Battery for radio
 

I only found 1. Is there actully two of them or only one of them?

There are two.. keep looking

There are two in the main room where all the survivors are.

One is on the floor....

That was for me the hardest quest in the game!^^
But the woman is stupid and so I let she die...

One battery is on the shelve, the other is on the floor, both are in the main room.

the problem with this people are having is that the second battery on the floor doesn't appear at first, I forget which action triggers it to appear (I think it's when you come out of the office room after you put a bandaid on clementines finger), but you basically have to do everything you can inside of the store before the second battery appears.

Not true. Neither battery appears until after you talk to Carley about the radio the first time. Right after that, they are both available.

I missed the one on the floor.. :/ When she described the battery as being one of those "flat boxy types" I assumed it was a 9-volt and thought she only needed one of them. It made me think it was a glitch when I gave her the battery and kept acting like I was looking for one.

I'll try it out tomorrow.. thanks for the heads up.

Exactly!

I never did get the second battery. I actually forgot I was looking for them. I managed to finish the game anyway. Hope that doesn't matter in later episodes

Well, considering how even the most miniscule decisions made in this game just might cook something different in later episodes, if you do like Carly, I'd recommend helping her. Seems like it'll calm her nerves to know the fate and status of her colleagues..but that's just me. :P

Oh crap! I didn't pick up the second battery (on the floor)!