W5 Series 5.22–20.88 kWh Wall-Mounted Low-Voltage All-in-One ESS (5 kW)

The W5 series is a wall-mounted home energy centre that integrates a built-in inverter and PV input into a single compact unit. Its capacity can be expanded from 5.22 to 20.88 kWh, optimising self-consumption of residential PV while safeguarding critical loads for villas or home offices. In the event of a grid outage it switches to backup within 20 ms, and it communicates via CAN/RS485 for smart monitoring. With a lightweight wall-mount design and 6,000-cycle LFP cells, it delivers reliable, low-footprint energy storage.

Product Specifications

Parameter W5-5K W5-10K W5-15K W5-20K
Cell capacity 102Ah 102Ah 102Ah 102Ah
Rated energy 5.22kWh 10.44kWh 15.66kWh 20.88kWh
Series-parallel configuration 1P16S 2P16S 3P16S 4P16S
Rated voltage 51.2V 51.2V 51.2V 51.2V
Operating voltage range 44.8-57.6VDC 44.8-57.6VDC 44.8-57.6VDC 44.8-57.6VDC
Max. PV input power 5,000W 5,000W 5,000W 5,000W
Max. PV input voltage 500V 500V 500V 500V
MPPT voltage range 150-500V 150-500V 150-500V 150-500V
Start-up voltage 370V 370V 370V 370V
Number of MPPT 1 1 1 1
Max. PV input current per MPPT 30A 30A 30A 30A
Rated input/output power (AC) 5,000W 5,000W 5,000W 5,000W
Rated input/output voltage (AC) 220V/230V/240V (Adjustable) 220V/230V/240V (Adjustable) 220V/230V/240V (Adjustable) 220V/230V/240V (Adjustable)
Rated AC frequency 50/60Hz 50/60Hz 50/60Hz 50/60Hz
Max. output current 22A 22A 22A 22A
Current THD <3% <3% <3% <3%
Power factor 0.8 Leading to 0.8 Lagging 0.8 Leading to 0.8 Lagging 0.8 Leading to 0.8 Lagging 0.8 Leading to 0.8 Lagging
Off-grid/grid switchover time 20ms 20ms 20ms 20ms
Grid connection Single Phase Single Phase Single Phase Single Phase
Dimensions (L×W×H) 634×170×771 634×170×1,146 634×170×1,521 634×170×1,896
Weight 60.8kg 109.6kg 158.4kg 207.2kg
Altitude 4,000m (Derating above 1,000m) 4,000m (Derating above 1,000m) 4,000m (Derating above 1,000m) 4,000m (Derating above 1,000m)
Display LCD Display LCD Display LCD Display LCD Display
Safety protection High/Under Voltage Protection, Short Circuit Protection, Overload Protection High/Under Voltage Protection, Short Circuit Protection, Overload Protection High/Under Voltage Protection, Short Circuit Protection, Overload Protection High/Under Voltage Protection, Short Circuit Protection, Overload Protection
Communication CAN/RS485 CAN/RS485 CAN/RS485 CAN/RS485
IP rating IP21 IP21 IP21 IP21
Operating temperature -15~60℃ (Battery: 0~40℃) -15~60℃ (Battery: 0~40℃) -15~60℃ (Battery: 0~40℃) -15~60℃ (Battery: 0~40℃)
Relative humidity 20%~95% (No Condensing) 20%~95% (No Condensing) 20%~95% (No Condensing) 20%~95% (No Condensing)
Battery cycle life 6,000 Cycles 6,000 Cycles 6,000 Cycles 6,000 Cycles
Installation Wall-Mounted Wall-Mounted Wall-Mounted Wall-Mounted
Certification CE, RoHS, UN38 CE, RoHS, UN38 CE, RoHS, UN38 CE, RoHS, UN38

Product Datasheet

Download the full product specifications and technical data.

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Model variants W5-5K / W5-10K / W5-15K / W5-20K
Rated energy 5.22 / 10.44 / 15.66 / 20.88 kWh
Series-parallel configuration 1P16S / 2P16S / 3P16S / 4P16S
Rated voltage 51.2V
Operating voltage range 44.8-57.6VDC
Max. PV input power 5,000W
Max. PV input voltage 500V
MPPT voltage range 150-500V
Start-up voltage 370V
Number of MPPT 1
Max. PV input current per MPPT 30A
Rated input/output power (AC) 5,000W
Rated input/output voltage (AC) 220V/230V/240V (Adjustable)
Rated AC frequency 50/60Hz
Max. output current 22A
Power factor 0.8 Leading to 0.8 Lagging
Off-grid/grid switchover time 20ms
Weight 60.8 / 109.6 / 158.4 / 207.2 kg
Safety protection High/Under Voltage Protection, Short Circuit Protection, Overload Protection
IP rating IP21
Operating temperature -15~60℃ (Battery: 0~40℃)
Relative humidity 20%~95% (No Condensing)
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