Portable 30W 12V Solar Car Battery Charger & Maintainer

【2-in-1 Solar Charger & Maintainer】 More than just a charger, FieryRed solar panel is a smart battery maintainer. Perfect for infrequently used vehicles (cars, boats, motorcycles) and outdoor electronics, it ensures instant starts and protects batteries from long-term discharge damage, extending their lifespan.
【Universal Compatibility】 The control box of our 30W foldable solar panel supports LiFePO4, Lead Acid, AGM, Lion and Calcium batteries via its DC Port, meeting all your energy needs. Stay connected with the USB-A and USB-C PD ports for fast charging, also you use the DC port to channel external battery power to USB devices for reliable charging.
【High Efficiency & Intelligent Control】 Built with Grade-A monocrystalline solar cells for a superior 22%-30% conversion efficiency. The smart control box clearly displays battery level and charging status with a simple one-button switch to select your battery type, making power management effortless.
【Ultra-Portable & Versatile Setup】 Incredibly lightweight and compact, it folds down to a briefcase size (13.6 x 9.7 x 2.2 inches) and weighs only 1.2 kg. Includes suction cups and D-ring clips for easy mounting on car windows or hanging from a backpack. Comes with three cable options (Alligator Clips, Terminal Rings, CIG Socket) for any situation.
【Built to Last, Safe to Use】 The rugged ETFE material resists UV rays and corrosion. The control box provides complete protection against overcharging, over-discharging, and reverse current. With an IP67 waterproof rating (though should be protected from heavy rain), it’s your reliable power partner for camping, RVing, and all outdoor adventures
【How to Check Current Value?】 The control box on the back of the product that has been upgraded compared to others. The entire box needs to be disassembled if you want to test. For this 30W pannel, maximum power supply voltage (VMP) of the factory: 17.4V, maximum power supply current (IMP): 1.73A, Conversion efficiency: 90%; 17.4Vx1.73A=30Wx0.9=27W (total output power of the solar panel) /13.5V (if the current battery voltage value is V2)=2A (charge the battery with I2 current). When the sunlight is strongest, measure the current value to obtain the total output charging power P2=current battery voltage V2 x measured current value I2.