal performance, we recommend discharging between -20°C to 60°C and charging between 0°C to 45°C. Storing the battery in a cool, dry place will further extend its service life.
Are these batteries environmentally friendly?
Yes, our lithium iron phosphate (LiFePO4) batteries are non-toxic, lead-free, and do not contain rare earth metals, making them a much cleaner and more sustainable choice compared to traditional lead-acid batteries.