Replacement for WF-9800 Series - This highly efficient converter is designed to function as a reliable replacement for the WF-9800 series and is fully compatible with the WFCO WF-9855. With its built-in 3-stage charging system and fixed single output modes, you can easily set the output voltage between 13.0 Vdc and 16.5 Vdc to cater to your unique power needs. This converter delivers exceptional performance and versatility, catering to delicate electronic equipment and heavy-duty appliances. Reverse Battery Protection - With the built-in reverse battery protection, you can rest easy knowing that your devices and converter are safe from potential damage due to reverse polarity issues. This feature detects the battery's polarity and automatically adjusts the circuit to prevent harm to your equipment by ensuring that the current flows in the correct direction. It gives you peace of mind, so you can focus on your tasks without worrying about mistakes that could cause damage. Certified safety - Rest easy with the PowerMax converter, a trusted choice for safety. It holds prestigious UL and CUL certifications, a testament to its compliance with stringent safety standards. This certification guarantees a worry-free operation, providing you with the utmost peace of mind. Whether on the road or parked at your destination, the PowerMax converter prioritizes safety to ensure a secure and reliable power supply for your devices. Wide voltage range - The PowerMax converter is a flexible power source suitable for various situations. It has a wide voltage range of 13.6Vdc to 14.4Vdc, which makes it compatible with different electrical systems. This converter is ideal for powering RVs, boats, and other 12V systems. It always performs consistently and reliably, regardless of its working voltage. Therefore, it is an excellent choice for many different settings. Controlled, Quiet, Cool Operation - This converter operates quietly and reliably, ensuring excellent performance. It has a temperature control system that keeps the fan quiet while maintaining the ideal temperature. An LED indicator light shows the converter's status. This converter is perfect for those who want a calm and controlled environment. You won't have to worry about noise or overheating. Enjoy a reliable and efficient power supply with this converter.