Alright. I'm at the point were I need to purchase batteries for my robot (or lack there of.) But, first I must decide what my options are, so I have a few questions. I used the battery calculator here: http://www.societyofrobots.com/battery_calculator.shtml
(or at least tried to) but I need help selecting a battery rather than calculating how long it will last and things like that. I also read the battery tutorial here: http://www.societyofrobots.com/batteries.shtml
My question (which will help alleviate all of my other questions) is weather or not I should use different sources for my drive motors and my servos.
I have 2 drive motors (Solarbotic GM9s http://www.solarbotics.com/assets/datasheets/motor_data_summary-gm9.pdf
) which has an idle current draw of 52mA @ 6v and a stall current of 700mA @ 6v. Multiplied by 2 motors is idle: 104mA and stall: 1400mA.
I'm also using 2 servos (HiTec HS-311 http://www.makingthings.com/teleo/products/acc_datasheets/acc_srv_hs311.htm
) which has an idle current draw of 7.7mA @ 6v and a stall current of 180mA @ 6v. Multiplied by 2 servos is idle: 15.4mA and stall: 360mA.
If my math is correct, I need a 6v battery at ~2000mAh for ~1 hour of use... is this correct??
Note: I'm using a voltage regulator along with the batteries, and 2 tri-state switches with an SN754410 to drive the motors.