Bare PCB Board 4000W 24VDC 220VAC Pure Sine Wave Bidirectional UPS Inverter Charger Motherboard for Lithium Battery Systems

• Customization: Available
• Metal Coating: Copper
• Mode of Production: SMT
• Model NO.: UPS-4000W
• Layers: Double-Layer
• Base Material: FR-2
• Certification: RoHS, ISO
• Customized: Customized
• Condition: New
• Rated Power: 4000W
• Surger Power: 8000W
• Battery Charging: Include
• Keywords: Inverter Charger Circuit Board
• Waveform: Pure Sine Wave
• Input Voltage: 24V/48V
• Output Voltage: 220V/230V/240V
• Frequency: 50Hz/60Hz
• Communication: RS485(Optional)
• LCD Display: Optional
• Total Harmonic Distortion: Thd≤3%
• No Load Current: 26V: 660mA/53V: 700mA
• Charging Current: 24V: 20A 48V: 10A
• Remote Control: Optional
• Protections: Multi-Layer Protection
• Transport Package: Carton
• Specification: 380*215*77mm
• Trademark: GYOPO
• Origin: Wuhan, Hubei, China
• HS Code: 853400090
• Production Capacity: 1000000
• Package Size: 47.00cm * 29.00cm * 16.00cm
• Package Gross Weight: 8.000kg

Product Description

Bare PCB Board 4000W 24VDC 220VAC Pure Sine Wave Bidirectional UPS Inverter Charger Motherboard for Lithium Battery Systems

UPS-4000W: 4000W/8000W Peak Bi-Directional Pure Sine Wave Inverter Board with UPS Function
Designed for advanced energy solutions, the UPS-4000W is a versatile and intelligent bi-directional inverter PCB that supports both DC-to-AC and AC-to-DC conversion, integrated battery charging, and true uninterruptible power supply (UPS) functionality. Perfect for custom energy storage systems, DIY enthusiasts, RVs, specialty vehicles, and small solar installations.

Product Parameters

Model	UPS-4000W
Applicable battery types	Lead-acid battery / lithium battery / gel battery / water battery
Continuous and peak power	4000W/8000W
INPUT
DC input voltage	24V/48VDC
AC input voltage	195-265VAC
Battery low voltage protection	20.0±0.5VDC/40±0.5VDC
Battery low voltage recovery	25.2±0.5VDC/50.4±0.5VDC
Battery high voltage protection	31.6±0.5VDC/63.2±0.5VDC
Battery high voltage recovery	29±0.5VDC/58±0.5VDC
OUTPUT
AC output voltage (Battery Mode)	230VAC±15%
AC output voltage (Mains Mode)	Automatically Follow The Mains Power
Frequency	50HZ/60HZ(Automatic identification)
Waveform	Pure Sine Wave
Total harmonic distortion	THD≤3%
Efficiency(Peak)	88-92%
Transfer time	8.4ms (inverter transfer to mains) 15ms (mains transfer to inverter)
No load current	26V:660mA/53V:700mA
CHARGING
Battery voltage	24V/48VDC
Float charging voltage	28.2VDC/56.8VDC
Full voltage	29.6VDC/59.2VDC
Maximum charging current	24V: 20A 48V: 10A
Pre-charging current	2A
Charging mode	Constant Current - Constant Voltage - Float Charge
Status indication	Working: green LED, Fault: red LED+alarm, Charging: red
	Charging: red (charging), green (full), yellow (fault)
OTHER PARAMETERS
Fan control(Inverter)	When the temperature exceeds 45ºC, all three fans will operate simultaneously
Fan control(Charging)	When temperature >40ºC/charging current>3A:Start a fan
	When temperature <35ºC/charging current<1A:Fan stops running
Overheating protection	Overheat trip at 90°C Recovery at 60°C
Protection functions	Under Voltage / Over Voltage / Overload / Short Circuit / Overheating/Reverse Connection
Noise	45 decibels (at 1 meter distance)
LCD fault code description	+01:Overload Protection
	+02:Under Voltage Protection
	+03:Output Short Circuit or Equipment Overheating
	+04:Over Voltage Protection
Running time	H (hours), M (minutes) +00 (numeric value)
LCD display content	Input Voltage / Input Electrical Energy / Output Voltage / Output Power / Output Frequency / Fault Code
Technical characteristics	Full power/Pure sine wave/High performance/Strong shock resistance/Constant power technology
Operating temperature	-10ºC to +50ºC
Storage temperature	-30ºC to +70ºC
Operating humidity	≤90ºC Non-freezing
Product dimensions	380×215×70MM
Product weight	4.2KG
Optional accessories	LCD Display/Pure Copper Terminal Blocks/ Wireless Remote Control/              Self-recovering fuse
Warranty	18-Month Non-Human-Induced Warranty
Certification	CE/ROHS/ISO9001/ISO14001/ISO45001

Product Description

Bi-Directional Power Conversion
* DC to AC: Delivers 4000W continuous (8000W peak) pure sine wave AC output.
* AC to DC: Built-in smart charger with up to 20A max charging current (24V system), 10A max charging current (48V system)
* Seamlessly switches between grid power and battery mode, making it ideal for backup power and off-grid applications.
 

Multi-Battery Compatibility
* Supports Lead-Acid, Lithium (LiFePO4), Gel, and Water batteries with automatic voltage recognition (24V/48V DC).
* Advanced 3-stage charging (Constant Current, Constant Voltage, Float) ensures efficient and safe battery maintenance.

Clean & Stable Pure Sine Wave Output
* THD ≤ 3% - Provides utility-grade power quality, safe for sensitive electronics like laptops, medical devices, and audio
systems.

True UPS Functionality
* Ultra-fast transfer time: ≤15ms (grid to inverter)
* Ensures continuous operation for critical loads during power outages.

Comprehensive Protection & Safety
* Full protection: Overload, Short Circuit, Over/Under Voltage, Overheating, Reverse Polarity.
* Intelligent thermal management: Triple-fan cooling system activates at 45°C.
* Overheat protection at 90°C with auto-recovery at 60°C.

Real-Time Monitoring & Control
* Optional LCD and wireless remote control for real-time monitoring of:
* Input/Output Voltage, Power, Frequency
* Battery Status, Charging Current, Fault Codes (e.g., Overload, Short Circuit)
* Clear LED indicators for operational status: Green (normal), Red (fault/charging), Yellow (warning).

Compact & DIY-Friendly
* Dimensions: 380×215×77mm | Weight: 4.2kg
* Easy integration into custom enclosures or existing systems.
* Optional accessories: terminal blocks, self-recovering fuses, and a display module.

FAQ

1. What specifications and features do your inverter mainboards offer?
Our inverter mainboards are designed for high efficiency, durability, and compatibility with a wide range of inverter systems.
 

2. What certifications do your inverter mainboards have?
Our products meet international standards and are certified for safety and performance, including CE, RoHS, FCC, and ISO9001. Custom certifications can be arranged for specific markets upon request.

3. What is the minimum order quantity (MOQ) for wholesale purchases?
Our standard MOQ is 50 units, but we offer flexible terms for long-term partners. Volume discounts are available for larger orders.

4. What warranty do you provide?
All inverter mainboards come with a 1-year warranty against manufacturing defects. Damage due to improper installation or misuse is not covered.

5. Do you offer technical support for installation and troubleshooting?
Yes, we provide comprehensive technical documentation (installation guides, wiring diagrams) and 24/7 customer support via email or phone.

6. What is the lead time for bulk orders?
Standard orders typically ship within 15-20 business days. Customized or large-volume orders may require additional time. Expedited production is available for urgent requests.

7. Can you customize mainboards for unique requirements?
Yes, we offer OEM/ODM services, including firmware adjustments, interface modifications, or hardware upgrades. Please share your specifications, and we will provide a feasibility assessment and a quote.

8. How do I ensure optimal performance from the mainboard?
Use within specified voltage and temperature ranges. Follow installation guidelines strictly. Implement regular maintenance checks, dust removal, and connection inspections.
 

9. What payment terms do you accept?
We accept T/T (bank transfer), L/C (Letter of Credit), and online orders. A 50% deposit is required for order confirmation, with the balance due before shipment.

10. How can I place an order or request a quote?
Contact our sales team at TM. Provide your requirements (quantity, specifications, certifications), and we will respond within 24 hours with a formal quote.