What is the Minimum Order Quantity (MOQ)?

The Minimum Order Quantity is 2000 units.

What are the lead times for production?

The peak season lead time is one month, while the off-season lead time is within 15 workdays.

High-Efficiency PWM Solar Charge Controller for 12V/24V Systems

Name: High-Efficiency PWM Solar Charge Controller for 12V/24V Systems
Brand: Zhongshan Juneng Jiu Technology Co.,Ltd
SKU: 2186964715

Guangdong, ChinaZhongshan Juneng Jiu Technology Co.,Ltd

US$4.00-10.00

800 Pieces

Product profile

Customization

Available

Condition

New

Certification

ISO, CE

Model NO.

MG21L

Application

Solar System Controller

Rated Voltage

12V/24V

Transport Package

Box

Specification

18.5*11.7*5cm

Trademark

Junengjiu

Origin

Zhongshan, China

Production Capacity

50000

Key features

High-Efficiency PWM Technology: Optimizes solar energy system efficiency and extends battery life.

Dual Voltage Compatibility: Supports both 12V and 24V systems for versatile application.

Comprehensive Protection: Prevents overcharging, over-discharging, and includes overload protection.

Multi-Battery Support: Compatible with Lead-acid, Lithium, and Gel batteries.

Certified Quality: Meets ISO and CE standards for safety and reliability.

Customization Available: ODM service available with customization from designs and samples.

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: ≤3.93h

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 transmission 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 controllers directly reduce panel voltage to battery voltage with lower efficiency, suitable for small-scale systems. MPPT controllers dynamically adjust the operating point to maximize output power, offering higher efficiency for high-power or low-temperature systems.

Q:What types of batteries are supported?

Most solar controllers support multiple battery types, including lead-acid (sealed/open), lithium (lithium iron phosphate/ternary), and gel batteries.

Q:Does the controller have overload protection?

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

Q:How does the controller work at night?

At night, the controller stops charging and manages the battery's discharge to the load according to settings, preventing the battery from being over-discharged.