Lup Yuen Lee 李立源 trên Twitter: "#STM32 Blue Pill + #Quectel #NBIoT Module + 18650 lithium ion battery... Sealed in a transparent junction box... Insulated by clear hydrogel pellets... Workable as an
AmpStrike - Battery Powered Bench Power Supply - Electronics-Lab.com
Lithium Ion Battery - 110mAh - PRT-13853 - SparkFun Electronics
GitHub - WRansohoff/STM32_LiPo_Example: Simple lithium battery-powered STM32 board using an MCP73831 for charging.
Lithium-Ion Battery Charger Circuit using MCP73831
AVR-based Li-Ion battery charger – EmbedBlog
Reading Battery Voltage with the STM32's ADC – Vivonomicon's Blog
How to use a lithium battery for a 3.3V low-consumption circuit? | AVR Freaks
How to keep your device up and running during power outages