Meet the Bluetti D40, a top - notch plug - and - play DC - DC battery charger designed specifically for the AC200L power station. This compact yet powerful charger is built with advanced electronic protections and input - to - output isolation, ensuring maximum efficiency and safety during every charge. Whether you're in an RV or on a marine vessel, the D40 can significantly enhance your power capabilities. With a 12V / 30A, 400W Max. DC output, it's highly versatile. It's compatible with various battery types such as LiFePO₄, AGM / Gel, Lead - acid, and Calcium Batteries. You can charge your RV house battery via the AC200L, solar panels, or starter batteries. It also offers protection for house and starter batteries and can charge 12V RV appliances. The D40 has unparalleled compatibility and can power all your 12V loads when paired with the AC200L. You can draw power from multiple sources like the AC200L, solar panels, or the starter battery to charge your house battery or DC devices effortlessly. Its intuitive interface makes power management a breeze with clear indicators and user - friendly controls for real - time charging status and settings adjustment. Specifications include a charging power of 400W, a weight of about 2kg (4.4lbs), and specific dimensions, temperature, humidity, noise, altitude, and protection grade details.
Using the Bluetti D40 is a piece of cake. First, connect it to your AC200L power station, solar panels, or starter battery as needed. If you're in an RV or on a marine vessel, you can easily integrate it into your setup. When charging different battery types, make sure to set the appropriate voltage on the charger. For example, for lead - acid batteries, the max voltage is 14.4V, while for AGM / gel batteries, it's 14.7V. You can charge your RV house battery or 12V appliances directly. Keep an eye on the clear indicators on the intuitive interface to know the real - time charging status. If you need to adjust any settings, it's very easy with the user - friendly controls. Now, for some important notes. Don't operate the charger outside the recommended temperature range of - 20°C to 45°C for working and - 20°C to 50°C for storage. Also, make sure the humidity is between 10% and 90%. The charger has a maximum noise level of 43dB, but it's usually quiet during normal operation. And remember, it's designed to work at altitudes up to 2,000m. If you follow these tips, your D40 will serve you well for a long time.
