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 3U design supports wall, floor, rack, or stack installation, and the modular design allows up to 16 units in parallel, scaling 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.
| Flexible Setup | Wall / Floor / Rack / Stack |
| Expandable Design | Up to 16 units in parallel |
| Smart BMS | Safer & smarter power control |
| Screen Options | With or without display |
Features
Safe & Reliable
High safety LiFePO4 battery.
Compliance with lEC62619,UN38.3.CE.
Compact & Flexible
Standard height design.
Modular
Support up to 16 units in parallel,scale from 10kVVh to 160kWh configuration without external controller.
Compatibility
Compatible with most hybrid/battery inverter in self-consumption, back-up and off-grid applications.
Ultra performance
More than 6000 cycles, self-developed BMS/Cell/Pack to ensure best quality.
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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