This item is a high-quality power supply. It is perfectly suitable as a replacement or secondary device and provides power to your AA-PA3N40W/E just like your previous power supply, enabling reliable charging of the battery. Quality is our top priority. This means that this power supply for the model AA-PA3N40W/E is new and unused. Our own quality assurance ensures a high standard of quality. Unless we explicitly state that this is an original item, we supply a compatible product. This means it is not an original from the manufacturer and is therefore not produced or recommended by them. All brand and product names are the property of their respective owners and are used solely for compatibility description.