Introducing the Support Lithium/Lead-acid Battery Off Grid Solar Inverter by CKMINE, a reliable and efficient solution for powering your off-grid solar system. It supports power ranges of 3.5kW/5kW, is compatible with 48V/51.2V lithium batteries and lead-acid batteries, has automatic sensing for 50/60Hz, and has full compatibility with global power grids.
With a power factor of 1.0 and efficient conversion, combined with the integrated MPPT controller, the photovoltaic power generation efficiency is maximized.
Functionally, it supports four charging modes (photovoltaic priority, mains power priority, etc.) and three load output modes. The power usage strategy can be customized as desired. Even if communication is interrupted, the battery can continue to supply power to ensure uninterrupted electricity supply.
Installation and maintenance are more convenient. It supports intelligent WiFi remote monitoring (optional), allowing you to keep track of the system status at any time.
From RV power supply to remote village energy storage, the SOL IA S4 series, backed by 20 years of manufacturing experience and multiple international certifications, creates a reliable off-grid energy system for you, covering the "generation - storage - supply" entire process, making off-grid life's electricity accessible at your fingertips.

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.