What are the main functions of the controller?

Functions include charging management, discharge protection, load control, and system monitoring for voltage, current, and battery capacity.

What is the warranty period?

The product comes with a 1-year warranty.

Is customization available?

Yes, customization is available from both designs and samples.

High-Efficiency MPPT Solar Charge Controller for off-Grid Use

Name: High-Efficiency MPPT Solar Charge Controller for off-Grid Use
Brand: Zhongshan Juneng Jiu Technology Co.,Ltd
SKU: 1974748311

Guangdong, ChinaZhongshan Juneng Jiu Technology Co.,Ltd

US$13.50-36.50

500 Pieces

Product profile

Customization

Available

After-sales Service

1 Year

Warranty

1 Year

Model NO.

SKA

Condition

New

Certification

ISO, CE

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 MPPT Technology: Dynamically adjusts operating point to maximize solar panel output power.

Comprehensive Battery Protection: Prevents overcharging, over-discharging, and overload to extend battery life.

Multi-Battery Type Support: Compatible with Lead-acid, Lithium, and Gel battery types.

1-Year Warranty Coverage: Includes 1-year warranty for mechanical defects and parts.

ISO and CE Certified: Meets international safety and quality standards for reliability.

Flexible Customization Options: Supports customization from both designs and samples.

Dual Voltage Compatibility: Automatically supports 12V and 24V system configurations.

100% Finished Product Inspection: Every unit undergoes visual and functional inspection before shipping.

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: ≤1.83h

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. It prevents overcharging or over-discharging, extends battery life, and optimizes system efficiency.

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

PWM controllers reduce voltage directly with lower efficiency, suitable for small systems. MPPT controllers dynamically adjust the operating point for higher efficiency, ideal for high-power or low-temperature systems.

Q:What types of batteries can be used?

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

Q:Does the controller 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 the controller work at night?

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