RTC Pi Zero

As I need to run several Pi Zero Ws in an island network, and also still need to use a pHAT besides the RTC, I've ordered several boards. Soldering the headers is a daunting task, but the assembly video tutorial helps if questions should arise. Build quality is fine. There's a big fly in the ointment though: the battery holder for the CR2032. It's huge. So HUGE. The top metal clip for the positive cell side almost touches the board of the next pHAT I've installed on top. So I needed to tape the upper board to avoid unwanted shorting caused by the battery holder. The cell itself isn't the problem. The problem are the enormous height of the plastic body of the cell holder, and then there are even useless spacers on its bottom. For this important reason, I can give only 3 of 5 stars. If anyone knows of a suitable, better cell holder that doesn't waste vertical space, I would be grateful to know.