SparkFun Battery Babysitter - LiPo Battery Manager

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 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 ICs: a BQ24075 battery charger and a BQ27441-G1A fuel gauge. The charger supports adjustable charge rates of up to 1.5A as well as USB-compliant 100mA and 500mA options. It also features power-path management guaranteeing power to your project even if the battery has died. The self-calibrating I2C-based BQ27441-G1A measures your battery’s voltage to estimate its charge percentage and remaining capacity. It’s also hooked up to a current-sensing resistor which allows it to measure current and power! It’s a handy IC to have if you ever need to keep an extra eye on your project’s power draw. Get Started With the Battery Babysitter Guide! Features:LiPo Charger and LiPo Fuel Gauge combined into one boardDIP-switch-selectable charge rates of 100mA 500mA or 1.5AMicroUSB port for charging or external optionsDynamic power-path managment maintains a reliable output supplyOn/Off switch disconnects the battery for more power saving5V-tolerant I2C interface to fuel gaugeFuel gauge measures voltage percentage and currentDocuments:SchematicEagle FilesHookup GuideDatasheet (BQ24075 Charger)Datasheet (BQ27441-G1 Fuel Gauge)Arduino LibraryGitHub