Thanks to photos snapped of the upcoming Nexus 5’s battery, it looks to be confirmed that it will have a capacity of 2300mAh. It has previously been rumoured around the internets that the 16GB model — expected to cost $400 — will have the 2300mAh battery whilst the 32GB variant — expected to cost $450-$500 — was said to feature a 3000mAh. Since there have been no leaks or solid sources of that information, it’s looking less likely by the day.
The Nexus 5 is rumoured to be announced by Google on October 31st with a global launch in the week after. Expect waiting times of up to two or three weeks if you don’t get in fast, though.