All concerns were in vain. The battery fits easily into the device. The connecting cable is slightly longer than the original, but can be connected well and stow.
The new battery lasts longer than ever by doing the original battery, which also after a relatively short time (about 1 year) was already broken. After 3 months use is no change in power is to be recognized. Hopefully it stays that way!
Reasonable price and prompt delivery - what more could you want?