To maintain my rechargeable battery's life, should I drain it before recharging?

Hello beautiful people!

I've been having a curious question in my mind lately. It's this: For my rechargeable toy, should I be draining the battery fully before recharging it? I understand that for some kinds of batteries, this will help to maintain the length of time the battery will hold a charge for in the long run.

I have the Mystic Wand rechargeable...