Welcome to Solar System BD — complete solar solutions for home & business
Welcome to Solar System BD — complete solar solutions for home & business
Akaiyai A51R205-W 51.2V Lithium Battery – 10.5kWh LiFePO₄ modular battery, high-capacity, long cycle life, safe & efficient for solar energy storage systems.
The Akaiyai A51R205-W 51.2V Lithium Battery is a high-capacity LiFePO₄ (Lithium Iron Phosphate) battery designed for residential, commercial, and hybrid solar energy storage systems. With a nominal voltage of 51.2 V and capacity of 205 Ah, this battery provides 10.5 kWh of usable energy, making it ideal for powering homes, offices, or small commercial setups.
Its modular design allows parallel connection for system expansion, while a built-in Battery Management System (BMS) ensures safety, efficiency, and long cycle life.
High Capacity & Modular Design – 10.5 kWh per module, expandable via parallel stacking.
Safe & Reliable – LiFePO₄ chemistry with built-in BMS provides overcharge, overdischarge, and thermal protection.
Smart Communication – Supports CAN/RS485 for integration with hybrid inverters and energy management systems.
Long Cycle Life – ≥6000 cycles at 90% Depth-of-Discharge, ensuring years of reliable operation.
Compact & Indoor Friendly – IP20 rated enclosure suitable for homes, offices, or battery rooms.
Residential solar + battery storage systems
Small commercial or office backup power
Off-grid or hybrid solar systems
Modular energy storage for scalable projects
| Model | A51R205-W |
| Capacity | 205Ah |
| Energy（25℃，0.2C） | 10496Wh |
| Nominal Voltage | |
| Internal Resistance | ≤10mΩ@50%SOC |
| Cycle life | ≥6000（@25℃,0.5C/0.5C 70EOL) |
| Months Self Discharge | ≤3%（25℃） |
| Efficiency of Charge | 100%@0.5C |
| Efficiency of Discharge | 96%-99%@0.5C |
| Standard Charge | |
| Charge Mode | CC：0.5C 56V CV:56V |
| Continuous Current | 100A |
| Recom.Charge Current | ≤50A |
| Max.Charge Current | 100A |
| Charge Cut-off Voltage | 56V |
| Standard Discharge | |
| Continuous Current | 100A |
| Recom.Discharge Current | 50A |
| Max.Disharge Current | 100A |
| Discharge Cut-off Voltage | 44.8V |
| Charge and Discharge Temperature | |
| Charge Temperature | -10～55℃@60 ± 25%Relative Humidity |
| Discharge Temperature | -20～55℃@60 ± 25%Relative Humidity |
| Storage Temperature | 0～30℃@60 ± 25%Relative Humidity |
| IP Grade | IP20 |
| Mechanical | |
| Metal Case | Metal |
| Cell&Method | 3.2V 205Ah |
| External dimensions (Contain stand)(mm)(L*W*H) |
562*435*242 |
| Weigh (kg) | 82.2 |
| Terminal | 120A Quick Plug Connector |
| Communication | RS485 RS232 CAN |
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