How does a solar controller work at night?

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

High-Performance 20A Solar Charge Controller for Energy Optimization

Name: High-Performance 20A Solar Charge Controller for Energy Optimization
Brand: Zhongshan Juneng Jiu Technology Co.,Ltd
SKU: 2287109785

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

Comprehensive Warranty: Includes 1-year warranty and after-sales service coverage.

Dual Voltage Support: Rated voltage supports both 12V and 24V systems.

Multiple Battery Compatibility: Supports Lead-acid, Lithium, and Gel battery types.

Overload Protection: Automatically cuts off output when load current exceeds rated value.

Nighttime Discharge Management: Stops charging at night and manages battery discharge to prevent over-discharge.

High-Efficiency MPPT Option: MPPT controllers maximize power output and suit high-power or low-temp environments.

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

ISO and CE Certified: Product meets ISO and CE certification standards for quality and safety.

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 transmission between solar panels and batteries, preventing overcharging or over-discharging to extend battery life and optimize system efficiency.

Q:What is the role of a solar controller?

It performs charging management, discharge protection, load control, and system monitoring of voltage, current, and battery capacity.

Q:What is the difference between a PWM controller and an MPPT controller?

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

Q:What types of batteries can a solar controller be used with?

Most controllers support Lead-acid (sealed/open), Lithium (lithium iron phosphate, ternary lithium), and Gel batteries.

Q:Does a solar controller have overload protection?

Yes, most solar controllers automatically cut off output when load current exceeds the rated value to protect the system.