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 the battery from being over-discharged.

Compact 18A PWM Solar Charge Controller for Optimal Energy Efficiency

Name: Compact 18A PWM Solar Charge Controller for Optimal Energy Efficiency
Brand: Zhongshan Juneng Jiu Technology Co.,Ltd
SKU: 1972651261

Guangdong, ChinaZhongshan Juneng Jiu Technology Co.,Ltd

US$4.00-6.00

800 Pieces

Product profile

Customization

Available

After-sales Service

1 Year

Warranty

1 Year

Model NO.

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: Includes 1-year warranty for mechanical defects and parts replacement.

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

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

Multi-Battery Compatibility: Supports Lead-acid, Lithium, and Gel battery types for versatile applications.

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

Customization Available: Offers customization options based on customer designs and samples.

100% Quality Inspection: Every finished product undergoes visual and functional inspection before shipping.

Flexible Payment Terms: Accepts LC, T/T, Western Union, PayPal, and Small-amount payment methods.

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: ≤2.12h

About Our Factory & Business Background

Address3rd Floor, 1st Elevator, Building E, No.66 Hesui Industrial Avenue, Dongfeng Town, Zhongshan, Guangdong, China

Plant Area1483 square meters

Number of Employees34

Registered Capital1,000,000 RMB

Terms of PaymentLC, T/T, Western Union, Small-amount payment, PayPal, D/P

International Commercial Terms(Incoterms)EXW, CFR, CIF, FOB

Average Lead TimePeak Season Lead Time: one month Off Season Lead Time: within 15 workdays

Minimum Order Quantity2000

Supply Chain Partners50

Our Production Capability & Technical Expertise

Main ProductsPower Inverter, Solar Charge Controller, Inverter, Solar Controller, Solar Inverter, Solar Power Inverter, Car Inverter, Car Power Inverter, Solar Panel Inverter, Charger Controller

Production Lines3

Production MachinesWave Soldering Machine, Ultrasonic Machine, Aging Line, Packing Machine, Marking Machine

QA/QC inspectors2 people

Inspection Type for Finished Products100% inspection(Visual inspection & Function inspection)

Inspection Method for Finished ProductsHave instruction but no written records

R&D Engineers2 people

Traceability of Raw MaterialsYes

Our Industry Experience & Global Business Record

Year of Establishment2019-10-16

Main MarketsDomestic

Repeat Buyers Choice80%~100%

Number of Foreign Trading Staff3

Overseas Agent/BranchNo

New Products Launched in Last yearYes

Our Certifications, Standards & Industry Recognition

Product CertificationCE, RoHS

Cooperated with Fortune 500No

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 to prevent overcharging, discharge protection to prevent over-discharging, load control for connected devices, and system monitoring for voltage, current, and capacity.

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

PWM controllers directly reduce voltage with lower efficiency, suitable for small systems. MPPT controllers maximize power output with 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 (LFP, ternary), and Gel batteries. Users must confirm compatibility with their specific battery type.

Q:Does a solar controller have overload protection?

Yes, most solar controllers feature overload protection that automatically cuts off output when load current exceeds the rated value to protect the system.