2 feet biped robot

i am intended to buy the biped kit from lynxmotion.com and add my own modifications like torso arms and camera…etc
how much weight can the biped brat and biped scout can lift can you please give me more detail description

regards,
max steel

besides its battery and controller, it can probably carry the weight of another battery, but it is not meant to be loaded too much. If you would like to add a torso and make a full humanoid, you will need to use stronger servos.