Lithium energy storage system ESS LV 15KW+64KWH

lead-acidfor solar applicationsfor photovoltaic systems

The ESS LV 15KW+64KWH is a three-phase low-voltage all-in-one energy storage system integrating inverter and BMS with grid-tie capability, built-in MPPT solar charger and support for large-capacity battery packs suitable for industrial and commercial three-phase applications.

Key features

• Integrated inverter and BMS design supporting grid-tie operation
• Built-in MPPT solar charger, max PV power 18 kW, PV voltage range 80–520 VDC
• 400 V three-phase AC input/output for industrial and commercial use
• WiFi monitoring with large LCD display for system status and settings
• Compatible with lithium or lead‑acid batteries; up to 16 units in parallel for lithium for scalable capacity
• High-capacity storage: rated energy 64 kWh, usable energy 57.6 kWh (90% DOD)

Operating conditions

• Ingress protection: IP20 (indoor installation)
• Operating temperature: -10°C to +50°C
• Operating humidity: 5%–95% RH (non-condensing)
• Maximum operating altitude: 4000 m (derating required above 1000 m)

Technical specifications

• Rated AC power: 15 kW
• Surge power: 18 kVA
• Rated battery capacity / energy: 64 kWh (0.5C, 25°C)
• Usable energy (90% DOD): 57.6 kWh
• AC input/output voltage: 400 V / 3L+N+PE
• Rated input voltage range: 400 V / -20% ~ +15%
• Frequency: 50/60 Hz (auto adaptive), accuracy: ±0.1%
• Max PV input: 18 kW (9 kW + 9 kW)
• MPPT voltage / PV operating range: 80 ~ 520 VDC
• Max PV open-circuit voltage: 500 VDC
• Max PV charge current: 200 A
• Solar charger type: MPPT
• Max AC charge current: 160 A
• Max charge current (PV + AC): 200 A
• Nominal battery voltage: 51.2 VDC
• Battery operating voltage range: 40.5 VDC ~ 58.4 VDC
• Max charge / discharge current: 400 A / 400 A
• Max efficiency (battery mode): 93% @ 48 VDC
• Power factor: 1
• Waveform: Pure sine wave
• Switch time: 10 ms
• Overload capacity (battery mode): 60 s @ 102%–110%; 10 s @ 110%–130%; 3 s @ 130%–150%; 0.2 s @ >150%
• Display: LCD
• Communication: USB
• Monitoring: WiFi
• Battery type: Lithium or lead‑acid, up to 16 parallel for lithium
• Ingress protection: IP20
• Storage temperature: -15°C to 60°C
• Relative humidity: 5%–95% (non-condensing)