The CR2025 MFR series from Renata SA is a line of coin cell lithium batteries designed for a wide range of portable and low-power applications. These small, thin batteries come in a 20mm diameter and 2.5mm height, making them ideal for devices where size and weight are critical factors. If you're working on wearable tech, medical devices, or small IoT gadgets, these batteries are a go-to choice.

One thing worth noting is their consistent performance over time, which is crucial for devices that need to operate reliably for extended periods without replacement. Engineers tend to reach for this type of battery when they require a long shelf life and stable voltage output. Another practical benefit is their ability to deliver a steady current, even under load, which is important for maintaining the functionality of sensitive electronic components.

These batteries typically operate in the 3V range and offer capacities between 170mAh and 240mAh, depending on the specific model. While the exact specifications aren't provided, engineers often appreciate the variety of options available within the series, allowing them to match the right battery to the application's power requirements.