Ok, we understand that you are using a 5.5g 80gb, thick back plate model.
There is a 1900mah battery that sells on ebay, I will get the link for it in a
moment here, but as the other poster had mentioned, that it might not fit
with the adapter you are using. Do you have a pic that you can post of
the adapter with sd card mounted to it. When you say iFlash, are you
referring to a tarken adapter board ? If so, I have one of those adapters
with a thick back plate and also the battery, I will check to see if it will
possibly fit this 1900mah battery, which I have one of:
http://www.ebay.com/itm/high-capaci...371?pt=LH_DefaultDomain_0&hash=item2a49d11fd3