ORIGINAL: GLMS
The second option will cost more, I use two different Li-Po chargers that cost under $50, They serve double duty charging my flight packs for my planes as well as my car cells. One is from Turnigy Accucell-6 available through Hobbycity and the other is the Supermate 4 from Polks Hobby. Both are DC only chargers and require the use of a DC power supply.
Hope this helped......
What can I use for a power supply? I like that Turnigy.