BYD Battery-Box Premium LVS 4.0kWh – 12940053-00

Enhance your energy independence with the BYD Battery-Box Premium LVS 4.0kWh low-voltage lithium iron phosphate (LFP) module. This high-efficiency battery delivers 4.0kWh of usable energy with 95% round-trip efficiency, designed for flexible parallel expansion in residential and commercial solar systems. With IP55 protection and robust communication capabilities, it ensures reliable performance in diverse installations.
Key Features

4.0kWh usable capacity – Full nominal energy availability with zero degradation

LFP technology – Superior safety, longevity (6000+ cycles), and thermal stability

Modular parallel design – Scale capacity by connecting multiple units

IP55 protection – Dust-tight and water-jet resistant for indoor/outdoor use

95% efficiency – Maximizes solar energy utilization

Dual communication ports – CAN and RS485 for inverter compatibility

Ground-mounted design – Stable installation for permanent setups

Specifications

Battery Type: DC Low Voltage LFP
Nominal Energy: 4.0 kWh
Usable Energy: 4.0 kWh
Nominal Capacity: 75.0 Ah
Efficiency: 95%
Communication: CAN, RS485 (inverter compatibility)
Protection Rating: IP55
Dimensions: 65.0 × 29.8 × 23.3 cm
Weight: 45.0 kg
Installation: Ground mounted
Scalability: Modular, parallel capable

Applications

Residential solar energy storage
Off-grid and backup power systems
Small commercial energy management
Hybrid inverter applications

Compatible With

Major low-voltage inverters (Victron, SMA, Studer, etc.)
BYD Battery-Box Premium series expansion

Ideal for homeowners and installers seeking a reliable, scalable low-voltage storage solution with premium safety features and exceptional cycle life