400W Foldable Solar Panel — Portable, efficiency solar charging for outdoor use and home backup Key benefits Fast, reliable charging: 400W maximum output supports rapid charging of multiple devices and can supplement battery packs or power stations for backup power. conversion efficiency: ETFE film combined with monocrystalline silicon delivers up to 23.4 percent conversion efficiency for better energy harvest, including in lower light conditions. Portable and practical: Six foldable panels fold into a compact package while the unfolded size provides a large collection area for sunlight. Lightweight design makes transport and setup straightforward. Stable electrical performance: Rated maximum output voltage 18 V and maximum output current 22.2 A provide consistent power delivery. Measured open circuit voltage Voc is 21.6 V and short circuit current Isc is 26.6 A. Wide operating range: Designed to work across a broad ambient temperature range for use in varied climates, with an operating temperature around 25 C. Confidence backed by : Includes a 1year for product support. Specifications Maximum power (Pm): 400 W Conversion efficiency: up to 23.4 percent Cell and surface: monocrystalline silicon with ETFE film Panels: six foldable panels Unfolded size: 78.5 x 240 x 3 cm (30.9 x 94.5 x 1.18 in) Weight: 10.7 kg (23.6 lbs) Max output voltage: 18 V Max output current: 22.2 A Open circuit voltage (Voc): 21.6 V Short circuit current (Isc): 26.6 A Operating temperature: 10 C to 65 C; around 25 C : 1 year Typical use scenarios Camping or RV trips: Fold and carry to charge phones, lights, portable fridges, and battery packs at a campsite. Day hikes and basecamp: Set up at a basecamp to keep communication devices and accessories powered during multiday trips. Home emergency backup: Supplement batteries and portable power systems during short outages or to maintain critical devices. This 400W foldable solar panel combines efficiency, compact portability, and stable electrical output to provide a practical charging solution for outdoor activities and backup power needs.