This board integrated esp8266 18650 battery a standard 3000mah 18650 battery can run for 17 hours.

It's called wifi batteries.I'm going to make it easier to develop esp8266 esp8266 projects to add 18650 batteries.

When you do some esp 8266 projects, you must hate adding power supply.This miniature board can solve this problem. The 3000mah 18650 battery allows esp8266 to run for 17 hours or more.
What makes it special
Compatible with nodemcu.
18650 charging system integration.
Indicates that leds (green indicates red means charging) can be used while charging.
Switch control power supply.
Smt connector for sleep mode 1 additional led programmable (gpio16)
0.5a charging current
1a output
Overcharge protection
Over diskharge protection
10 digital pin reading/writing/interrupt/pwm/i2c/line support (except d0)
Be careful with analog input+-.
If the battery is in the wrong direction, the charging chip will be damaged.