am suprised avery time ,howmany possebility's there are. so the adaptor is just enough for jd then.

@nomad18.08.... A good battery is the best way to power JD or any other multi servo robot....

RR so cant use adaptor insteadt off a batt.

Yes, but a battery is still best...

You can use an adapter or a battery.

The 25c or 35c tells you how many amps can safely be pulled from the battery at one time. If the battery is a 1.3 amp per hour battery or 1300mah battery, you could safely pull about 30 amps at one time. That is a huge amount.

If you want to use a power supply while programming movements, it will prevent you from having to charge the battery every few minutes if you are pulling this many amps.

The concern is that you have to have a power supply that produces enough amps for all of the load you will be using. The fuse in the base is a 20 amp fuse, so theoretically that would be the max you can pull.

The other thing to understand is that the motors will draw current when holding a motor or moving a motor. It's not as simple as just adding up values, but also taking into account bursts of electricity.

thank you bolt D.cohran&RR

I would connect the servos/motors to a sufficient battery power supply and connect only the signal wires to the EZB-v4. Connect a ground wire from the batteries to the EZB-v4. Then you will have all the power you need and you won't overload the v4.

That is what I do mainly because my bot uses servos that are 3.3v, 5v, 6v, 7.4v servos. It also allowed me to divide out how amps are drawn also as mentioned by Bhouston. So many ways of running power. just spend some time researching how DC power works for a bit.