WHERE CAN I FIND IPHONE 2G BATTERY REPLACEMENT HERE IN THE PHILIPPINES?

i have a unlocked/jail damaged iphone 2g and the needs a replacement. where can i find a battery deputy for my iphone here in the Philippines when Globe Telecom(iphone’s central reseller) can’t do it since when iphone launch here they proceed with iphone 3g and they do not have a 2g iphone.where will i go?thnks.