How is the charging controlled?

It uses a PWM 3-stage charging mode (bulk, absorption, float) with temperature compensation.

20A LCD PWM Solar Charge Controller with USB

Name: 12V/24V DC 10A/20A LCD PWM Solar Charge Controller with USB
Brand: NINGBO KEMAPOWER ELECTRONICS CO., LTD.
SKU: 864150215

Zhejiang, ChinaNINGBO KEMAPOWER ELECTRONICS CO., LTD.

US$5.00-9.00

1 Piece

Product profile

Customization

Available

After-sales Service

1 Year

Warranty

1 Year

Model NO.

HHDU

Condition

New

Certification

ISO, CB, CE

Application

Collector Controller, Water Heater Controller, Solar System Controller, Charger Controller, Lighting Controller, Wind Controller, Solar Working Station, Voltage Controller, Thermal Controller

Rated Voltage

12V

Product Name

LED 12VDC 24VDC 20AMP PWM Solar Charge Convertor

Transport Package

Safety Packing

Specification

119*64*26mm

Trademark

KEMAPOWER

Origin

Foshan, China

HS Code

9032899090

Production Capacity

50000PCS/Yer

Key features

Auto Voltage Detection: Automatically detects and switches between 12V and 24V systems for versatile use.

Multi-Battery Compatibility: Supports AGM, GEL, Flooded, and various Lithium battery configurations.

Comprehensive Protection: Features overload, short circuit, reverse polarity, and over-voltage protection.

USB Charging Port: Integrated 5V/2A USB charger for convenient device charging.

Temperature Compensation: 3-stage charging with temperature compensation for optimal battery health.

LCD Display & Control: Clear LCD shows status, fault codes, and allows light/time control modes.

Adjustable Parameters: Low voltage disconnect/reconnect and charging voltages are adjustable.

Company profile

NINGBO KEMAPOWER ELECTRONICS CO., LTD.

Zhejiang, China

Business Type: Manufacturer/Factory, Trading CompanyExport Year: 2007-03-05Nearest Port: Ningbo, ChinaAverage Response Time: ≤8.86hTerms of Payment: LC, T/T, Western UnionInternational Commercial Terms(Incoterms): FOB, EXW, CFR, CIF

AI-Powered supplier vetting

SummaryThe supplier is identified as a Ningbo-based trading company associated with wholesale and retail, while other records describe factory facilities including five production lines, six to ten quality-control staff, and exports to Southeast Asia, the Middle East, and North America. It reports CE or UL certification for most products, annual customer training, 24/7 online technical service, after-sales support, OEM/ODM services, and new product development. However, formal procedures and records for supplier service assessment, corrective actions, and complaint handling are absent. The supplier has no overseas warehouse, showroom, agent, or branch, and no SDK availability. Sustainability documentation and fire-drill status are unknown. Financial credibility cannot be assessed from the provided year labels alone.

CertificationsThe supplier states that most products have passed CE or UL certification, while its supplier-management-system certification is recorded as “Others.” The evidence supports product-level certification claims but does not identify a specific management-system certificate or coverage for all products.

After-Sales capabilityThe supplier advertises reliable after-sales guarantees, annual customer help and training, 24/7 online technical service, and stated peak/off-season lead times. Nevertheless, it has no written procedures or records for complaint handling, service-capability assessment, or corrective and preventive actions, which is an explicit process deficiency.

R&D capabilityThe supplier reports new-product development during the past year and provides ODM services, demonstrating product-development and design-manufacturing capability. It also reports no available SDK, so software-development support is not evidenced.

Production capacityThe supplier reports five production lines, six to ten quality-control staff, Ningbo factory-related location information, and lead times of within 15 working days off-season and one month during peak season. These details support established production operations, although annual output data is excluded from this assessment because it is monetary information.

Customization capabilityThe supplier explicitly offers customized products, low MOQ service, ODM services, and OEM services for well-known brands. This is direct evidence of both product customization and contract manufacturing capability.