ZKE Tech EBD-M05 help

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HenrysCat
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ZKE Tech EBD-M05 help

Hi all, just got one these below and starting to have play and run in to a problem, not sure if it's me doing something wrong or I am just reading it wrong but perhaps you can help.

 

 

It is connected to a 4 wire battery holder as below, A+ to A+, A- to A-, V+ to V+, V- to V-

 

 

But I am not getting any current reading, always at 0.000A ?

Any ideas what I am doing wrong here?

Thanks

 

 

 

HenrysCat
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Solved it after an hour of head scratching, just in case anyone is wondering, I did not have the battery rack pushed up tight, the little gold pin measures voltage and the silver outer measures current, they both need to connect, I will now order a better quality rack laughing

HenrysCat
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Has anyone here got one of these? it's supposed to go up to 5A, but I can't get it to draw more than about 2.5A, I tested my best battery, a fully charged Sofirn 26650, and I have also calibrated the unit.

Barkuti
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Hello!

Remembering past comments of yours concerning the EBD-M05 device HenrysCat, I came here to ask if it supports fully customizable testing voltage range. This means, is it possible to obtain a discharge graph from and to, let's say 3.7 to 3.0 volts?

Guess you finally solved the “no more than 2.5 A discharge” problem. What was it?

Yes, I'm at the verge of getting one. 

HenrysCat
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Yes you can as screenshot,

https://i.imgrpost.com/imgr/2019/12/02/EBTester.png

The 2.5A problem is due to USB ports only being able to deliver 2.5A so if I want more than that, I have use a 5A USB hub to boost the power.

I think for the price you can't go wrong Wink

 

One other I should mention is the fan is very noisy and mine failed after a few days, so I replaced it with a GDT4010S12B you can buy just about anywhere, got mine from eBay.

Barkuti
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Thanks for pinpointing the fan issue thing, will add some replacement unit(s) Wink to my cart. Will it fit a 40x40x15 mm? 

Concerning the 5A USB limitation, can't see what is the point or reason right now, the current between meter and holder goes via a wire LoL.

Thanks.

HenrysCat
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Im surprised you said that given some of the useful knowledge you share here, it’s a constant current load tester, the load will sink the programmed current independently from the output voltage which is typically forced by the voltage source connected to it (for example a battery)

http://literature.cdn.keysight.com/litweb/pdf/5992-3625EN.pdf

Barkuti
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I don't have an EBD-M05 in my hands, don't be surprised. Since the USB port is for it to connect to the computer, why does it need to carry 5A of current? It is nonsense.

HenrysCat
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The USB is for power and data to pc, I did explain it and that pdf goes in to detail, if you read my post and pdf it makes perfect sense.

You can plug the device in to a power bank and test with out pc also.

Barkuti
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HenrysCat wrote:

The USB is for power and data to pc, …

Still, I don't see why does the device needs two USB connections or a hub for additional power unless it is particularly very power hungry. Maximum USB2.0 current is 500 mA (≈ 2.5 W) per port with power negotiation, or 100 mA (≈ 0.5 W) without it.