The largest of the Lumia family is finding it hard to hide ahead of its unveil, meaning more specs have leaked. The latest reveals that the Nokia Lumia 1520, with its 6-inch screen, will be packing in a 3400mAh battery to keep it lit up.

The battery news comes from wpcentral without an accredited source, so we're taking it with a side of salt. But that size seems right for a device as large as the 1520. By comparison the Note 3 will come with a 3200mAh battery and the LG Optimus G Pro sports a 3140mAh powerhouse.

The expected release date of November has been floating around on a few news blogs including phonearena. This later arrival makes sense after its announcement happens on 26 September, since Windows Phone GDR3 is still being finalised and won't be done by September.

And for those playing catch-up, the total expected specs look like this: a 6-in 1080 x 1920 display, Snapdragon 800 processor, 2GB RAM, 32GB onboard, microSD, a 20MP snapper and quad microphones.

That 20MP camera will work much like the 1020's snapper, capturing both a hi-res 16MP shot and a 5MP photo at the same time - ideal for fast sharing.