# LILYGO T-Bat

> Solar-capable power management module based on CN3065 for charging an 18650 Li-ion battery via Micro USB, solar panel input (5.3V+), or BAT input, with 5V/1A USB output for powering devices up to 1A current draw.

## Quick Facts

- **Brand:** LILYGO
- **Board Type:** Power Module
- **Price:** ~$3.56
- **Product Readiness:** developer
- **CPU:** CN3065 (Power Management IC)
- **CPU Architecture:** N/A
- **CPU Cores:** 1
- **RAM:** none
- **Flash:** none
- **Power:** 5V + Solar
- **Operating Voltage:** 3.7V
- **Battery:** 18650 (user-supplied)
- **Charging Port:** Micro-USB

## Open Source

- **Firmware:** No
- **Schematics:** No
- **PCB Layout:** No

## Use Cases

- iot
- environmental-monitoring
- field-data-logger

## Components

- **CN3065** (battery-charger): CN3065 power management IC supporting solar panel and USB input for 18650 Li-ion battery charging with 5V/1A output — [Datasheet](https://openhardware.directory/r?to=https%3A%2F%2Fwww.consonance-elec.com%2Fpdf%2Fdatasheet%2Fcn3065.pdf&ref=openhardware.directory&product=lilygo-t-bat&source=md-export)

## Description

## Overview

The LILYGO T-Bat is a compact power management module designed to harvest solar energy or USB power to charge an 18650 3.7V lithium-ion battery using the CN3065 charge management IC. It accepts three input sources: a standard Micro USB connector, a 2-pin 2.0mm solar panel connector (5.3V+), and a 2-pin 3.7V BAT connector. The output is a 5V/1A USB Type-A female connector plus an additional 2-pin output header, enabling the module to act as a small solar-powered power bank for microcontrollers and IoT devices. Red and green LED indicators signal charging status and power-on state. The manufacturer recommends use only for devices drawing up to 1A and not for charging smartphones.

## Where to Buy

- [LILYGO](https://openhardware.directory/r?to=https%3A%2F%2Flilygo.cc%2Fproducts%2Ft-bat&ref=openhardware.directory&product=lilygo-t-bat&source=md-export) — $3.56

## Resources

- [product](https://openhardware.directory/r?to=https%3A%2F%2Flilygo.cc%2Fproducts%2Ft-bat&ref=openhardware.directory&product=lilygo-t-bat&source=md-export)

## Tags

`power-management`, `solar`, `battery`, `cn3065`, `18650`, `charging`, `power-module`

## Images

![LILYGO T-Bat](https://nbg1.your-objectstorage.com/openhardware-directory/entities/lilygo-t-bat/28c8bdfca7bf.jpg)
![LILYGO T-Bat](https://nbg1.your-objectstorage.com/openhardware-directory/entities/lilygo-t-bat/9850ef9068bf.jpg)
![LILYGO T-Bat](https://nbg1.your-objectstorage.com/openhardware-directory/entities/lilygo-t-bat/aa15f39401df.png)

> **Battery Powered:** 18650

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