What are the main functions of a solar controller?

Main functions include charging management, discharge protection, load control, and system monitoring (displaying voltage, current, and capacity).

What are the payment terms?

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

What is the minimum order quantity?

The Minimum Order Quantity (MOQ) is 2000 units.

Junengjiu Solar Charge Controller - Compact and Durable Design

Name: Junengjiu Solar Charge Controller - Compact and Durable Design
Brand: Zhongshan Juneng Jiu Technology Co.,Ltd
SKU: 2264781625

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.

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

Dual Voltage Support: Compatible with 12V and 24V solar systems for versatile application.

MPPT Efficiency Option: MPPT controllers maximize output power, ideal for high-power or low-temp systems.

Multi-Battery Compatibility: Supports Lead-acid, Lithium (LiFePO4, Ternary), and Gel battery types.

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

OEM/ODM Customization: Customization available from designs and samples for tailored solutions.

CE & RoHS Certified: Products meet CE and RoHS safety and environmental standards.

Smart Load Control: Manages power supply to loads and prevents over-discharge at night.

System Monitoring: Displays and monitors voltage, current, and battery capacity data.

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: ≤1.63h

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/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 output power, offering higher efficiency for high-power or low-temperature environments.

Q:What types of batteries are supported?

Most controllers support Lead-acid (sealed/open), Lithium (LiFePO4, 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 based on settings, preventing the battery from being over-discharged.