Can I charge my devices on a cloudy day?

Yes, it is possible to charge devices on a cloudy day. However, the charging efficiency will be lower, and the charging time will be prolonged.

Can I charge my devices under home lighting?

No, the solar foldable charger cannot charge devices under home lighting.

Solar USB Best Charger Foldable Mobile Phone Battery Pack Power Bank

Name: Solar USB Best Charger Foldable Mobile Phone Battery Pack Power Bank
Brand: Shenzhen Just-Solar Co., Ltd.
SKU: 711780042

Guangdong, ChinaShenzhen Just-Solar Co., Ltd.

US$6.00

100-499 Pieces

US$5.50

500-999 Pieces

US$5.00

1,000-4,999 Pieces

US$4.50

5,000-9,999 Pieces

US$4.00

10,000+ Pieces

Sample price:US$8.00/piece.Request sample

Product profile

Customization

Available

Compatible Brand

All Brand

Type

Portable

Model NO.

JT-ES900

Power Source

Solar

Quick Charging Function

With Quick Charging Function

Charger Cable Length

10 to 14.9 Feet

Over-Current Protection

With Over-Current Protection

Display

With Display

Color

Optional

Socket Type

USB

Customized

Solar Panel Input

5V/200mA

USB Input

5V/2.0A (AC Power or Exteral Solar Panel)

Battery

Polymer Lithium Battery 3.7V/12000mAh

Double USB Output

5V*1A and 5V*2.0A

1W LED Lights

(Back Side of The Product): Flashlight, Sos Flashi

Crust Material

Black/Yellow/Green/Blue/Yellow

Product Size

142*75*17 mm

Product Weight

180g

Warranty

2 Years for All of Our Solar Mobile Power Items

Transport Package

Color Box

Specification

50pcs/carton

Trademark

JUST

Origin

Shenzhen

HS Code

94054090

Production Capacity

10000PCS/Month

Key features

12000mAh Large Capacity: Built-in polymer lithium battery providing ample power for multiple device charges.

Dual Charging Methods: Supports charging via AC power USB input or direct solar power under sunlight.

Multi-Function LED Light: Features 1W LED with flashlight and SOS flashing modes for emergency use.

Built-in Phone Stand: Integrated mobile phone stand function for convenient hands-free charging.

Fast Charging Support: USB 2 port supports 2.0A output for fast charging compatible devices.

Comprehensive Safety: Equipped with anti-overcharge, anti-discharge, over-current, and explosion protection.

Certified Quality: Products are RoHS, CE, and FCC certified ensuring safety and compliance.

Customizable Options: Offers OEM services with custom logo printing and various color choices.

Company profile

Shenzhen Just-Solar Co., Ltd.

Guangdong, China

Business Type: Manufacturer/FactoryExport Year: 2004-05-05Nearest Port: SHEN ZHENAverage Response Time: ≤9.03hTerms 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.

Product Q&A

Q:How to use the product?

Open the foldable solar charger and spread it to direct sunshine. Connect the charger with your mobile phone or power bank through the cable. The folding solar charger will charge devices automatically.

Q:Is this product waterproof?

The folding solar charger is weather resistant, meaning it can resist occasional rain or snow. However, it is not designed for immersion in water.

Q:What devices can be charged with this solar charger?

The foldable solar panel output is 5V, so it can charge cell phones, MP3 players, tablets, some digital cameras, and other 5V devices.

Q:How long can I get best performance from the foldable solar panel?

Ensure the solar charger is outside in direct sunlight and the panel is not shaded. For best performance, the solar panel should be perpendicular to the sun.

Q:Why is the charging time increased when used behind windows?

Some windows may have tinted solar film that blocks infrared/UV light. This reduces solar cell efficiency, thereby increasing the charging time.