In my experience, only a single-sheet feeder ... but at least has a duplex unit.

Hello, I have installed this version and the scanner is running for me

Yes, individually scanned pages can be merged into a single document. This can be done using the supplied software or other document management tools that allow files to be merged. The software supplied with the Brother DSmobile DS-640 supports functions such as scanning to a file or image format, making it easier to combine pages.

No, the scanner cannot be opened. It is a swipe scanner and therefore not suitable for scanning drawings. It is too small for A3.

This is a great software. The download link is included. I really enjoy working with this software. I wish you lots of fun.

Unfortunately I cannot answer this question. I use the scanner when I'm on the boat with my laptop (MacBook), but I scan the documents and save them to the memory card. I tried to scan directly from the laptop years ago, but the programme (DSmobileCapture) from Brother is pretty stupid, so I never used it.

Hello, yes I have been using it for 2 years with Microsoft, without any problems. You can use your own software or your previous scanner software. One battery charge with wifi is enough for about 100-120 double-sided copies, you can also scan with cable, the battery charges up.

I use the scanner with the Mac Book Air. It needs the Brother iPrint&Scan app and you have to connect to the scanner via the network. But it works perfectly.

No, unfortunately not. Additional software must be used for this.

Only one page can be inserted at a time.

Indeed, after several searches, this product does not have a duplex function. We will correct this.

Hello Anonymous The battery can be replaced in any case, see the Quick Start Guide: https://download.brother.com/welcome/doc003211/cv_ds820w_ger_qsg_e.pdf I cannot currently find a type designation for the battery. Presumably it is a spare part and can be obtained from specialist dealers (Brother partners). Other sources (if type is correct): https://www.google.ch/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&cad=rja&uact=8&ved=2ahUKEwiFsaOB74jgAhXEJlAKHfMQB9MQFjAAegQICRAB&url=https%3A%2F%2Fwww.amazon.de%2FBrother-Li-Ion-Battery-MDS2E-LD0937001%2Fdp%2FB07BNHF85K&usg=AOvVaw2MSObYQp52FTB5VnmBuLxZ (For price orientation). Greetings

No, the scanner is rather rudimentary. It is also not network-compatible. The documents can only be downloaded with difficulty from the scanner's internal memory via a web browser and WiFi.

According to the user manual, it is possible to print on both sides: http://www.produktinfo.conrad.com/datenblaetter/1300000-1399999/001340196-an-01-de-BROTHER_DS_820W_SCANNER.pdf

Unfortunately not.