3.7V 3000mAh Rechargeable 1S 3C 103665 Lithium Polymer LiPo Battery with Protection Circuit Board & Insulating Rubber Tape, Micro JST 1.25 Connector for Arduino & ESP32 Development Boards Core Intro MakerHawk adopts premium Grade A lithium cobalt oxide cell. Compared with ternary lithium batteries, it features higher energy density, stable discharge performance and longer cycle life, and is certified per UN38.3 standard to guarantee safety and reliability. 【Over-Discharge Protection】 When battery voltage drops to 3.0V upon full drain, the built-in protection circuit cuts off output to stop further discharge and prevent over-discharge damage. 【Over-Charge Protection】 During charging, once cell voltage hits the max rated 4.2V, protection circuit automatically stops charging current to avoid.
