Battery Shield D1 Mini Single Charging Boost Module V1.1.0

What it is: An expansion shield designed specifically for the Wemos/LOLIN D1 Mini (ESP8266) development board to allow portable operation from a 3.7V Single-Cell Lithium (LiPo or 18650) battery.

Key Specs:

• Charging: Onboard Micro-USB port and lithium charger IC (typically TP5410 or TP4056 derivative) with 0.5A or 1A charging current.

• Boost Converter: Steps up the battery’s 3.7V nominal voltage to a stable 5V DC output to power the D1 Mini and attached sensors.

Key Features: Compact stackable header design, charging status indicator LEDs (red for charging, green/blue for full), and built-in battery over-charge/over-discharge protection.

Common Uses: Converting ESP8266/ESP32 D1 Mini IoT projects, wireless sensor nodes, and smart home monitors into standalone, battery-powered devices.