Lithium batteries are not like regular AA batteries. åÊThey need very specific condition to charge safely. åÊFor ANY project where you plan on charging a lithium battery you need an appropriate charge controller.

What could you use this for? åÊHow about combining this circuit with one of our DC to USB circuits and making a recharging pack for your gadget? åÊOr adding a solar panel along with a DC to USB circuit to make a solar powered charger? åÊThen you could power your gadgets or projects through the mystical power of the sun!

Specs:

Charge module: Linear charging
Current: 1A åÊ
Charge precision: 1.5%
Input voltage: 4.5V-5.5V
Full charge voltage: 4.2V
Led indicators: red is charging, blue is full charged
Input interface: mini USB
Work temperature: -10䋀 to +85䋀
Inverse polarity: NO
Weight: 5g
Size: åÊ25 x 19 x 10mm