TWELSEAVAN 400W Foldable Solar Panel Charger — 24% Efficient ETFE, Lightweight Portable with MC4 & Adapters

The TWELSEAVAN 400W portable solar panel is a lightweight, ETFE-laminated foldable charger that delivers up to 400W at 24% conversion efficiency for fast recharging of compatible power stations.

This folding solar array combines high-efficiency monocrystalline cells and an ETFE top layer to maximize sunlight capture while staying portable for outdoor use. Built with a reinforced polyester back and fiberglass frame, it balances weight, durability, and weather resistance so you can set up in minutes at camp, on an RV roof, or during emergency outages. The kit ships with multiple adapter options and a long MC4 cable to fit most large portable power stations—note the panel's open-circuit voltage of 46.9V when matching to your device.

How quickly will this panel recharge my power station?

With clear sunlight, the TWELSEAVAN 400W panel can produce close to its rated output, shortening recharge times for large battery generators. Actual charging speed depends on sun intensity, angle, and the power station's input limits.

• Maximum rated output: 400W under ideal conditions.
• High-efficiency monocrystalline cells at approx. 24% conversion.
• ETFE laminate improves light transmission and performance.
• Confirm your power station accepts up to the panel's 46.9V open-circuit voltage.

What connectors and compatibility does it offer?

The package includes a 5-in-1 MC4 cable and three DC adapters, letting you connect to a wide range of large portable generators and inverter stations without extra wiring. The long 9.8 ft MC4 cable supplies flexibility in panel placement relative to the device.

• Includes MC4 to Anderson/XT60/8020/7909/5521 adapter options.
• Works with many brands like Jackery, EcoFlow, Bluetti, Anker, and similar units.
• Adapters and cable allow setup up to several meters from the battery unit.
• Not suitable for small stations that cannot handle 46.9V open-circuit voltage.

How portable and durable is this solar charger for outdoor use?

Weighing roughly 22.7 lbs and folding to a compact footprint with a magnetic carry handle, this panel is designed for transport and quick deployment. The backing materials and IP65-rated construction resist dust and water spray, extending usability in variable outdoor conditions.

• Folded dimensions create a convenient carry case with handle.
• Four adjustable kickstands let you aim the panel in seconds.
• High-density polyester canvas back and ETFE top for weather resilience.
• IP65 rating means dust-tight and protected against low-pressure water jets.

What comes in the box and what warranty is provided?

The TWELSEAVAN kit arrives with the panel, a 5-in-1 MC4 connector cable, three DC adapters, and a user manual—everything needed for most setups. TWELSEAVAN backs the product with a 24-month warranty, a 30-day return window, and ongoing customer support.

• Included: 400W panel, MC4 cable, three DC adapters, manual.
• Support: 24-month warranty and lifetime friendly customer service.
• Return: 30-day money-back guarantee for purchase confidence.
• Compatibility note: ensure your power station accepts >46.9V.

Who is this for? The TWELSEAVAN 400W foldable solar panel fits outdoor enthusiasts, RV owners, remote workers, and anyone needing faster renewable charging for mid-to-large portable power stations. Choose this panel if you want a high-efficiency, weather-resistant charger with multiple connector options and easy setup—avoid it if your generator cannot accept the panel's 46.9V open-circuit voltage.