CKMINE Pure Sine Wave Output Off Grid Solar Inverter, a powerful and reliable solution for your off-grid energy needs.It supports power specifications of 3.5kW/5kW and is compatible with 48V/51.2V lithium batteries and lead-acid batteries.
The output power factor is 1.0, and the energy conversion efficiency is industry-leading. The integrated MPPT charging controller (with precise maximum power point tracking) further enhances the utilization rate of photovoltaic power.
In terms of performance, the switching time is in the millisecond range, and there is no perception of power loss during a power outage; it supports operation without batteries, 9 units in parallel, and flexible system expansion; intelligent WiFi (optional) + BMS communication makes operation and management more intelligent.
From home emergency to commercial energy storage, the SOL IA S4 series, with rigorous testing and a comprehensive certification system (ISO, CE, RoHS, etc.), has become a reliable choice in the off-grid power sector.
With 20 years of manufacturing experience, CKMINE safeguards your off-grid solar system, ensuring stable and efficient power supply every time.

FAQ
Q1: Can I get some samples for test
A: Yes, sample order is available for quality check and market test
Q2: Do you accept OEM/ODM
A:Yes, we accept OEM/ODM with your authorization
Q3: How is delivery time
A: Generally it takes 5-10 days for regular type, for big quantity or OEM/ODM orders, please negotiate with sales
Q4: What is the standard of package
A: We have our own design carton with five layers corrugated material; if you have any other special requirement of package, we also support customized service
Q5: What’s your payment terms
A: We accept T/T, L/C, WEST UNION, ALI TRADE ASSURANCE, cash
Q6: What’s your warranty time
A: We offer 12 months warranty service, life time technique support
Q7: How does your factory do the quality control
A: Quality is our culture. We have strict quality control department to supervise each link from assembling to shipping. Products have to be subjected to at least seven strict quality inspection processes before being shipped out
Q8: How can I trust you
A: CKMINE established in 2005, has many years’ experience in producing inverters, we have passed ISO9001, ISO45001, ISO14001 management system and got CE, CCC, ROHS certificates. Assessment reports can be sent anytime if you require.