WeMos esp-wroom-02 Mainboard D1 Mini WIFI Module ESP8266+18650 Battery

Description:
 
This develop board integrated ESP8266 and 18650 battery. A standard 3000mAH 18650 battery could run it 17 hours.
What is it?
You can call it "WiFi Battery". I added a 18650 battery to ESP8266 make ESP8266 more easy to develop projects.
Why did you make it?
When you do some ESP8266 projects you must hate to add a power bank to provide the power. This tiny board could solve such problems. A 3000mAH 18650 battery could make ESP8266 run 17 hours or more.
What makes it special?
· Same with NodeMCU.
· 18650 charging system integrated.
· indicate LED inside(Green means full& Red means charging)
· Charging and working could be at the same time.
· 1 Switch could control the power.
· 1 SMT connector could be used to sleep mode
· 1 extra LED could be programmed(Connected with GPIO16[D0])
· 0.5A charging current
· 1A output
· Over charge protection
· Over discharge protection
· 10 digital pins write/read/interrupt/pwm/I2C/one-wire supported(except D0)
· 1 analog input
Be careful + and -. If you put the wrong direction of battery the charging chip will be destroyed.
This product does not include 18650 battery.
Dimensional drawing: this size is measured by hand,There may be 1-3mm errors.
 
Package included:
 
1 x WeMos® esp-wroom-02 Mainboard D1 Mini WIFI Module