The Solar Step
SUNSYNK 5.5KW Hybrid Inverter + WIFI DONGLE (SYK-SG04LP1-5KW-L)
SUNSYNK 5.5KW Hybrid Inverter + WIFI DONGLE (SYK-SG04LP1-5KW-L)
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Sunsynk 5.5kW Hybrid Inverter + Wifi Dongle SYK-SG04LP1-5KW-L
SUNSUNK 5KW HYBRID INVERTER
Higher yields.
- Improve the self-consumption ratio by up to 80%, reducing your electricity bill.
- DC/AC ratio up to 1.3, completely suitable for double-side PV modular.
- Two MPPT designs, Max. the efficiency of 97.6%.
User-friendly.
- LCD Touch screen and buttons, easy operation.
- Compatible with lithium-ion battery and lead acid battery.
- Web browser and mobile App monitoring are supported.
Reliable.
- PV lighting protection, Anti-islanding protection, Leakage current protection, etc.
- Support store energy from DG when needed, and ensure the system working within 7*24H.
- IP65 protection degree, adapt to indoor and outdoor use.
- Automatically switch from on-grid to off-grid mode within 5ms.
- Zero exporting function, the fast reaction within 200ms in zero export mode.
Smart.
- Programmable charging and discharging schedule.
- Both wind turbines and solar panels can be connected as DC input power.
- Max. 16 units can be paralleled for higher system power.
- Retrofitting of existing solar system to energy storage system.
Battery Input Data
- Battery Type: Lead-acid or Li-lon
- Battery Voltage Range (V): 40-60V
- Max. Charging Current (A): 120A
- Max. Discharging Current (A): 120A
- Charging curve: 3 Stages/Equalization
- External Temperature Sensor: Optional
- Charging Strategy for Lithium Battery: Self-adaption to BMS
PV String Input Data
-
Max. PV Access Power : 10000WMax. PV Input Power : 8000WMax. PV Input Voltage : 500VStart-up Voltage : 125VPV Input Voltage Range : 125~500VMPPT Voltage Range : 150~425VFull Load MPPT Voltage Range : 300~425VMax. Operating PV Input Current : 18Ad.c + 18Ad.cNo. of MPPT/No. of Strings per MPPT : 2/1+1
AC Output Data
- Rated AC Output and UPS Power (W): 5000W
- Max AC Output Power (W): 5500W
- Peak Power(off-grid): 2 times of rated power, 10 S.
- AC Output Rated Current(A): 21.7.4A
- Max.AC Current(A): 25A
- Max Continuous AC Pass-through(A): 35A.
- Output Frequency and Voltage: 50Hz; 240Vac,
- Grid Type: THD<3%(Linear load<1.5%).
- Current Harmonic Distortion: THD<3% (Linear load<1.5%).
Efficiency
- Max. Efficiency: 97.60%
- Euro Efficiency: 96.50%
- MPPT Efficiency: 99.90%
Protection
- PV Arc Fault Detection: Integrated (Except European Type)
- PV Input Lightning Protection: Integrated
- Anti -islanding Protection: Integrated
- PV String Input Reverse Polarity Protection: Integrated
- Insulation Resistor Detection: Integrated
- Residual Current Monitoring Unit: Integrated
- Output over Current Protection: Integrated
- Output Shorted Protection: Integrated
- Output over Voltage Protection: Integrated
Certifications and Standards
- Grid Regulation: UL1741, IEEE1547, RULE21, VDE0126, AS4777, NRS2017, G98, G99, IEC61683, IEC62116, IE61727
- Safety Regulation: IEC62109-1, IEC62109-2
- EMC: EN61000-6-1, EN61000-6-3, FCC 15 class B
General Data
- Operating Temperature Range ( C ): -25—60 C , >45 C Derating
- Cooling: Fan
- Noise (dB): <30
- Communication with BMS: RS485; CAN
- Weight (kg): 20.5
- Size (mm): 580 X 330 X 208mm
- Protection Degree: IP65
- Installation Style: Wall-mounted
- Warranty: 5 years
Warranties:
All inverters and batteries must be installed by a qualified electrical wireman or Master electrician with a valid registration with the Department of Labour. A valid electrical certificate of compliance (COC) must be issued once installed, specific to the installation of the backup or solar system. The installation must be compliant with SANS 10142 and ALL its parts. Any warranty claim submitted without installation photos, a valid COC and proof of a qualified wireman/master electrician installing the unit, can be rejected and will render the warranty claim null at void.
Let customers speak for us
from 181 reviewsEXCELLENT SERVICE
Great service 👏 thank you
I recently purchased an inverter from The Solar Step, and I couldn’t be more impressed with the experience. I placed my order on Monday, and it was delivered to Pietermaritzburg by Wednesday—incredible turnaround time!
A special shoutout to Kersh, who kept me updated every step of the way. Her expert product knowledge was top-tier, and she went above and beyond by referring me to a dedicated technician who helped verify the exact battery and inverter compatibility before setup.
Top-notch communication, lightning-fast delivery, and genuine customer care. I highly recommend The Solar Step to anyone looking for reliable solar products and expert advice!
great I'm super happy
Order from the page easy,. The delivery was fast as delivery person keep you informed. The indicator installment the next day, easy to install and lights are very clear to from s distance. Thank you for fast respond and delivery and a exalted product
Happy client
Great product , great service and fast delivery
If you contact the shop, there is always someone answering the call, very friendly, helpful, and professional.
Quote recceive, money paid, was delevered on time...
Great deal ,Great stuff members,
Product was available immediately for pick- up. Will definitely use them again. Pricing was also good.
Bateries are working good and was delivered as promissed on time to western cape rural area. Thank you.
The staff is very professional and very knowledgeable about their products. The purchase was easy and very quick. I purchased a Lithium battery for my 3 head camera and it's been on ever since especially when there is no sun. I am very happy with my purchase.
I will always prefer solar step, I have ordered solar and they have arrived quickly and they’re working properly. I will always recommend solar step to everyone and hoping to call again soon
Great service. The product itself is quite fancy with lots of options to select. I am very impressed. Money well spent

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