By expanding the existing battery and connect the new battery I have as normal elderly handyman needed almost 40 minutes. I was thrilled by the easy replacement and can recommend this basin mixer out of personal conviction. After all, is the company Grohe with their name for quality, what one also observes this battery. Here, 08/15 mixers from a hardware store not really points, as our previous mixer clearly proves.
The lever guide the mixing lever is consistently good, not too heavy nor too light, and hooked it or caught nothing. About the inserted insert for the plug, which can be opened via the lever system and close easily, I can rename anything negative. The plug closes tightly and is also without problems again forced opening.
All in all, convinced me this mixer.