The Adafruit bq25185 with 5V Boost is an all-in-one charging and power supply board that supports USB, DC, and solar charging with an integrated 5V boost converter. It is designed for projects that need a stable 5V supply from a single-cell LiPo battery, eliminating the need for a separate voltage regulator.

Connect a 500 mAh or larger LiPo battery to the JST PH 2-pin port, charge via USB-C or DC/solar input, and power your 5V project directly from the regulated output. Smart power path management prioritises external power, sending excess current to the battery instead of constantly cycling it.

Key Features

• USB Type-C Input – 5V at up to 1A with 5.1k CC resistors for universal compatibility; data lines broken out on the bottom
• DC/Solar Input – 5–18V via side pads with near-MPPT solar optimisation
• Adjustable Charge Rate – Defaults to 1A, adjustable to 500 mA via jumper
• Smart Power Path – Prioritises external power, extends battery life by avoiding charge cycling
• 5V Regulated Output – TPS61023 boost converter delivering stable 5V at up to 1A
• Enable Pad – Disable the 5V boost converter when not needed
• Mounting Holes – For easy installation in enclosures

Status LEDs

• Orange – Charging
• Red – Fault
• Green – Output active

Also Available

• bq25185 with 3.3V Buck Board – Same charger with 3.3V regulated output instead
• bq25185 Charger (no regulator) – Base charger board without integrated voltage regulation

Ideal For

• Portable 5V battery-powered projects
• Solar-powered IoT devices
• Projects requiring USB + solar charging flexibility
• Powering 5V microcontrollers and sensors from a LiPo battery

Package Contents

• 1× Adafruit bq25185 USB/DC/Solar Charger with 5V Boost Board