Garbage, complete garbage! I bought a few hundred of these for a STEM class I teach. After installing the CR2032 battery, about 20% of the battery holders broke. Not sure what's going on, but the metal bracket holding the battery seems to be pressing down on the battery too much to hold it. The bracket breaks at the soldering points. Maybe the soldering failed or something. All battery holders that did not break worked perfectly. I would not buy them again and I would spend the money to buy a better option.
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