400W Portable Solar Panel for Power Station, 24% High Efficiency Lightweight ETFE Foldable Solar Panel Charger, MC4 Output, IP65 Waterproof, for Outdoor Camping, RV, Emergency Power Supply
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Availability:
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Arrives
Monday, Oct 26
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Size: 400W
Features
- High Conversion Efficiency, Fast ChargingThe upgraded A+ grade monocrystalline solar cells achieve a conversion rate of 24%, maximizing solar energy capture. With ample sunlight, they can generate a maximum output power of 400W. The latest ETFE laminated case offers a light transmission rate of over 95%, significantly improving the performance of the solar cells.
- Wide Compatibility, 8-in-1 MC4 ConverterThe Twelseavan 400W solar panel features a 5-in-1 MC4 connector cable and 3 DC adapters, making it compatible with most of portable power stations like Jackery, Ecoflow, Bluetti, Flashfish, Anker, and more. With a 9.8ft MC4 connector cable, you enjoy maximum flexibility and effortless connection options for a hassle-free setup.
- HIGH PORTABILITY & EASY SETUPThe fiberglass material significantly reduces the weight of the solar panel, which is only 22.7 lbs. The folded size is 26*35.5 inches, and magnetic handle for easy carrying anywhere. Equipped with 4 adjustable kickstands, it can be firmly placed on any ground and easily setting the angle of the solar panel to maximize the absorption of sunlight, taking only a few seconds to set up to capture energy from the sun.
- Ultimate Durability: Weather-Resistant and WaterproofThe back of our solar panels is made from high-density polyester canvas, offering excellent wear resistance, dust resistance, and high-temperature resilience. Combined with a highly durable ETFE laminated case, this design enhances outdoor durability and extends the lifespan of the panels. With an IP65 waterproof rating, they can withstand various weather conditions, ensuring reliability for all your outdoor activities.
- Buy Twelseavan with Confidence1 x TWELSEAVAN 400W solar panel, 1 x 5-in-1 MC4 connector cable (MC4 to Anderson/XT60/8020/7909/5521), 3 x DC adaptors, and 1 x user manual. Twelseavan offers a 24-month warranty, a 30-day money-back guarantee, and lifelong friendly customer service.
- Please note: The open-circuit voltage of the TWELSEAVAN 400W solar panel is 46.9V, which is not suitable for small portable power stations. Please ensure that the maximum voltage supported by your device is greater than 46.9V.
Description
Why doesn't my solar panel reach its rated power? Solar panel output varies with light intensity, optimal 90° angle, shadows, dust & debris. Test in full sun with no shade. Portable power stations have max input limits; panel output can't exceed this cap even under bright sunlight. Will outdoor solar panels sustain damage during rainfall? The panel features IP65 waterproofing for outdoor use. Its control box is not waterproof; keep it dry while operating. Do not submerge the panel in water to prolong its service life. How to clean the solar panel? Wipe the panel surface gently with a damp cloth to remove dust and dirt. After use, store the panel in a clean, dry, and cool place and allow it to cool down completely. Founded in 2010, Twelseaven is a professional manufacturer dedicated exclusively to solar panels. Backed by experienced R&D and design capabilities, we keep innovating sustainable solar solutions to power everyday life. We provide premium portable, foldable, flexible and HPBC solar panels. Our products perfectly suit outdoor, RV, off-grid use and home energy needs. We always adhere to reliable quality and attentive service for global customers.
Brand: TWELSEAVAN
Material: Monocrystalline Silicon
Product Dimensions: 35.5"L x 1.9"W x 26"H
Item Weight: 22 pounds
Efficiency: 24%
Efficiency: 24%
Amperage Capacity: 10.6 A
Maximum Voltage: 46.9 volts
Maximum Power: 400 watts
Special Features: Foldable, Portable
Output Voltage: 40 volts
Connector Type: MC4
Item Dimensions L x W x H: 35.5"L x 1.9"W x 26"H
Item Weight: 22 pounds
Material Type: Monocrystalline Silicon
Brand Name: TWELSEAVAN
Included Components: 400W SOLAR PANEL
Model Number: solar panel
Unit Count: 1 Count
Number of Items: 1
Number of Packs: 1
Manufacturer Warranty Description: 2 year
Manufacturer: TCXWPOWER
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Monday, Oct 26
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
Size: 400W
Very good product. Always keep in mind you will never get the full capacity from any solar panel. The highest I’ve seen so far as of may 29 2026 east coast Boston was 367. Which is very good already considering it’s not summer yet when the sun is close as it gets. Another plus is the different connectors. I use it for my pecron 3600 lfp battery station and it’s mint. I own a ford e250 and I place the panels directly on top of my van and it works pissa. I’ve owned it 2 months so far from this post. Will update if anything changes.
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Reviewed in the United States on May 29, 2026 by aaron6607
Size: 400W
If you need portable buy this. It works really well. I have this hooked up to a 200ft 10awg mc4 solar cable, I'm able to get 300w+/- with full sun, I'm amazed considering I have it hooked up 200ft away. Obviously buy rigid if you're never going to move this. If you want portable, buy this.
Reviewed in the United States on June 29, 2026 by jack morris
Size: 400W
Great product, very satisfied
Reviewed in the United States on June 1, 2026 by Carl E Smith
Size: 400W
This has worked very well for me. Arrived on time in good condition.
Reviewed in the United States on June 4, 2026 by Scrapper142
Size: 400W
I'm very happy with this buy. Here's some of the good and (lightly) bad. The Good: • It's decently heavy, hopefully that accounts for it's durability too. • Gives about 375-385 watts in optimal conditions, which is very good. I connect it to an Anker C2000 gen 2. • The kick stands are nice, easily adjustable once you get them all set. Takes me minutes to set up. • Haven't had any issues with fabric fraying in the months that I've had it, and I've put it on gravel, concrete, dirt, etc. The Bad: • It takes a bit of effort to get it standing, maybe a minute or two. But once all the legs are up, it's easy to adjust from there.
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Reviewed in the United States on April 23, 2026 by Patrick
Size: 400W
⭐⭐⭐⭐⭐ Reseña Técnica: [Anker Solix F3800 con dos fotoceldas cada una de 400 watts flexibles que en total me llegan a dar con días soleado 600 watts aproximadamente, Comjoy 2,600 W. Batería Vatrer 300 Ah. ] – Integración en Sistema Solar para RV (Winnebago Minnie 2832FK con fotocelda 200 W) Ingeniero en Control y Automatización (40 años de experiencia) – Uso en RV estacionado 24/7 Contexto del sistema: · RV: Winnebago Minnie 2832FK (2023). · Paneles: 200W (techo fijo) + 400W Anker + 400W adicionales (800W totales). · Almacenamiento: Anker SOLIX F3800 (3,840Wh) + Batería auxiliar LiFePO4 de 300Ah (3,840Wh) en la nariz del RV. · Respaldo: Generador inversor de gasolina (ComJoy 2600W) para días nublados. · Carga crítica 24/7: Starlink Standard (~75-100W), refrigerador 12V, convertidor del RV. --- 🔹 Rendimiento en el mundo real (no solo especificaciones de laboratorio) He probado este [producto] durante semanas en condiciones reales de campo: · Días soleados: Producción solar sostenida de 400-600W por la mañana (con paneles orientados al este a 50°). El sistema se autoabastece y mantiene el 100% de carga. · Días nublados y tormentas: Producción solar reducida a 50-150W (luz difusa). El consumo base del RV (Starlink + convertidor) requiere un respaldo. · Prueba de estrés nocturno (sin sol): Consumo del RV de 150-200W (Starlink + convertidor + cargas parásitas). El Anker pasó la noche del 100% al 30% en ~10 horas, demostrando una autonomía realista. · Prueba de carga con generador: El modo ECO del generador ajusta la potencia de salida desde 1,300W hasta 35W según la demanda del Anker. El ruido pasó de 45-50 dBA (carga alta) a 25 dBA (carga baja), siendo imperceptible desde dentro del RV. --- 🔹 Puntos clave sobre [producto] que solo se aprenden usándolo 1. Integración con Anker F3800 (si aplica): · La capacidad real utilizable es la especificada. · El BMS responde bien a cargas y temperaturas variables (de -10°C a 39°C en mis pruebas). · Importante: El voltaje de carga (14.2-14.6V) es crítico para llegar al 100% real. Asegúrate de configurar el controlador solar a "Lithium". 2. Sincronización con paneles solares (si aplica): · Para días nublados, la producción real fue del 5-15% de la nominal (800W → 40-120W), acorde con la física de las celdas. · La orientación e inclinación de los paneles influyen más que la potencia nominal. En mi caso, inclinarlos a 50° hacia el este extiende la producción hasta 2 horas más por la tarde. 3. Resistencia a condiciones ambientales: · [Producto] soportó temperaturas de 31°C a 39°C sin sobrecalentamiento. · La funda original (IP33) protege de lluvia ligera, pero para tormentas fuertes usé una lona adicional con ventilación forzada (sin acumular calor). --- 🔹 Logros medibles de mi sistema (con este [producto] incluido) · Autonomía sin sol: 20-24 horas con Starlink + convertidor (100-200W). · Tasa de carga solar: 400-600W por hora en días despejados (800W de paneles). · Tiempo de carga con generador: Del 30% al 100% en ~2 horas a 1,300W. · Redundancia total: El sistema nunca se apagó, incluso tras tormentas de 24 horas. La batería auxiliar de la nariz (300Ah) tomó el relevo cuando el Anker requería recarga. --- 🔹 Advertencias técnicas (para compradores realistas) · Consumo interno del Anker: Cuando está encendido y sin carga AC, consume 20-30W por sí mismo (BMS, pantalla, ventiladores). Es normal. · Puertos AC durante carga externa: Si cargas el Anker con un generador, solo los puertos UPS (3 tomas) suministran energía (passthrough). Los demás puertos AC se desactivan. Esto está en el manual, pero muchos lo pasan por alto. · El modo ECO del generador es funcional, no un truco de marketing: Reduce el ruido y el consumo de gasolina drásticamente cuando la demanda es baja (ej. carga de mantenimiento). --- 🔹 ¿Recomendaría este [producto]? Sí, rotundamente. Pero con una condición: no es mágico. Debes dimensionar tu sistema (paneles, baterías, consumo) según tu uso real. Este [producto] cumple con sus especificaciones y es fiable, pero la eficiencia final depende de la instalación, la orientación solar y la gestión de cargas. Si buscas un sistema "plug-and-play" para un RV o vivienda aislada, este [producto] es una base excelente. Si esperas que genere energía en días nublados como si hubiera sol directo, necesitarás más paneles o un generador de respaldo. Mi veredicto: 5 estrellas. Funciona, es robusto y su integración con otros componentes (baterías, inversores, generadores) ha sido perfecta tras meses de pruebas en campo. --- Nota final: Adjunto fotos de la instalación y capturas de la app (voltajes, corrientes, curvas de carga). Si tienes dudas técnicas, comenta y respondo. ```text ⭐⭐⭐⭐⭐ Technical Review: [Anker Solix F3800 with two 400W flexible solar panels (total 800W, ~600W peak on sunny days), Comjoy 2600W generator, Vatrer 300Ah battery] – Integration into an RV Solar System (Winnebago Minnie 2832FK with factory 200W panel) Controls & Automation Engineer (40 years experience) – Use in stationary RV 24/7 System Context: · RV: Winnebago Minnie 2832FK (2023). · Panels: 200W (fixed roof) + 400W Anker + 400W additional (800W total). · Storage: Anker SOLIX F3800 (3,840Wh) + Auxiliary 300Ah LiFePO4 battery (3,840Wh) in the RV front compartment. · Backup: Gasoline inverter generator (ComJoy 2600W) for cloudy days. · 24/7 Critical Load: Starlink Standard (~75-100W), 12V refrigerator, RV converter. --- 🔹 Real-World Performance (Not Just Lab Specs) I tested this [product] for weeks in actual field conditions: · Sunny Days: Sustained solar production of 400-600W in the morning (with panels facing east at 50° tilt). The system is self-sufficient and maintains 100% charge. · Cloudy & Stormy Days: Solar production dropped to 50-150W (diffuse light). The RV's base load (Starlink + converter) required backup power. · Nighttime Stress Test (No Sun): RV consumption of 150-200W (Starlink + converter + parasitic loads). The Anker went from 100% to 30% overnight in ~10 hours, demonstrating realistic runtime. · Generator Charging Test: The generator's ECO mode adjusted output power from 1,300W down to 35W based on the Anker's demand. Noise dropped from 45-50 dBA (high load) to 25 dBA (low load), becoming imperceptible from inside the RV. --- 🔹 Key Takeaways About [product] Learned Only by Using It 1. Integration with Anker F3800 (if applicable): · Usable capacity is as specified. · The BMS responds well to variable loads and temperatures (-10°C to 39°C in my tests). · Important: Charge voltage (14.2-14.6V) is critical to reach true 100%. Ensure your solar charge controller is set to "Lithium". 2. Synchronization with solar panels (if applicable): · On cloudy days, real output was 5-15% of nominal (800W → 40-120W), consistent with solar cell physics. · Panel orientation and tilt matter more than rated wattage. In my case, tilting them 50° east extended afternoon production by up to 2 hours. 3. Environmental Durability: · [Product] withstood temperatures from 31°C to 39°C without overheating. · The original Anker cover (IP33) protects against light rain, but for heavy storms I used an additional tarp with forced ventilation (ensuring airflow to prevent heat buildup). --- 🔹 Measurable Achievements of My System (With This [product] Included) · No-Sun Runtime: 20-24 hours with Starlink + converter (100-200W load). · Solar Charge Rate: 400-600W per hour on sunny days (with 800W of panels). · Generator Charge Time: From 30% to 100% in ~2 hours at 1,300W. · Total Redundancy: The system never shut down, even after 24-hour storms. The auxiliary front battery (300Ah) took over when the Anker needed recharging. --- 🔹 Technical Warnings (For Realistic Buyers) · Anker Internal Consumption: When powered on with no AC input, it consumes 20-30W by itself (BMS, display, fans). This is normal. · AC Ports During External Charging: If you charge the Anker with a generator, only the UPS ports (3 outlets) provide power (pass-through). The other AC outlets are disabled. This is in the manual, but many overlook it. · Generator ECO Mode is functional, not marketing hype: It drastically reduces noise and fuel consumption when demand is low (e.g., maintenance charging). --- 🔹 Would I Recommend This [product]? Yes, absolutely. But with one condition: it's not magic. You must size your system (panels, batteries, loads) according to your actual usage. This [product] meets its specifications and is reliable, but final efficiency depends on installation, solar orientation, and load management. If you want a "plug-and-play" system for an RV or off-grid home, this [product] is an excellent foundation. If you expect it to generate power on cloudy days like it's full sun, you will need more panels or a backup generator. My Verdict: 5 stars. It works, it's robust, and its integration with other components (batteries, inverters, generators) has been perfect after months of field testing. --- Final Note: I am attaching photos of the installation and app screenshots (voltages, currents, charge curves).
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Reviewed in the United States on June 9, 2026 by Christopher
Size: 400W
I have a Jackery 2000. This solar panel came with all the attachments. I didn’t need to buy any extra adaptor. It charged my Jackery 10% in one hour, so I assume it would fully charge in 10 hours. And to top it off, it was a slightly cloudy day. That being said, I found the panels rather flimsy and floppy. And heavy. Not sure how long they will last. That’s why I am giving it a 4.
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Reviewed in the United States on June 9, 2026 by Diane Brown
Size: 400W
que es un exelente producto de muy buena calidad y muy practico para enviar para cuba yo le doy 100 de 10 ,buen tamaño
Reviewed in the United States on June 23, 2026 Reviewed in the United States on June 23, 2026 by Maricel