18650 Battery Charger Module – 5V/9V/12V DC-DC Converter With UPS Function For DIY Projects

Hey DIYers!

Got a project that needs a reliable power source?

This little board is a versatile 18650 Lithium-ion battery charger and a DC-DC converter all in one.

It's brand new and ready to be the heart of your next creation.

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It takes power from a single 18650 cell and boosts it up to a steady 5V, 9V, or 12V output—perfect for powering all sorts of gadgets and microcontrollers.

The really neat part is the built-in UPS function.

Think of it as a mini backup battery: you can keep it plugged into USB power, and it'll charge the battery.

If the main power cuts out, it automatically switches over to battery power without skipping a beat, so your project keeps running.

Ideal for custom power banks, portable speakers, or any project where you need a dependable power source.