48V 3500W Parallel All-in-One Solar Charger Inverter

$799.95 $599.95 Save 25%
Compatible with IoT Module & App
Buy One Get One Free WIFI Module
Save $100 on an Inverter + 1 Battery: COMBO100
 30% Federal Tax Credit

  • All-In-One: All-In-One Off Grid Solar Charger Inverter 

  • Rated Power & Peak Power: Output 3500W continuous and 6000W surge power
  • MPPT Charge Controller: 99% Efficiency
  • Operation Mode: Parallel Connection (1-phase / split-phase / 3-phase)
  • Output Waveform: Pure Sine Wave
  • UPS: Uninterruptible power supply within 10 milliseconds if AC power failure
  • 4 charging modes: Only Solar, Mains Priority, Solar Priority and Mains & Solar hybrid charging
  • Dual Intelligent Cooling Fans: Efficiently dissipate heat and extend system life
  • Display: Equipped with LCD Display & 3 LED Indicators.
  • IoT Mobile APP: Real-Time and Remote Smart Controls.
  • Certifications: CE (IEC62109) / cUL (UL1741(include UL1741-SB) & CSA) / EMC EN61000 / RoHS Compliant / FCC  
  • All-round protection: Short-circuit Protection, Overcharge Protection, Reverse Flow Protection
  • Compatibility: Compatible with Lead Acid and Lithium Batteries
  • User-friendly communication modules: RS485 / CAN / USB / Dry Contact Port / Wi-Fi (optional) / GPRS (optional) / Bluetooth (optional)
  • No Load Power Consumption: <50W (or <25W in low power mode)
Inverter: 3500W Inverter
IoT Module: Without Wifi/Bluetooth Communication Module
Shipping & Returns
  • Ships within 24 hours, delivers within 2-5 days
  • Free Shipping - within 48 contiguous United States
  • Local in stock, available for self-pick-up
  • 30-Day Money Back Guarantee!
Inverter: 3500W Inverter
IoT Module: Without Wifi/Bluetooth Communication Module
Product information

Calpha 3500W 48V Parallel All-in-One Solar Inverter Charger

All-in-One Compact Design

Simplify your installation process and say goodbye to complex wire connections. Calpha solar charger inverter combines the functions of a solar charger, solar charger inverter, and inverter, all within a single compact design. This innovative integration not only saves you valuable space but also reduces the time and effort required for installation. With this integrated solution, you not only save valuable space but also reduce the time and effort required for installation. The Calpha solar charger inverter is versatile and compatible with various settings, including homes, cabins, sheds, RVs, and camping.

Monitor & Manage with Ease

Unlock the full potential of the solar inverters for homes with the Calpha IoT mobile app. With the IoT mobile app, you can enjoy the benefits of real-time monitoring, remote control, energy insights, and seamless integration of your inverters and batteries' operating status.

3 easy steps to get IoT mobile App support: 1. Effortlessly connect your WiFi to the solar inverter. 2. Monitor the status of your charger inverter on your mobile device. 3. Personalize usage modes according to your preferences.

Expandable By Parallel Connection

Calpha 3.5kW charger inverter is designed expandable by parallel connection. Connecting multiple solar inverters in parallel can unlock higher power output and meet your growing energy needs. Parallel connection ensures enhanced redundancy and system reliability. If one inverter encounters an issue, others continue to function, minimizing downtime.

Uninterrupted Power Supply

With a lightning-fast response time of less than 0.01 seconds, Calpha solar pure sine inverter charger ensures an immediate reaction to power outages, ensuring uninterrupted operations for your critical devices and appliances. 

MPPT Charge Controller

The solar charge module utilizes advanced MPPT tracking technology to efficiently capture the maximum energy output from solar panels. With an impressive efficiency rating of up to 99.9%, it converts harvested solar energy into usable electrical power with minimal losses.

Real-time Power Updates

Stay informed and in control with the Calpha smart solar inverter charger's LCD display, providing real-time charging and loading information at your fingertips. With its clear and intuitive interface, you can easily monitor the performance of your solar energy system and stay updated on its status.

4 Charging Modes

The Calpha solar inverter offers users four charging modes: Only Solar, Mains Priority, Solar Priority, and Mains & Solar hybrid charging. These versatile charging modes provide reliability and optimize energy utilization, making the Calpha solar inverter an excellent choice for maximizing the benefits of solar power systems.

Intelligent Cooling Fans

Calpha’s off grid solar inverter is equipped with dual automatic cooling fans. These intelligent fans constantly monitor system temperature, adjusting their speed to maintain optimal operating conditions, enhancing efficiency, reliability, and significantly extend the lifespan of your solar power system.

All-round protection

The Calpha solar inverter is equipped with over 10 comprehensive protection functions, ensuring the safety and longevity of both the inverter and the connected solar power system. These protection mechanisms include complete short circuit protection, overvoltage and undervoltage protection, overload protection, backfilling protection, and so on. With these advanced protection features, you can have peace of mind knowing that the solar power system is safeguarded against various potential risks and faults.

Reviewed and Recommended by

Package Includes

3500W 48V Parallel 3-in-1 Charger Inverter


User Manual



Inverter (AC Output)
Rated Power: 3500W Rated Current: 29A
Peak Power Rating: 6000W Output Waveform: Pure Sine Wave
Output Voltage: 120 (100/105/110)VAC Output Frequency: 50Hz / 60Hz(+/- 0.3Hz)
Operation Mode: Single Unit (1-phase) or Parallel Connection (1-phase/split-phase/3-phase) Max. No. of Parallel Units: 6
Max Bypass Current: 40A Max Load of Motor: 2HP
Nominal Efficiency: >95%    

Solar (PV)
Charge Controller Type: Maximum Power Point Tracking (MPPT) No. of MPPT Line: 1
Maximum Input Power: 4400W Maximum Input Current: 50A
Max. Open Voltage: 145V MPPT Input Voltage Range: 60-115VDC
Short-circuit Protection: Equipped with Internal Fuse Wiring Protection: Reverse Polarity
Max. PV Charge Current (Battery): 80A    

Charger (AC Input)
Input Voltage Range: 90-140VAC Frequency: 50Hz/60Hz
Max. AC Charge Current (Battery): 40A Transition Time: 10ms(UPS function)
AC Charge Efficiency: >95%    

Battery Compatibility
Battery Type: Compatible with Lead Acid and Lithium Batteries Rated Voltage: 48VDC
Battery Voltage Range: 40-60VDC Max. Overall Charge Current(Battery): 120A
Short-circuit Protection: Equipped with Breakers and Fuses Reverse Flow Protection: Supported

Model: SCI483500 Dimensions: 16.8*13.5*5.0 inches / 426*342*126 mm
Weight: 23.8 lbs (10.8 kg) Communication Ports: RS485/CAN/USB/Dry Contact Port/Wi-Fi(optional)/GPRS(optional)
Operating Temperature Range: -10°C to 55°C (14°F to 131°F) No Load Power Consumption: <50W (<25W in low power mode)
Waterproof-rating IP20 Certifications: CE(IEC62109)/cUL(UL1741&CSA)/EMC EN61000/RoHS Compliant/FCC
Warranty 2-Year Warranty    

Customer Reviews

Based on 14 reviews
Mike S. Lewis
Easy to install

Value for money

Lawrence S. Seaman
Worth the price

Works great.

Robert L. Downs
Good inverter

So far it has worked really well. I pushed it up to 1600 watts with the vacuum and the TV on. Handled it no problem.

James K. Howe
Great first time use.

Non stop use only problem I had was ac input keep tripping breaker when house power went out. Turn machine off and on works like it should .only using 1500watts still plug more things in one at time. Very happy

Kevin L. Vega
Works as it should.

Replaced different brand with this one. Works as expected.