DollaTek WiFi Module ESP WROOM 02 Motherboard Integrated ESP8266 with 18650 Battery Slot
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18650 charge system integration. LED indicator (green for full, red for charging) can be used while charging. Overcharge protection; over discharge protection. Packaged without battery, please note: If the positive and negative direction of the battery is placed incorrectly, the charging chip will be damaged. SMT connector available for sleep mode; Additional LED Programmable (gpio16). 10 digital pin read / write / interrupt / PWM / I2C / line support (except D0); The analog input should be careful "+ -".
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Amazon
18650 charge system integration. LED indicator (green for full, red for charging) can be used while charging. Overcharge protection; over discharge protection. Packaged without battery, please note: If the positive and negative direction of the battery is placed incorrectly, the charging chip will be damaged. SMT connector available for sleep mode; Additional LED Programmable (gpio16). 10 digital pin read / write / interrupt / PWM / I2C / line support (except D0); The analog input should be careful "+ -".
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18650 charge system integration. LED indicator (green for full, red for charging) can be used while charging. Overcharge protection; over discharge protection. Packaged without battery, please note: If the positive and negative direction of the battery is placed incorrectly, the charging chip will be damaged. SMT connector available for sleep mode; Additional LED Programmable (gpio16). 10 digital pin read / write / interrupt / PWM / I2C / line support (except D0); The analog input should be careful "+ -".
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