What is the lead time for orders?

During peak season, the lead time is one month; during off-season, it is within 15 working days.

What is the error rate for the controller?

The controller maintains a high precision with an error rate of only 2%.

How do I connect the solar panel and battery?

Connect the solar panel to the first two terminals, battery to the third and fourth, and load to the fifth and sixth terminals as indicated on the top cover.

MPPT Solar Controller 12V 24V 15A 20A Solar Power Energy Panel Battery System DC Charger Controller

Name: MPPT Solar Controller 12V 24V 15A 20A Solar Power Energy Panel Battery System DC Charger Controller
Brand: Shenzhen Just-Solar Co., Ltd.
SKU: 752323002

Guangdong, ChinaShenzhen Just-Solar Co., Ltd.

US$56.00

10-499 Pieces

US$54.00

500-999 Pieces

US$52.00

1,000-4,999 Pieces

US$48.00

5,000-9,999 Pieces

US$44.00

10,000+ Pieces

Sample price:US$60.00/piece.Request sample

Product profile

Customization

Available

Condition

New

Application

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

Model NO.

JS-WI-2415; JS-WI-2420

Rated Voltage

12V 24V

Input Voltage

16V-40VDC

Output

DC12V/24V 15A 20A

Battery Protection

Charging and Discharging

Charging Status

LED Indication

Work Method

MPPT

Warranty

3 Years

Life-Time

More Than 8 Years

Transport Package

Color Box

Specification

CE, ROHS

Trademark

JUST

Origin

Shenzhen

HS Code

853710909

Production Capacity

10000PCS/Month

Key features

High Charging Efficiency: MPPT technology ensures over 95% charging efficiency for optimal power conversion.

Comprehensive Battery Protection: Features over-charge, over-discharge cut-off, resume, and short-circuit protection.

Adjustable Parameters: Charge and discharge parameters are fully adjustable to meet specific system needs.

Smart Control Functions: Includes time control, light control, and cumulative data tracking for intelligent management.

Durable Construction: Flame retardant PCB with high-quality components manufactured and tested in-house.

Wide Input Voltage Range: Accepts input voltage from 16V to 40V DC, suitable for various solar panel configurations.

External Temperature Compensation: Automatically adjusts charging parameters based on external temperature for safety.

Clear Status Indication: Equipped with LED indicators for charging status, battery energy, and load output.

Company profile

Shenzhen Just-Solar Co., Ltd.

Guangdong, China

Business Type: Manufacturer/FactoryExport Year: 2004-05-05Nearest Port: SHEN ZHENAverage Response Time: ≤8.69hTerms of Payment: LC, T/T, PayPal, etc.International Commercial Terms(Incoterms): FOB, CFR, CIF, FAS, DDP, FCA, EXW

AI-Powered supplier vetting

SummaryShenzhen Just-Solar Co., Ltd. is identified as a China-based manufacturer/factory operating in Guangdong, with separate production entities described for domestic and overseas business. The supplier reports multiple management-system certifications, 50 quality-control staff, more than 10 production lines, extensive solar-product output, export activity since 2004, and sales coverage across multiple global regions. It states that it provides product design, R&D, manufacturing, shipment arrangement, warranties, after-sales service, and market suggestions. The available information supports strengths in manufacturing scale, export experience, product development, customization, and stated service capabilities. However, financial credibility cannot be assessed because relevant financial information is excluded, and the representative-title record is invalid or unusable.

Supplier typeThe supplier is explicitly classified as a Manufacturer/Factory, with production locations in Shenzhen, Guangdong, China. Its descriptions identify separate production entities for domestic and overseas business, supporting direct manufacturing involvement rather than a purely trading profile.

CertificationsThe supplier lists BSCI, ISO 9000, ISO 9001, ISO 14001, ISO 14000, HSE, GMP, EICC, and QC 080000 as supplier-management-system certifications. The slice does not provide certificate numbers, validity dates, issuing bodies, or scopes, so the assessment is based on the stated holdings only.

After-Sales capabilityThe supplier explicitly states that it provides a warranty period for each product, after-sale service, and reasonable suggestions for solar products and markets. It also describes support across the full shipment process, indicating a stated service capability beyond production.

R&D capabilityThe supplier states that it designs, researches, develops, and manufactures solar products according to customer requirements, and reports total R&D-engineer experience of 31–40 years. These statements support product-development capability, although they do not quantify patents, laboratories, or new-product launches.

Production capacityThe supplier is identified as a factory and reports more than 10 production lines, 50 quality-control staff, and substantial stated output for solar systems, panels, chargers, and lights. It also lists a broad solar-product portfolio and export coverage across multiple regions, supporting significant production breadth and capacity.

Customization capabilityThe supplier explicitly states that it designs, researches, develops, and manufactures solar products according to customer requirements and supplies products in customers' quality classes. This directly supports customization in product design and quality specifications.

Client casesThe supplier lists Shell, Geodrill, Newmont, Tullow, and Heineken as main customers. These named customer references provide explicit evidence of customer cases, although the slices do not include project details, transaction scope, or verification documentation.