For a few bucks more you could get an Xtar MC2 for two slots (0.5A/0.5A) or a MC1 plus for a single slot @ 1 amp. I use MC2's. And they both will charge other li-ion battery sizes as well.
MC2,
SKU 2410700MC1,
SKU 2563900For something cheap and portable with multi use, I have these:
http://www.penguin.cz/~utx/hardware/Creatic_18650_Power_Bank/You can find them on the bay.
Edited on 9/2/2016 at 6:18 PM. Reason: