LIR1220 Battery Charger plugs in USB

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https://www.electronics-lab.com/lir1220-battery-charger-plugs-in-usb/

The LIR1220 is a 12.5 mm. lithium-ion rechargeable coin cell. It is a relatively new technology. Traditionally, li-ion coin cells are non-rechargeable but for some situations, rechargeable compact cells are desired. Coin cells like CR2032 are ultra-compact and are used in a variety of compact systems like wearables and if something with this form factor […]

Lithium Coin Cell Charger for Rechargeable Coin Batteries

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https://www.electronics-lab.com/lithium-coin-cell-charger-rechargeable-cr2016-cr2025-cr2032-coin-batteries/

This versatile charger has been designed to charge Lithium Coin Cell Rechargeable CR2016/CR2025/CR2032 Coin Batteries. Just insert the battery to the holder, and plug in to any USB port to recharge, D3 Power LED, D1 LED indicates the charge cycle. The board has been designed to use dual chips, either BQ21040 IC from Texas instruments […]