Name: 1 a lithium battery and protect one plate sealTYPE-Cinterface

Interface:TYPE-C

Voltage: 5 vCharge cut-off voltage: 4.2 V + / - 1%Charging current: 1000 ma (Charging can't use quick charge)The battery discharge protection voltage: 2.5 VBattery: over-current protection current 3 aThe board size: 2.8 * 1.7 CM

Note: the need to modify the program DIY friend, you need some programming ability, the Arduino software, ESP8266 module, as wellThe Arduino development environment configuration ESP8266 ability.

Kit includes:The ESP - 01 s aThe shell of a set ofA piece of OLEDLithium batteryLithium batteries a boardsA power switch