6s 5000 lipo. id look for the highest voltage possible in a psu

http://www.progressiverc.com/iota-dl...er-supply.html

http://www.amainhobbies.com/product_...y-27V-20A-550W

dont fall for 30 amp or 40 amp power supplies with that charger it adds price to the psu and the charger wont use it (unless you want expansion in the future for a bigger charger)