Description
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The CR2450 is a lithium coin-cell (button) battery, with a nominal voltage of 3.0 V.
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Its physical dimensions are approximately 24 mm in diameter and 5.0–5.1 mm in height.
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It uses a lithium / manganese dioxide (Li/MnOâ‚‚) chemical system
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It’s non-rechargeable — designed for single use until depleted.
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Stable output voltage of 3 V, which stays fairly constant over much of its discharge.
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High energy density: despite its small size, it stores a decent amount of energy for compact devices.
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Long shelf life / low self-discharge: The datasheet shows self-discharge of ~1% per year
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Wide operating temperature range: It can operate reliably in challenging conditions (for example from around –30 °C up to +60 °C) depending on brand.
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Compact size makes it suitable for small and thin electronic devices (wearables, key fobs, remote controls, watches, sensors).
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Many equivalent/alternate codes: CR2450, CR2450N, DL2450, 2450 in shorthand.
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Reliable and well-supported by major manufacturers (e.g., datasheet from Energizer)





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