Batteries do not have an infinite life span and believe it or not, they cost money. Especially small, rechargeable ones. Giving them away would hurt the company itself, why on earth you would want that is beyond me. If you don't want to sacrifice some money for a battery for an amazing headset, then get the A40s. I have had both headsets, they are both amazing, well worth the money.
Astro A40 2013 Edition in Black with Mixamp Pro - Astro Scout Backpack - Hauppauge HD PVR2 Gaming Edition - Gears of War 3 Limited Edition Xbox 360 - PS3 Slim - XBL GT: JoKeRs FuRy - PSN ID: JoKeRs_FuRy - PC Specs: Intel Core i5 3.0 GHz CPU, Corsair 750W PSU, Corsair 8GB Memory, EVGA GTX 660 FTW S2 Edition Video Card, inside an Antec 1200 V3 Case