Hello, I have inherited a Wallstreet 125. The battery has been removed and is now missing. I asked once at ATU and they recommended the following replacement battery: https://www.atu.de/…/…-Battery-with-acid package-12V-9Ah-IC719S?… But they were not 100% sure if the battery fits in from the size. With this battery it is necessary to fill it with acid. That’s not good, because I have no idea about it. Is there no alternative? In other places in the Internet stands, batteries with extra acid would no longer be sold to private customers and the acid filling would have to take over a workshop? The scooter is over 10 years old, but has not been moved for 7 years, but stood in a garage. Does it even make sense to install a battery or is the whole part scrap anyway?