Power supply

Dear All,

I have a robot which consume 43.56W. I am looking for a power supply for it (battery).

Any recommend battery.

Actually every motor need 2.42W but I am using 18 motor therefore total power is 43.56W. Any recommended battery and battery connection.

Best regards,
HISMI

uaefame said:

Dear All,

I have a robot which consume 43.56W. I am looking for a power supply for it (battery).

Any recommend battery.

Actually every motor need 2.42W but I am using 18 motor therefore total power is 43.56W. Any recommended battery and battery connection.

Best regards,
HISMI

Click to expand...

hi Hesham,
We need to know the voltage of this 44Watt psu.??

2A on 24V .. you can get that from lead-acid batteries... I assume you will not run all motors all the time, but note that lead-acid ones are heavy. You can find li-io battery pack (26V) that can output 1.8A-2A but that is going to be rather expensive.

If you go for lower voltage you need more current for the same wattage and that's much more problematic / expensive.

The cheapest way -> 2x car battery, but that is *heavy*
SLA is lighter but with less "punch"
LiIo is the best choice but expeeeeeeensive

Note that rating for lead acid changes for different discharge currents, so 10Ah battery will work ~20 hours at 0.5A, 8h at 1A, ~3H at 2A and less then 20min at 10A

It's a very confusing post, but he has been asking about servos for weeks now - so presumably it's power for 18 servos he needs, and not 18 motors.

In which case it's 4.8V or so he wants.

Bare servos without some very fancy gear reduction will not be able to lift the weight of heavy batteries.

blueroomelectronics said:

Bare servos without some very fancy gear reduction will not be able to lift the weight of heavy batteries.

Click to expand...

RC servo's have pretty fancy gear reduction, it's what gives them their huge power to weight ratio - four NimH should be fine, AA's may be enough for short usages, but C or D may be required.

With all that weight on the robot, it may be good just as a doorstop!
An easy solution would be a stand-alone battery pack separate from the robot, much like portable test equipment ( meter, scope, recorder, etc.).

What are all those motors doing?

Are all moving this thing along?

It's better to use a smaller number of larger motors as small motors are less efficient.

The OP is building his version of a hexabot to solve a maze.**broken link removed**

Interesting replies, Ya I am building a hexpod robot to finish a maze. I will post my robot soon It's not that nice looking as bill showed. For the voltage it requires 6V. and Ya It is a servo motor.

Yes Hero999, I need all of them to be working in the same time to maintain certain position.