How does the controller work at night?

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

What is the minimum order quantity?

The Minimum Order Quantity (MOQ) is 2000 units.

What are the payment terms?

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

Premium Junengjiu PWM Solar Controller for Efficient Energy Management

Name: Premium Junengjiu PWM Solar Controller for Efficient Energy Management
Brand: Zhongshan Juneng Jiu Technology Co.,Ltd
SKU: 1976671541

Guangdong, ChinaZhongshan Juneng Jiu Technology Co.,Ltd

US$10.00-11.00

800 Pieces

Product profile

Customization

Available

After-sales Service

1 Year

Warranty

1 Year

Model NO.

SY48100

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

1-Year Warranty Coverage: Comprehensive 1-year warranty provided for all units to ensure product reliability.

CE and ISO Certified: Product holds CE and ISO certifications ensuring compliance with international standards.

Dual Voltage Support: Compatible with both 12V and 24V systems for flexible solar energy management.

Overload Protection: Automatically cuts off output when load current exceeds rated values to protect the system.

Multi-Battery Compatibility: Supports lead-acid, lithium, and gel batteries for versatile energy storage solutions.

Nighttime Discharge Control: Manages battery discharge to loads at night while preventing over-discharging.

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: ≤3.82h

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 the warranty period?

We provide a 1-year warranty for this solar controller.

Q:What certifications does the product have?

The product is certified with ISO and CE standards.

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 for maximum power, offering higher efficiency for high-power or low-temperature systems.

Q:Which battery types are supported?

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

Q:Does the controller have overload protection?

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