I am trying to order a plane from Amazon and they are good at listing the plane and what it has but they rarely ever recommend the battery size of a plane that does not come with a tx,rec,or charger. Most people I know like to use Lipo batteries but I have some new nicad and nmhi that I never used and would like to know how to determine if given the size of the motor and ESC what size battery I should be installing. Can anyone suggest a site to check our or your method of determining this? Presently a plane I am looking at has this motor and ESC size Motor: Brushless 4023/1050KV; ESC: Brushless 40A ESC. Also what does the 4023 represent?