So far I have 2 batteries LR626 used in a wristwatch. The voltage tester for batteries showed green. But you seem to be very inefficient. After just one day, the clock did not go right with the first. The question then always: clock or battery defective? I have replaced the battery. The next held just 2 weeks. That is far too little, it should be at least 1 year. In the third experiment I used a brand battery from Varta. In order for the clock then ran least 5 weeks. Result: The clock is broken and I have now thrown away. But the brand battery held about 3 times longer than by the second battery and the first was even weaker.
Even though the price is very cheap, use nothing underperforming batteries. For this, the change is much too complicated.
