ZOHD 4S1P Lionpack 3500mAH Lithium Ion battery pack. Max current 10A, perfect for the Nano Talon Evo. 1hr flight time is possible with throttle management. In this flight I used 1000mAH over 19min without trying to conserve power.
Check the ZOHD link for all the specs, including the 2S version
Ok, so I am going to take one last jaunt into the 3D printing arena here in association with Eclipson Airplanes regarding finding the best material to print your aircraft