I don't think I ever got around to posting this up here... from the Hasbro Booster Card listing site, these are the 40 character cards and 81 battle cards you can get in the booster packs (below that is the contents of the Starter pack, and the Metroplex pack - the SDCC exclusive pack is not listed).

Character Cards

Super Rare
Bumblebee // Legendary Warrior
Nemesis Prime // Dark Clone

Rare
Arcee // Skilled Fighter
Autobot Cosmos // Recon & Communication
Chromia // Special Ops
Darkmount // Cruel Overlord
Decepticon Shockwave // Cybertron Commander
Grimlock // Dinobot Leader
Insecticon Skrapnel // Insecticon Leader
Megatron // Living Weapon
Optimus Prime // Battlefield Legend
Sunstorm // Fusion Flyer

Uncommon
Autobot Jazz // Special Ops
Autobot Mirage // Lone Wolf
Chop Shop // Sneaky Insecticon
Deadlock // Bounty Hunter
Demolisher // Devoted Decepticon
Dinobot Sludge // Mighty Stomper
Dinobot Snarl // Desert Warrior
Inferno // Fearless Firefighter
Jetfire // Air Guardian
Kickback // Cunning Insecticon
Prowl // Military Strategist
Ransack // Insecticon Commando
Skywarp // Sneaky Prankster
Starscream // Air Commander
Thundercracker // Mach Warrior
Wheeljack // Weapons Inventor

Common
Autobot Hound // Long-Range Scout
Barrage // Merciless Insecticon
Bombshell // Insecticon Mind-Controller
Bumblebee // Courageous Scout
Dinobot Slug // Hot-Headed Warrior
Dinobot Swoop // Fearsome Flyer
Flamewar // Veteran Decepticon
Megatron // Decepticon Leader
Optimus Prime // Freedom Fighter
Ramjet // Sky Smasher
Sergeant Kup // Veteran Sergeant
Starscream // Scheming Second-in-Command

Battle Cards

Rare
Agility of Bumblebee
Bombing Run
Cargo Trailer
Combat Training
Cybertonium Bow
Data Bank
Dino-Chomp!
Energon Axe
Fusion Cannon of Megatron
Heroism
Hunker Down
I Still Function!
Ion Blaster of Optimus Prime
Matrix of Leadership
Null-Ray of Starscream
One Shall Stand, One Shall Fall
Peace through Tyranny
Photon Bomb
Roll Out!
Salvage for Parts
Security Checkpoint
Shock Absorbers
Start Your Engines
Static Laser of Ironhide
Swap Parts
Swarm!
System Reboot
Team-Up Tactics
The Bigger They Are
Thermal Weaponry

Uncommon
Aerial Recon
Armed Hovercraft
Backup Plan
Blast Shield
Body Armor
Bug Bomb
Collateral Damage
Computer Sabotage
Crushing Treads
Debilitating Crystal
Disarm
Disruption
Disruptive Entrance
Emergency Maintenance
Equipment Enthusiast
Grenade Launcher
Jaws of Steel
Multi-Mission Gear
Multi-Tool
Plasma Burst
Power Sword
Ramming Speed
Rapid Ascent
Strafing Run
Swap Missions
Treasure Hunt
Turbo Boosters

Common
Armored Plating
Battle Ready
Brainstorm
Crushing Size
Data Pad
Drill Arms
Flamethrower
Force Field
Handheld Blaster
Improvised Shield
Incoming Transmission
Inspiring Leadership
Leap into Battle
Medic!
New Designs
Piercing Blaster
Primary Laser
Rapid Conversion
Ready for Action
Reinforced Plating
Repair Bay
Scrapper Gauntlets
Supercharge
Zap

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Starter Pack

Character Cards
Optimus Prime // Autobot Leader
Bumblebee // Brave Warrior
Ironhide // Veteran Autobot
Red Alert // Security Chief

Battle Cards
2 Armored Plating
2 Data Pad
2 Debilitating Crystal
2 Flamethrower
2 Grenade Launcher
2 Handheld Blaster
2 Improvised Shield
2 Incoming Transmission
2 Inspiring Leadership
2 Leap into Battle
2 New Designs
2 Piercing Blaster
2 Plasma Burst
2 Primary Laser
2 Ramming Speed
2 Rapid Ascent
2 Rapid Conversion
2 Ready for Action
2 Repair Bay
2 Team-Up Tactics

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Metroplex Pack

Character Cards
Metroplex // Autobot City
Scamper // City Patrol
Six-Gun // Heavy Weapons Expert
Slammer // Combat Drone*
*SLAMMER is a drone, so it doesn’t flip between modes like other character cards.

Battle Cards
3 Armored Plating
3 Backup Plan
2 Combat Training
2 Data Pad
3 Flamethrower
3 Force Field
3 Handheld Blaster
3 Height Advantage
3 Improvised Shield
3 Inspiring Leadership
3 Protected By Metroplex
3 Rally the City
3 Rapid Conversion
3 Supercharge