CR2032/CR2025 Coin Cell Battery Socket Holder

An RTC (real-time clock) chip or backup-memory circuit needs a small, low-power battery to keep running while the main power is off, and this socket holder is the standard way to make that swappable rather than soldering the coin cell permanently in place. Accepting both CR2032 and CR2025 sizes (the two most common coin cell diameters in this application) means the same socket works across whichever cell size a project happens to specify or has on hand.

Snap-in retention holds the cell securely against vibration while still allowing quick, tool-free replacement once the cell eventually depletes - genuinely important for backup batteries, which by their nature need periodic replacement over a device's service life. Durable plastic body construction with metal contacts gives reliable, low-resistance connection to the cell without adding meaningful bulk to a PCB layout.

Common uses are RTC backup battery holders (DS3231, DS1302 and similar clock modules), memory backup power for microcontroller projects needing to retain settings through a power loss, and general low-power coin-cell-powered circuits like small clocks and wearables.