Adafruit USB / DC / Solar Lithium Ion/Polymer charger

This specialized USB/Solar Lithium Ion Polymer Battery charger is uniquely designed for seamless outdoor charging projects and DIY iPod chargers. With over a year of rigorous testing, it ensures efficient plug-and-play battery charging using sunlight.

For an upgraded experience, explore our bq24074-based Adafruit Universal Charger with features like USB C compatibility, enhanced input protection, and a broader voltage range.

Simply connect a 3.7V/4.2V LiIon battery to the BATT port and a 6V solar panel to the DC jack. Place the panel under sunlight to initiate charging, while the charger manages solar current optimization. Though not a 'true' MPPT, it delivers comparable performance without a buck-converter’s cost.

Key Features:

• Compatible with 5-6V DC, USB, or 6V solar panels.
• Smart load sharing for optimal input power use.
• Automatic charging current tracking for high efficiency.
• Three-color LED indicators for status monitoring.
• User-adjustable charge rate up to 1A.

Specification Note: The charger is compatible with Adafruit LiPoly/LiIon batteries only. Ensure solar panels and accessory kits align with Adafruit store products to guarantee performance.

Projects can leverage automatic load-sharing and optional temperature monitoring, providing versatility across various conditions from sunlit outdoors to shaded environments. Perfect your solar power solutions today.