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Factory Price CONGSIN 12V/24V 20A Solar Charge Controller
US$10.24
20-99 Pieces
US$8.85
100-199 Pieces
US$7.94
200+ Pieces
Sample price:US$10.24/piece.Request sample
Product profile
Customization
AvailableAfter-sales Service
12 MonthsWarranty
12 MonthsModel NO.
CSB-20AUSBCondition
NewCertification
CEApplication
Water Heater Controller, Solar System Controller, Charger Controller, Lighting Controller, Wind Controller, Solar Working Station, Voltage ControllerRated Voltage
12VInput Voltage
12V/24VColor
YellowUSB Ports
4pcsCharging Current
10ATransport Package
Carton BoxSpecification
168*92*41.5mmTrademark
CONGSINOrigin
Guangzhou ChinaHS Code
8504409940Production Capacity
999 Pieces/MonthsKey features
12V/24V Auto Recognition: Automatically identifies system voltage for versatile solar applications.
High Efficiency PWM Charging: Intelligent 3-stage PWM charging optimizes battery life and performance.
Comprehensive Protection: Features over-voltage, short circuit, reverse connection, and temperature compensation.
Smart LCD Display: Humanized LCD interface with double button operation for easy data setup.
Data Recording Function: Records total run time, error timers, and full charge cycles for monitoring.
Flexible Load Control: Selectable load control modes with resettable timer function for street lights.
RS485 Communication: Optional RS485 interface allows for advanced system integration and monitoring.
12 Months Warranty: Backed by a 12-month warranty and after-sales service for peace of mind.
Company profile

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service AvailableExport Year: 2001-04-01 CertifiedNearest Port: Guangzhou Port, Shenzhen PortAverage Response Time: ≤18h CertifiedTerms of Payment: LC, T/T, PayPal, etc.
AI-Powered supplier vetting
SummaryGuangzhou Congsin Electronic Technology Co., Ltd is a China-based limited company established in 2021 with 54 employees and a 925 m² manufacturing site in Guangdong. It operates four production lines, has 11–20 quality-control staff, and produces power inverters, solar charge controllers, and related products. The supplier states that it exports to more than 40 countries and that exports represent 90% of total sales. It reports OEM/ODM capability, two years of R&D engineer experience, automatic wave soldering and multifunction testing equipment, and a one-year warranty for power inverters. However, no supplier-management-system certifications are listed. The provided information supports production, export, customization, and after-sales claims, while financial credibility and customer-case strength remain insufficiently evidenced. Reported output figures contain inconsistent entries, so production scale should be verified before reliance.
Supplier typeThe supplier is identified as Guangzhou Congsin Electronic Technology Co., Ltd., a China-based limited company established in 2021. It reports a 925 m² manufacturing plant, four production lines, and business activities spanning manufacturing, electrical and electronic products, and consumer electronics, supporting classification as a manufacturer rather than only a trading intermediary.
CertificationsThe supplier-management-system certification field is explicitly recorded as NIL. No certification evidence is provided in the available information, indicating a documented gap for this field.
After-Sales capabilityThe supplier explicitly describes itself as a reliable power-inverter supplier offering a one-year warranty. This is direct evidence of a defined warranty-based after-sales commitment, although no further service-process or response-time details are provided.
R&D capabilityThe supplier reports an R&D department, professional engineer support, OEM/ODM project capability, automatic wave soldering machines, and multifunction testing machines. However, only two years of total R&D engineer experience is stated, and no patents, proprietary technologies, or product-development results are provided.
Production capacityThe supplier reports four production lines, 11–20 quality-control staff, product-specific output information, and fulfillment within 15 working days in both off-peak and peak seasons. The output data contains inconsistent and unusually large entries, so production capacity is supported in principle but requires verification.
Customization capabilityThe supplier explicitly states that its R&D department supports OEM and ODM projects and that it has professional engineer support. Its stated export experience across more than 40 countries further indicates experience serving varied markets, although specific customization examples are not provided.
Product Q&A
Q:What is the maximum charge and discharge current?
A:
The controller supports a maximum charge current of 20A and a maximum discharge current of 20A.
Q:Does the controller support automatic voltage recognition?
A:
Yes, it features an automatic identification system for 12V and 24V systems.
Q:What protections are included in this solar charge controller?
A:
It includes over-voltage, short circuit, over-load, over-charge, over-discharge, reverse connection, and accurate temperature compensation protections.
Q:Is RS485 communication interface included?
A:
The RS485 communication interface is optional and may not be included by default.
Q:What is the warranty period for this product?
A:
The product comes with a 12-month warranty and after-sales service.
Send Inquiry
*To:
Guangzhou Congsin Electronic Technology Co., Ltd
Guangzhou Congsin Electronic Technology Co., Ltd*Content:
Supplier replies will be sent to your registered email
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