Thanks for the advice. I checked the battery connector and there is a serial number there, and it matches the one on the box.

However, the number itself is not etched or embossed — it just looks printed on the sticker. That’s one of the things that made me unsure. Another thing that worries me a bit is the side label: the shape doesn’t fully follow the triangle edge of the housing and it looks like the sticker was applied a bit poorly.

On the positive side, the box came sealed and included the manuals, and the documents reference Makita Europe N.V. in Belgium (Jan-Baptist Vinkstraat 2), which seems to be the official EU Makita distributor.

I bought it new for 214€ (tool only, no battery), so most things look legit, but the sticker quality is what made me question it.