hi ricky ma

the adaptor is just for your batterie to charge.jd has a batt and runs on your wifi. do you have a blue metal case ?that came with the jd ?

@Nomad, @Ricky is not running a JD, and the adapter in the picture is not a battery charger, but a 6amp adapter (which would be fine for a few servos, but not sufficient to handle the inrush current from 8 servos).

As everyone else has said, need a 20 amp adapter.

Alan

che use the power chell? i didn know you may use the adator straight on power chell.

@Nomad, you can use a power supply (not a battery charger) directly with the power shell, or if you have a deans connector, directly to the EZ-B. See Steve's excellent tutorial https://synthiam.com/Tutorials/UserTutorials/163/1 (skip to step 7 if you just want to know what power supply to use, but the whole tutorial is worth reading)

Alan

i was just curious about this topic.i use the batt from here.

thanks for the link.

Hi Steve,

Thanks a lot your tutorial and I have reviewed. So, EZB4 maximum accept 7.4V 20amp adaptor. It is safety for using. But, EZB4 just give the current within 5V for servo or motor for 5-8pcs at the same time. It will still be restart again if use full servo (mean 24servo at sometime).

Therefore, don't use all heavy duty servo at same time with EZB4 or anyone have other solutions?

If yes, would anyone can help to suggest what model or brand of 7.4V 20amp adaptor?

thanks again Ricky Ma stress confused tired

@rickymahk2013 Look on eBay for a Meanwell power supply... They come in various voltages and amp output... I have a 60amp, 5V Meanwell that I use with my inMoov....

Or else just use a Lipo battery and be done with your power problems....

It's not so much that the EZ-B can take up to 7.4v (it can take up to 16v), but the 7.4v limit is for the servos connected to the EZ-B.

If you need multiple servos to move at the exact same time which would be in excess of 20 amps, you could bypass the EZ-B and connect the servo power wires directly to a 7.4v high amperage power supply (high amperage as in 30, 40 or 50 amps depending on how many servos you have, and there max current draw which you would need to add togeather to get your total current).