300W 4-Fold Portable Solar Panel

SP-4F300W

High-current 300W solar panel with 23% cell efficiency, ideal for professional off-grid power and RV systems.

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Professional Performance: Delivers a stable 7.5A current and 40V output.

Advanced Materials: Fiberglass board backing combined with ETFE provides superior rigidity and longevity.

Industrial Logistics: Specifically packed for safety in long-distance shipping; supports customized connector interfaces for specific brand compatibility.

Electrical Parameters	Production Technology	Product Dimensions	Packaging Information
Rated Power: 300W Peak Operating Voltage: 40V Peak Operating Current: 7.5A Open Circuit Voltage (Voc): 48V Short Circuit Current (Isc): 8.25A Cell Conversion Efficiency: 23% IP Rating: IP68 Cable Length: 1.5 meters Connector (Optional): DC5521, DC7909, Anderson 30A, XT60 or MC4	Cell Technology: Monocrystalline Silicon Encapsulation Material: ETFE + EVA + Fiberglass Board Manufacturing Process: Integrated Lamination Cell Connection: 4S4P (4 Series x 4 Parallel), 4-Fold	Folded: 570x595x45mm Unfolded: 2140x595x25mm	Inner CTN Size: 700x95x830mm Outer CTN Size: 700x95x830mm Inner/Outer CTN Material: K737K or V646V Packing Qty: 1pc/inner, 2pcs/outer Unit N.W.: 11.50kg Unit G.W.: 12.55kg Outer CTN N.W.: 23.00kg Outer CTN G.W.: 25.10kg

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Message us on WhatsApp with the capacity you need, the quantity and the destination market. You will get the right configuration and a price, usually within the hour. You can also email sales@beeste.com — we reply within 24 hours.

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What 300W actually delivers

About 840 to 960Wh a day under the same assumptions, which makes it the natural partner for a 1,000Wh to 1,500Wh station. A stable 7.5A at 40V is the figure that determines charge rate, not the headline wattage.

Who it suits

Professional off-grid and RV systems where the array has to recharge a working battery bank, not just top up a portable unit. Also used in remote monitoring and telecom cabinets.

Before you order

Match the 7.5A output to the controller's current limit. An oversized panel on an undersized controller wastes the difference.
Confirm the fiberglass backing and ETFE surface for the climate it will be deployed in.
Ask about bypass diode configuration if partial shading is likely.

Listing note

Match this to controllers rated above 7.5A with headroom for cold-morning voltage rise. Publishing the ceiling you tested against prevents the most common post-sale support question in this class.