Batteries - How much, What kind, From where?

[vampist]

First off, rechargeable please. Does not matter in the type "AA, AAA, etc".
But must be smaller than a car battery, please and thank you

What kind should I get for powering a robot? Specifically 3-12V DC motors.
As well as around 7.4 volts for microcontrollers and sensors.

I see there are a bunch of different kinds "Ni-MH", "Ni-CD", "Li-ion", etc..
Which is best for this situation? What are the differences.

What is the "going rate" per 1Ah?

Also I am looking for a single or at most two batteries. I don't want single AA batteries that I have to remove one by one and put into a charger.

Also where do you suggest I buy from? Do you have a particular store/website you know is good?

 

[63083]

Will any of these do? http://whiteselectronics.com/products/accessories/batteries.html

 

[vampist]

Thanks, 63083
Where some of those might do, I am looking for more of a guided answer
Also a lot of those were either non-rechargeable or just the actual holders.

 

[sniperviper21]

Lithium Ion Cells are the way to go for rechargeable.
Stamps dont use a lot of power at all, all my stamp run robots use just 4 regular AA alkaline batteries, or 5 AA rechargeable batteries.

the only difference in battery types is the chemicals that react in the batteries that create current. Alkaline's produce the most voltage.

and do you mean 12V DC voltages like what you use for those robotic arms?

http://wb5.itrademarket.com/pdimage/93/983493_mr999.arm.robot.jpg

later i can go more in depth when i find my notes from college on DC/AC power.


good place to get good batteries, but never personally bought from the site http://www.maxamps.com/?gclid=CPrehNPZ-J4CFWpd5QodhCLjJw

 

[root]

look for batteries for radio controlled cars.

 

[vampist]

Lithium Ion Cells are the way to go for rechargeable.
Stamps dont use a lot of power at all, all my stamp run robots use just 4 regular AA alkaline batteries, or 5 AA rechargeable batteries.

the only difference in battery types is the chemicals that react in the batteries that create current. Alkaline's produce the most voltage.

and do you mean 12V DC voltages like what you use for those robotic arms?

http://wb5.itrademarket.com/pdimage/93/983493_mr999.arm.robot.jpg

later i can go more in depth when i find my notes from college on DC/AC power.


good place to get good batteries, but never personally bought from the site http://www.maxamps.com/?gclid=CPrehNPZ-J4CFWpd5QodhCLjJw

Thank you for the information! Yes VDC, sorry I did not classify that.
As for the microcontrollers, I will be using a 7805 voltage regulator which requires 7VDC to maintain a steady 5VDC. I have thought about using a plain old 9V to power them, and save the battery for the motors.

@root: Thanks, I didn't even think of looking at them.

 

[63083]

http://www.arizonaoutback.com/minebatteries.html These are good batteries. Long battery life and super durable. You just need the outgoing connection to power devices if this would work.