I’m am wondering how to choose the correct battery size and type for my robot.
Here are the specs:
it is a two wheeled robot and uses to CIM motors
it must be able to drive for 45 min on one battery charge
the robot needs to carry a payload of 50lbs
Would a 12V 17Ah battery be enough for this robot?
Thanks for the help!
from what i know about batteries, i rekon that should be ok …
just use the standard First robotics battery
use a high capacity lipo (lithium polymer). like a 3 or 4 cell 10,ooo mAh size.
To answer this question you need to know how much average current your motors will draw.
There are a couple different ways to calculate/measure average current.
- Power graph of a motor based on your torque / speed setting
- Use a multi-meter to measure current draw from your battery source
(be careful to only use one motor at a time to avoid blowing the Fuse in your multimeter)
Once you know that your robot draws 15Amps per Hour (15Ah)
Then a 17Ah 12 Volt battery should definitely last your robot 1 hour of run time.