What is the minimum order quantity?

The minimum order quantity is 2000 units.

What are the payment terms?

Payment terms include LC, T/T, Western Union, Small-amount payment, PayPal, and D/P.

What is the lead time for production?

Peak season lead time is one month, while off-season lead time is within 15 workdays.

Smart 20A Solar Charge Controller for Efficient Energy Use

Name: Smart 20A Solar Charge Controller for Efficient Energy Use
Brand: Zhongshan Juneng Jiu Technology Co.,Ltd
SKU: 2204326545

Guangdong, ChinaZhongshan Juneng Jiu Technology Co.,Ltd

US$6.00-7.00

800 Pieces

Product profile

Customization

Available

After-sales Service

1 Year

Warranty

Model NO.

Condition

New

Certification

ISO, CE

Application

Solar System Controller

Rated Voltage

12V/24V

Carton Size

53.5*38*30.5cm

Innerbox Size

18*10*5.5cm(Per PC)

Brand

Junengjiu

Origin1

Zhongshan/China

Transport Package

Box

Specification

18*10*5.5cm(per pc)

Trademark

Junengjiu

Origin

Zhongshan, China

HS Code

8504403090

Production Capacity

50000

Key features

20A High Current Capacity: Supports 20A current with USB output for efficient energy management in solar systems.

Dual Voltage Compatibility: Works with both 12V and 24V systems, suitable for various solar panel configurations.

Comprehensive Protection: Features overload protection, overcharge prevention, and over-discharge protection.

Multi-Battery Support: Compatible with lead-acid, lithium, gel, and other battery types for versatile use.

Certified Quality: CE and ISO certified, ensuring safety and reliability for global markets.

Custom Branding Available: Offers customization options including brand logo and packaging design.

Compact Packaging: Inner box size 18*10*5.5cm, carton size 53.5*38*30.5cm for easy shipping.

1-Year Warranty: Provides a 1-year warranty for peace of mind and after-sales support.

Company profile

Product CertificationQuality AssuranceExhibition ExperienceFast Delivery

Zhongshan Juneng Jiu Technology Co.,Ltd

Guangdong, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs CertifiedExport Year: 1 Year CertifiedNearest Port: Zhongshan PortAverage Response Time: ≤2.29h

AI-Powered supplier vetting

SummaryThe supplier is identified as a combined company and a trade company located in Zhongshan, with associated companies in manufacturing. It reports CE and RoHS certifications, customization from designs and samples, ODM services, and new product development during the past year. Production resources include three production lines and several listed machines, but the supplier does not continuously reconcile production quantities for each batch. Service procedures exist for supplier assessment, corrective actions, and complaint handling, yet no written records were provided. Overseas service infrastructure is limited: no overseas warehouse, showroom, agents, or branches, and no overseas service countries were reported. Financial records are referenced for 2022–2024, but no financial performance details are provided. No available SDK, no factory environmental impact assessment report, and no OEM service for popular brands were reported.

CertificationsThe supplier reports CE and RoHS certifications. These are explicit product or compliance certifications and provide positive evidence for this field.

After-Sales capabilityThe supplier has procedures for complaint handling, corrective and preventive actions, and service-capability assessment, but no written records are available. It has no overseas warehouse, showroom, agents, or branches, and reports service availability in zero overseas countries, limiting demonstrated after-sales coverage.

R&D capabilityThe supplier reports new products during the past year and provides ODM services, demonstrating some product-development capability. However, it explicitly reports no available SDK, so the evidence does not support a fully strong innovation capability across the requested scope.

Production capacityThe supplier lists multiple production-related facilities or equipment and reports three production lines. However, it does not continuously reconcile quantities for each batch or bulk production, which is an explicit production-control deficiency.

Customization capabilityThe supplier explicitly supports customization from designs and samples and provides ODM services. These capabilities directly demonstrate design-based and sample-based customization.

Product Q&A

Q:What is a solar controller?

A solar controller manages electrical energy between solar panels and batteries, preventing overcharging or over-discharging to extend battery life and optimize system efficiency.

Q:What is the difference between PWM and MPPT controllers?

PWM reduces panel voltage to battery voltage with lower efficiency, suitable for small systems. MPPT dynamically adjusts to maximize power output, offering higher efficiency for high-power or low-temperature systems.

Q:What types of batteries are supported?

Most solar controllers support lead-acid (sealed/open), lithium (lithium iron phosphate, ternary), and gel batteries. Confirm compatibility with your specific battery type.

Q:Does it have overload protection?

Yes, most solar controllers include overload protection. If load current exceeds the rated value, the controller automatically cuts off output to protect the system.

Q:How does it work at night?

At night, the controller stops charging and manages battery discharge to loads according to settings, preventing over-discharge.