[citation][nom]vanwazltoff[/nom]thats a small battery. i think the best low end phones on the market right now are the LG L9 for Tmo [the only bad thing on the whole device is the camera] and the HTC Evo V on Virgin[/citation]This isn't aimed at the US market. This is primarily for developing countries. Zack could have made this a bit more clear. Most people here get subsidised phones, so for example you can get a Lumia 822 for $50 (less if you get it through Amazon).
Anyway, with the very low-power processor and smaller screen, the 1300mAh battery is probably sufficient. I'd be interested to see how WP8 performs on the lesser hardware, just out of curiousity.