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[Sunjoy Energy Powered by BYD Blade Cells] Upgraded with authentic BYD Blade LiFePO4 cells, offering industry-leading structural safety, high energy density, and exceptional puncture resistance for premium residential storage.

[6.912KWh Ideal Home Capacity] Featuring a 135Ah nominal capacity at 51.2V, providing the perfect energy matrix size for daily household solar load-shifting or reliable emergency emergency backup.

[3500+ Deep Cycles Lifespan] Engineered with highly stable Lithium Iron Phosphate chemistry, guaranteeing over 3,500 complete cycles at 80% DOD for a dependable 10+ year product service life.

[High-Current 200A Capability] Supports robust power demands with a maximum continuous charging and discharging rate of 200A, allowing it to effortlessly handle high-wattage home appliances.

[Smart BMS & Slim IP54 Design] Outfitted with an intelligent central BMS (RS485/RS232/CAN) for seamless inverter integration, housed in an ultra-compact sheet metal enclosure (only 125mm thickness) rated at IP54.

Smart Energy Independence with Authentic BYD Blade Cells

Embrace premium clean energy autonomy with the Sunjoy Energy SJR-51135LFP 51.2V 135Ah LiFePO4 Energy Storage System. Expressly upgraded for modern smart homes, residential solar arrays, and remote off-grid cabins, this 6.912KWh battery pack integrates authentic BYD Blade Cells. Renowned for their blade-like structural design, superior thermal management, and flawless safety record under extreme conditions, these cells make our system one of the safest and most reliable residential energy choices available.

Reliable Lifespan & Enterprise-Grade Protection

The SJR-51135LFP delivers an exceptional life cycle of over 3,500 deep cycles at 80% Depth of Discharge (DOD). To guarantee ongoing on-site safety, the premium BYD blade cell matrix is continuously monitored by our Smart Battery Management System (BMS). The BMS manages cell balancing and deploys instantaneous automatic hardware protections against short-circuits, over-charging, over-discharging, and any thermal or current anomalies.

Compact Inverter Integration & Engineering Excellence

Designed to fit effortlessly into your existing environment, the battery features a sleek, low-profile sheet metal structure with a thickness of only 125mm, making it an exceptional space-saving setup for garages, basements, or utility rooms. With its built-in RS485, RS232, and CAN bus communication architecture, the Sunjoy Energy battery achieves plug-and-play synchronization with premier hybrid inverter brands worldwide. Rated at IP54 for water and dust resistance, it is fully optimized to provide years of whisper-quiet, maintenance-free operation.

Battery Parameters

• Brand / Manufacturer: Sunjoy Energy

• Model Number: SJR-51135LFP

• Battery Cell Technology: BYD Blade Cells (LiFePO4)

• Nominal Voltage: 51.2V

• Nominal Capacity: 135Ah

• Nominal Energy: 6.912KWh

• Working Voltage Range: 43.2V – 57.6V

• Cycle Life: ≥ 3500 Cycles @ 80% DOD

• Self-Discharge Rate: ≤ 2% per month (@ 25°C & 50% SOC)

• Communication Interfaces: RS485 / RS232 / CAN

• Bluetooth & Wi-Fi: Optional Telemetry Upgrades

• Compliance Certifications: CE / UN38.3 / MSDS

Charging & Discharging Performance

• Charging Voltage Config: 57.6V

• Charging Mode: CC-CV (Constant Current - Constant Voltage)

• Maximum Charging Current: 200A

• Maximum Continuous Discharging Current: 200A

• Charging Cut-off Voltage: 57.6V

• Discharging Cut-off Voltage: 43.2V

Climate & Environmental Thresholds

• Charge Temperature Range: 0°C to 45°C (32°F to 113°F) @ 60±25% RH

• Discharge Temperature Range: -20°C to 60°C (-4°F to 140°F) @ 60±25% RH

• Storage Temperature Range: 0°C to 45°C (32°F to 113°F) @ 60±25% RH

• Operating Humidity Range: 10% to 85% RH (Non-condensing)

Structural Parameters

• Enclosure Casing Material: Heavy-Duty Sheet Metal

• Product Dimensions (W x H x D): 1120 x 510 x 125 mm (Slim Compact Profile)

• Product Weight: Approx. 70 Kg (154.3 lbs)

• Water & Dust Ingress Rating: IP54