Why is the charging time increased when I used the foldable solar charger behind windows?

Some windows might have been tinted with solar film that black infrared/UV light. This will reduce the solar cell efficiency, hence increased the charging time.

Can I charge my devices in Cloudy day?

Yes, it is ok to charging devices in cloudy day. But the charging efficiency will be lower down .and the charging time will be prolonged.

Can I charge my devices in home lighting?

No, The solar foldable charger can not charging devices under home lighting.

Waterproof Two Foldable Portable Source Solar Mobile Phone Power Bank Wireless

Name: Waterproof Two Foldable Portable Source Solar Mobile Phone Power Bank Wireless
Brand: Shenzhen Just-Solar Co., Ltd.
SKU: 734489792

Guangdong, ChinaShenzhen Just-Solar Co., Ltd.

US$8.90

50-99 Pieces

US$8.50

100-999 Pieces

US$8.10

1,000-4,999 Pieces

US$7.70

5,000-9,999 Pieces

US$7.30

10,000+ Pieces

Product profile

Customization

Available

Compatible Brand

All Mobile Phones and Power Banks

Type

Portable and Wireless

Model NO.

JT-HY1608A

Power Source

Solar and Electricity

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

3W, 5V/600mA, Foldable

0-100% Energy Charging Time

AC-4 Hours;Solar-12hours

Lithium Battery

Samsung/Panasonic/Byd 3.7V/12000mAh

USB Input

5V/2.4A; or/and 5V3a(Type C)

Output

5V/2.4A; or/and 5V3a(Type C)

LED Light Power

1.5W Back LED Lighting

LED Energy Indicator

5 LEDs for Energy Class

Crust Material

ABS, Cow Skin, Flame Retardant Plastic

Product Color Optional

All Colors

Close/Open Size

155*82*19 mm;155*175*16mm

Weight

330g

Transport Package

Color Box

Specification

40pcs/carton

Trademark

Just or OEM

Origin

Shenzhen

HS Code

9405409000

Production Capacity

10000PCS/Month

Key features

Foldable Solar Design: Compact 155x82x19mm folded size expands to 155x175x16mm for efficient solar charging.

Dual Charging Sources: Charges via solar power in sunlight or AC power via USB/Type-C input.

Customizable Colors: Product color is optional with black, yellow, green, and blue options available.

Built-in LED Light: Features 1.5W back LED lighting with 5 LED energy indicators.

Multiple Output Ports: Supports USB and Type-C outputs with QC 3.0 and 5V/2.4A or 5V/3A options.

Comprehensive Protection: Includes anti-overcharge, anti-discharge, anti-over-current, and anti-explosion safety.

OEM & ODM Services: Custom logo printing and design services available for bulk orders.

Company profile

Shenzhen Just-Solar Co., Ltd.

Guangdong, China

Business Type: Manufacturer/FactoryExport Year: 2004-05-05Nearest Port: SHEN ZHENAverage Response Time: ≤9.84hTerms 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?

1 Open the foldable solar charger and spread them to direct sunshine. 2 Connect foldable solar charger with mobile phone or power bank etc. through the cable, The folding solar charger will be charging devices automatically.

Q:Is this product waterproof?

The folding solar charger is weather resistant which means it will resist the occasional rain or snowed, it is not design for immersion in water.

Q:What's devices can charged with this solar charger?

The foldable solar panel output is 5V. So it is can charge Cell phone, MP3 players, Tablets, Some of Digital Cameras, etc. other's 5V device.

Q:How long does it take to fully charge battery pack or mobile phone from empty using?

The charging time will be difference based on foldable solar charger power, Sunshine and power bank or mobile phone capacity etc. Generally speaking, for 13W solar charger, under clear sunny days, charging 6 time is around 2 -3 hours, the charging time similar to AC charger.

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

You should ensure the solar charger is outside in direct sunlight and that the solar panel is in no way shaded. For best performance, the solar panel should be perpendicular to the sun.