The 28W Portable 24V Solar Charger Panel is a lightweight, foldable solution featuring high-efficiency N-type monocrystalline cells with a 23.5% conversion rate, delivering stable 24V/1.2A peak power output for portable power stations and compatible devices. Designed for outdoor use, it offers IP68-rated durability via its integrated lamination process, an ultra-compact form factor, and reliable low-light performance. It is ideal for camping, hiking, RV trips, and emergency power needs, with full international certifications (CE/UL/TUV/ISO/IEC) and flexible customization options (interface, logo, packaging) available for bulk orders.

Core Product Advantages

Superior Performance: N-type monocrystalline cells with 23.5% efficiency and great low-light performance. IP68 waterproof & dustproof for long outdoor use.
Stable 24V Output: 1.2A peak current, ideal for portable power stations and compatible devices.
Reliable Quality & Full Certifications: Made by an 18-year experienced manufacturer. CE, UL, TUV and ISO/IEC certified for global sales.
Stable Supply & Cost-Efficiency: Global factories and 5 overseas warehouses guarantee on-time delivery, faster logistics and favorable tariffs.
Flexible Customization: OEM & ODM available for interfaces, logos and packaging.
Trusted Reputation: Exported to 60+ countries with high repurchase rate, recognized by top outdoor brands.

The 28W Portable Solar Charger Panel (GT-A-28W / GT-FD28-UL-LM) is a high-efficiency monocrystalline solar panel designed for B2B wholesale and OEM customization. With 28W max power, 24V output, and IP68 waterproof rating, it is ideal for distributors and outdoor gear brands.

Package Includes

1 × 21W Portable Solar Panel
1 × User Manual

Product & Packaging Specs

Model: GT-FD28-UL-LM
Special Feature: Portable & Foldable
Material Type: N-type Monocrystalline Silicon, ETFE
Low-light performance: Excellent low-light adaptability
Application Class: Class II
Efficiency: 23.5% high conversion rate
Bending radius: ≥25 cm (static) / ≥9.84 inches (static)
Product Dimensions: 640 × 800 × 3 mm
Output: 24V, 1.2A peak current
Protection Rating: IP68 Waterproof & Dustproof

Product Specifications

Item	Parameter	Item	Parameter
Model	GT-A-28W	Maximum Power (Pmax)	28W
Peak Voltage (Vmp)	24V	Peak Current (Imp)	1.2A
Open-circuit Voltage (Voc)	28.8V	Short-circuit Current (Isc)	1.4A
Conversion Efficiency	23.5%	Cell Type	N-type Monocrystalline Silicon
Dimensions	640 × 800 × 3 mm	Weight	1 kg

Frequently Asked Questions (FAQs)

What are the core specifications of this 28W portable solar panel?

Our 28W foldable solar panel features N-type monocrystalline cells with 23.5% conversion efficiency, a 24V/1.2A peak output, and IP68 waterproof rating. The panel weighs 1kg with a 640×800×3mm unfolded size, and operates reliably from -25℃ to 65℃.

Can we customize the panel’s connectors, logo, or packaging for our brand?

Yes, full OEM/ODM customization is available. We support custom USB/Type-C interfaces, silk-screened logos, and branded packaging to align with your product line and market positioning.

What certifications does this solar panel have for global distribution?

The panel is certified with CE, UL, TUV, UKCA, and ISO 9001/14001/45001, meeting major safety and quality standards for North America, Europe, and other regions, ensuring smooth customs clearance.

What is the MOQ for wholesale orders, and do you offer flexible order terms?

We offer flexible MOQ to support both small test orders and large bulk shipments. Contact our sales team for tiered pricing and MOQ details based on your order volume.

What is your lead time for bulk orders, and how do you handle shipping?

Standard lead time is 7-15 working days for confirmed orders. We support EXW/FOB/CIF terms, with access to 5 overseas warehouses for fast logistics and favorable tariffs in major markets.

How do you ensure the quality and consistency of large-volume shipments?

Every panel undergoes 100% electrical and waterproof testing before shipment. Our ISO-certified production process ensures consistent quality, with a 25-year performance warranty for long-term reliability.

Is this panel compatible with most portable power stations on the market?

Yes, the 24V/1.2A output is optimized for mainstream portable power stations. We can also adjust the output specifications to match your target devices for bulk orders.

Do you offer after-sales support or replacement for defective units?

We provide a 12-month product warranty for manufacturing defects. For bulk orders, we include a small percentage of spare units in shipments and offer dedicated after-sales support to resolve issues quickly.

28W Portable Solar Charger Panel