{"title":"Adafruit Micro Lipo - USB LiIon/LiPoly charger [v1]","handle":"adafruit-micro-lipo-usb-liion-lipoly-charger-v1","url":"/products/adafruit-micro-lipo-usb-liion-lipoly-charger-v1","description":"The Adafruit Micro Lipo is a tiny USB charger for single-cell 3.7V/4.2V lithium polymer and lithium ion rechargeable batteries. Its gold-plated PCB-style USB connector plugs directly into any USB port — connect your battery via the JST plug and charging begins automatically. Two LEDs indicate status: red for charging, green for complete. For a USB-C version, see the Micro-Lipo Charger with USB-C.\n\nCharging uses a three-stage process: preconditioning, constant-current fast charge, then constant-voltage trickle charge. The default 100 mA charge rate works safely with any battery size. For larger batteries (500 mAh+), solder the jumper on the back to increase the charge current to 500 mA.\n\nKey Features\n\n\nPCB-Style USB Connector – Plugs directly into any standard USB-A port\n\nThree-Stage Charging – Preconditioning, constant-current, and trickle charge\n\n100 mA Default Charge Rate – Safe for all battery sizes; adjustable to 500 mA via solder jumper\n\nDual Status LEDs – Red (charging) and green (complete)\n\nJST Battery Connector – Standard 2-pin JST for LiPo/LiIon batteries\n\nUltra-Compact – Small enough to fit inside any project enclosure\n\n\nIdeal For\n\nCharging LiPo/LiIon batteries for portable projects\nWearable electronics with rechargeable batteries\nEmbedding in project enclosures for built-in charging\nQuick battery top-ups from any USB-A port\n\n\nPackage Contents\n\n1× Adafruit Micro Lipo Charger v1 (assembled and tested)\n1× 2-pin JST cable (bonus)\n\n\n\nWarning: For use with single-cell 3.7V/4.2V LiPo/LiIon batteries only. Not compatible with older 3.6V/4.1V cells or batteries with different chemistry, voltage, or polarity. The charger can get hot during use — handle by the sides and allow to cool before removing the battery. Battery not included.\n","vendor":"Adafruit","product_type":"physical","in_stock":true,"options":[],"variants":[{"id":7457,"title":"Default Title","sku":"AF-1304","price":12.08,"compare_at_price":0.0,"on_sale":false,"in_stock":true,"available_quantity":7,"option1":"Default Title"}]}