theinein / battery_babysitter

Charge management and monitoring breakout for single-cell lithium polymer batteries.

SparkFun Battery Babysitter

SparkFun Battery Babysitter (PRT-13777)

The SparkFun Battery Babysitter is an all-in-one single-cell lithium polymer (LiPo) battery manager. It’s half battery-charger, half battery monitor, and it’s all you’ll ever need to keep your battery-powered project running safely and extensively.

The Battery Babysitter features a pair of Texas Instruments LiPo-management IC’s: a BQ24075 battery charger and a BQ27441-G1A fuel gauge. The BQ24075 supports adjustable charge rates up to 1.5A, as well as USB-compliant 100mA and 500mA options. It also features power-path management, guaranteeing reliable power to your project.

The self-calibrating, I2C-based BQ27441-G1A measures your battery’s voltage to estimate its charge percentage and remaining capacity. The chip is also hooked up to a current-sensing resistor, which allows it to measure current and power! It’s a handy IC to have, especially if you ever need to keep an extra eye on your project’s power draw.

Repository Contents

• /Documentation - Data sheets, additional product information
• /Hardware - Eagle design files (.brd, .sch)
• /Libraries - Libraries for use with the Battery Babysitter
• /Production - Production panel files (.brd)

Documentation

• BQ27441 LiPo Fuel Gauge Arduino Library - Arduino library for the Battery Babysitter's BQ27441-G1A LiPo Fuel Gauge.
• Hookup Guide - Basic hookup guide for the Battery Babysitter.
• SparkFun Fritzing repo - Fritzing diagrams for SparkFun products.
• SparkFun 3D Model repo - 3D models of SparkFun products.
• SparkFun Graphical Datasheets -Graphical Datasheets for various SparkFun products.

Product Versions

• Battery Babysitter v1.0 (PRT-13777)- Initial release of the SparkFun Battery Babysitter.

Version History

• 1.0 - v1.0 Hardware release

License Information

This product is open source!

Please review the LICENSE.md file for license information.

If you have any questions or concerns on licensing, please contact [email protected].

Distributed as-is; no warranty is given.

• Your friends at SparkFun.