[shakna]

A Pi on a 3.7v, with touchscreen and keyboard... In my experience that is in the range of 4-6 hours.

Though, considering all the model 100s I keep staring at are in the range of $600-1000, tradeoff seems acceptable.

[xgulfie]

They are sub-200 on eBay

[shakna]

If you want parts, sure. If you want a working one, not so much.