Product Datesheet
The SUNWAY SW51B314TL2 is a LiFePO₄ battery for residential and commercial energy storage, available in 51.2V (16kWh) and 48V (15kWh) versions to meet different system standards.
Its compact floor-mounted design allows easy installation and stable performance, while the modular structure supports up to 16 units in parallel, expanding from 10kWh to 160kWh.
Built with high-safety LiFePO₄ cells and SUNWAY’s intelligent BMS, it offers over 6000 cycles, remote monitoring, and two options — with or without a display screen for flexible use.
Certified by IEC62619, UL1973, UN38.3, CE, and UKCA, it ensures reliable, safe, and long-lasting power for modern energy systems.
Installation | Floor mounted |
| Expandable Design | Up to 16 units in parallel |
| Smart BMS | Safer & smarter power control |
| Screen Options | With or without display |
Features
Ⅰ. Safe & Reliable
High safety LiFePO4 battery.
Compliance with lEC62619,UN38.3.CE.
Ⅱ. Compact & Flexible
Standard height design.
Ⅲ. Modular
Support up to 16 units in parallel,scale from 10kVVh to 160kWh configuration without external controller.
Ⅳ. Compatibility
Compatible with most hybrid/battery inverter in self-consumption, back-up and off-grid applications.
Ⅴ. Ultra performance
More than 6000 cycles, self-developed BMS/Cell/Pack to ensure best quality.
Ⅵ. Intelligence
Strong pre-charge and balancing capability.Remote data history & firmware upgrading function.
| Items | 48V/314AH | 51.2V/314AH |
Nominal voltage | 48V | 51.2V |
Nominal capacity | 314Ah | 314Ah |
Nominal energy | 15KWh | 16KWh |
Max. voltage range | 42V~54.75V | 44.8V~58.4V |
Charge voltage | 54.7V | 58.4V |
Float voltage | 54V | 57.6V |
Recommend charge current | <150A | <150A |
Max. charge current | ≤200A | ≤200A |
Recommend discharge current | <150A | <150A |
Max. discharge current | ≤200A | ≤200A |
Communication | RS485 /CAN | RS485 /CAN |
Peak discharge current | 200A@3mins | 200A@3mins |
IP rating | IP20 | IP20 |
Cycle life | ≥6000 cycles | ≥6000 cycles |
Net weight | ~115kg | ~120kg |
Dimension(W*H*D) | 740*380*250mm | 740*380*250mm |
Cell type | Lithium-iron phosphate | Lithium-iron phosphate |
Design life | 15 years | 15 years |
Charging Temperature | 0~65ºC | 0~65ºC |
Discharging Temperature | -20~65ºC | -20~65ºC |
Relative humidity | 5%~90%, No condensation | 5%~90%, No condensation |
Install altitude | ≤3000m | ≤3000m |
Install location | Indoor | Indoor |
Installation | Floor mounted | Floor mounted |
Certification | IEC62619 / UN38.3 / CE / CEC | IEC62619 / UN38.3 / CE / CEC |
Floor 10, Building 7, Cross-Border E-Commerce Supervision Zone, 50 Meters North Of Huguang Road And Qianzhang Road, Hefei, Anhui, China
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