Berserker Try a HDMI Audio Extractor Splitter, HDMI in to HDMI SPDIF Optical L. R. Audio, if your using it with a PS4 or something

Berserker The word

Ballard Another thing to consider in why the battery does not come with the kit is that there is so much variation in the types and sizes of batteries to choose from. Maybe you want a back rack mounted battery or a bottle style battery or you are only making short trips and don't want to pay more for extra amp hours you don't need. This is the same reason when you buy a pair of pants they don't throw in any old pair of shoes, how do they know how big your feet are, maybe you are just a flip flop type of person?

Ballard This is a gearless hub motor as opposed to a cassette version (cluster of sprockets within the hub). For more information on the differences check out http://www.ebikeschool.com/geared-hub-motors-vs-gearless-hub-motors/

Ballard For LiFePO4 (Lithium Iron Phosphate) I would recommend pingbattery.com, for Li-ion try www.dhgate.com

Ballard Looks like 1 is rear wheel because of the gears and 2 looks like a front wheel mounted hub.