I am currently working on a humanoid robot and am trying to ruduce the weight and increase the opperateing time I am useing 4 AA batterys to power the top half 12 servos and another 4AA batterys to power the bottom half 10 servos 22 servos in total . The AA batterys tend to go flat quite quickly and haveing 8 AA batterys make the robot heavyer also if i could recharge the battery it would be a great help. the servos are rated at 6v maximum and 4.5v minium what would you recommend ?
Any help is greatly appreciated.