FAST Replacement batteries?

[Kaitlyn]

Okay so... I am going on a trip on the 28th and I will be bringing my camera. I'm having a problem with my batteries. It seems recently that they aren't able to hold a charge. They are both replacement batteries... I forget from where, but they were cheap and lasted much longer than the originals.

What can I do now? I don't wanna go out and buy a $50 original Canon, and I need an alternative by the 28th before I go. Any ideas?

Its an NB2L battery...

Edit: OR does anyone have any suggestions how I might "fix" or "improve" my current battteries? Frankly I'm quite surprised they don't hold a charge very well. On the other hand, it IS possible that the camera's battery sensor or something is wrong...

[Oversized Rooster]

Didn't batteries revive themselves when put in the freezer? Or was that only for a particular kind?

[Kaitlyn]

Didn't batteries revive themselves when put in the freezer? Or was that only for a particular kind?

As far as I'm aware that doesn't do much except slow down their "loss of charge rate"... and only works with alkaline.