I'm a Bulbasaur, Lvl 17. My moves are Tackle, Vine Whip+4, Sleep Powder, and Leech Seed.
My partner's a Charmander, his moves are: Ember, Dig, Scratch, Metal Claw. Help please, I can't beat Moltres! Should I train until I can overpower him?
Put Moltres to sleep with Sleep Powder and set Charmander's tactics to only using Dig once the battle starts
No point using Leech life unless you want to do the extra damage, Moltres one shots both of you.
Keep Spamming Sleep powder in case Moltres doesn't attack and uses agility when it wakes up. Charmander's damage is all you need.