Hello @Meyer3203
Made with USB 5V TP4056 Lithium Battery Charger Module. $1
：
Parts：M5Stamp C3, Battery, Battery Charger, Diode, Switch, Wire.
Work：Connected with double-sided tape.
Operation：The RGB LED is lit on the battery.
BLOG：M5Stamp C3 and battery
https://macsbug.wordpress.com/2022/01/26/m5stamp-c3-and-battery/
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