Description

This small charger will allow you to recharge your batteries polymer Lithium Ion 3, 7V/4, 2V using a simple USB port. The batteries are connected on the Adafruit Micro Lipo with a conecteur JST 2 points. Two LEDS are present, a red that illuminates during the load and a green when the charge is complete, in short, it's easy to use.

The load is done in 3 steps:

• step 1: load of preconditioning
• step 2: load current constant.
• step 3: load at constant voltage to maintain full battery.

The charge current is 100mA by default, which allows to racharger most of the drums on a USB port, but it is possible to mount it to 500mA for the battery accepting this charge current.

Attention: Use this charger with the battery LiIon/LiPoly Adafruit brand. Other batteries may have a charge voltage, a pinout, a polarity or different chemical composition. 

Features

• Sold assembled, nothing to weld
• 5V input via a circuit style USB connector
• To charge a battery polymer Lithium-Ion/Lithium 3.7 / 4.2V (by old cells 3.6 / 4.1v)
• Constant charge current to 100mA, adjustable to 500mA with a simple solder
• A cable 2 - pin JST offered!
• Dimensions: 30mm x 12.5 mm x 8 mm (1.2in x 0.3in x 0.3in)