Li-ion charger

anyone know how to or what i need to buy to make a Li-ion charger? i need it for 18650 batteries

cminke:
anyone know how to or what i need to buy to make a Li-ion charger? i need it for 18650 batteries

There is the LTC4056 Li-ion charger chip: http://www.linear.com/product/LTC4056-4.2