Erfolg Thanks for your reply, it has helped me to begin to understand as I am new to electric flight. So my 800 mah 20c LiPo has a discharge of 16A. My next problem is deciding on the size of battery for the electric shock flier, this needs to have enough power and be as light as possible, sounds like I am going to have a trade of somwere here. This choice is further complicated by the fact that all the jargon on the back is in German, unfortunatly not my strongest subject back at school. I'll list the details here just in case someone can help. Windungen 28 Spannung 7-12V (I think I get this one) Umdreh Pro Volt 1048 Innenwiderst 165 mOhm Leerlaufstrom 0,57A Stro beimax Wirk 3mm Freie Welle 10mm Durchm./Lange/Gew 28mm 26mm 43g Many thanks Keith