The most suitable batteries for 4x5V motors 1.2A

In summary, the most suitable batteries for 4x5V motors with a 1.2A rating are rechargeable lithium-ion batteries with a capacity of at least 2000mAh. These batteries provide enough power for the motors to run efficiently and can be easily recharged for repeated use. It is important to choose a high-quality battery from a reputable brand to ensure reliable performance and avoid potential safety hazards. Additionally, the size and weight of the battery should be considered when choosing the most suitable option for your specific needs.
  • #1
=SJ=
30
0
Hello,

I'm looking for rechargeable batteries for 4x 5V motors of nominal current draw 1.2A and peak current up to 3A to power my robot.
I'm wondering about http://www.ebay.com/itm/2x-3-7V-18650-UltraFire-Li-ion-6800mAh-Red-Rechargeable-Battery-for-LED-Torch-/111653427442?pt=LH_DefaultDomain_0&hash=item19ff1018f2, http://www.ebay.com/itm/6x-AA-3000mAh-1-2-V-Ni-MH-rechargeable-battery-BTY-cell-for-MP3-RC-Toys-Camera-/200859881013?pt=LH_DefaultDomain_15&hash=item2ec42e8e35 batteries or http://www.ebay.com/itm/3-7V-6000-mAh-Polymer-replacement-Lipo-Li-battery-For-GPS-ipod-Tablet-PC-3691155-/181640906205?pt=LH_DefaultDomain_3&hash=item2a4aa445dd batteries.
It should be price friendly.
What is you opinion?
 
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  • #2
What sort of motors? Are they servo motors that have electronics in them that needs 5V ?
 
  • #4
Do you have a charger already? What can it do?
 
  • #5
They are PWM controlled mitors of my robot rover. I already have this simple linear charger: http://m.ebay.com/itm/5V-Mini-USB-1A-TP4056-Lithium-Battery-Charging-Board-Linear-Charger-Module-Cute-/331434903432?nav=SEARCH
 
  • #6
=SJ= said:
They are PWM controlled mitors of my robot rover.

Ok what voltage does the PWM controller need?

That charger board will only charge one Lipo cell at upto 1A. (It won't charge NiMH cells). If you plan on using two Lipo cells in series you will have to reconfigure them for charging.

You can get this to work but I hesitate to give advice as messing with li batteries can be dangerous if you don't know what you are doing.
 
  • #8
What I would do is join the forum at the top of this page..

http://www.dfrobot.com/index.php?route=product/product&product_id=97#.VaPesmdRHmR

On the "shipping list" and in this vid ...

https://opensourcehardwaregroup.com/assemble-dfrobot-pirate-4wd-mobile-platform/

..they mention a 5 * AA cell holder so it looks like the platform is designed for 5 NiMh cells (5 * 1.2V = 6V) or 5 Alkaline Cells (5 * 1.5V = 7.5V).

I think I would start with the recommended battery holder and 5 AA rechargeable NiMH cells as they are easy to charge, safe and reasonably cheap. If you want more capacity (more run time) ask on one of the forums what others are using. They probably use 2 Lipo cells (2 * 3.7V = 7.4V). However the wiring will need to be modified to suit your charger. The one you mentioned is for a single cell not two in series.

Also mentioned on the shipping list is a "PH-2.0 to DC-2.2 adapter". I don't know what that is but it sounds like might be some sort of DC-DC Voltage converter. You might want to ask on their forum what that is for.
 
  • #9
I was wondering about NiMH at the first time but I was advised that my current draw is 0.8C whilst normall battery likes up to 0.2C. At the moment I use Alkaline cells but it is depleted within unreasonably short period of time. On the other hand Lipo seems me as overkill for my project.
 

What are the most suitable batteries for 4x5V motors 1.2A?

The most suitable batteries for 4x5V motors 1.2A would be 4 AA batteries in series. This would provide a total voltage of 6V and a current of 1.2A, which is enough to power all four motors simultaneously.

Can I use a single battery for all four motors?

No, it is not recommended to use a single battery for all four motors. Each motor requires a minimum voltage of 5V and a current of 1.2A, which would exceed the capacity of a single battery. Using multiple batteries in series or parallel is a safer and more efficient option.

What is the maximum voltage and current that the motors can handle?

The maximum voltage and current that the motors can handle depend on the specific model of the motor. It is important to check the datasheet or specifications of the motor to ensure that the voltage and current do not exceed its limits. In general, 5V and 1.2A is a safe range for most motors.

Can I use rechargeable batteries for the motors?

Yes, you can use rechargeable batteries for the motors as long as they meet the voltage and current requirements. Keep in mind that rechargeable batteries typically have a lower voltage than non-rechargeable batteries, so you may need to use more batteries in series to reach the necessary voltage.

What is the estimated battery life for the motors?

The estimated battery life for the motors will depend on the capacity of the batteries, the ampere-hour rating, and the efficiency of the motors. It is recommended to use high-quality batteries with a higher capacity to extend the battery life. Additionally, using a motor controller or PWM (pulse width modulation) can also help reduce power consumption and prolong the battery life.

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