Zketech EBC-A40L Battery tester/charger

hotrod

Solar Enthusiast
Joined
May 12, 2020
Messages
102

Hi I have purchased a new Zketech Ebc-A40L battery charger/tester and I am already having a issue with this charger. I have tried to contact the company (Zketech) through their email on there web site 3 or 4 different times about my problem and they have not responded back to me one time. They do not list a phone number so I can't call them. I have the warranty card that came with my charger but it is in Chinese so I can't send it in. I purchased this charger from a vendor on Aliexpress back at the end of September and after it arrived I had to wait till my 32 Eve 304ah cells arrived from China, I started using the charger about the end of October and after I charged the 10th cell up to 3.5 volts at 30 amp charge trying to get them all ready for a top balance and then start testing . I disconnected the charger and connected it to the 11th cell to start charging when I turned the charger on and started the charge after about 2 minutes I started smelling something getting hot so I started feeling of the wires from the charger to the battery and they were getting pretty hot so I shut everything down disconnected it and let it sit for about 5 minutes I hooked everything back up and put a clamp amp meter on the positive wire coming from the charger to the battery and when I turned it on the amp meter showed 71 amps going to the battery and yes the wires started getting hot again. How does a 40 amp charger all at a sudden start charging at over 70 amps. Now when I turn the charger on without it connected to a battery it shows 36.7 amps on the display and it should be showing 0 amps. Do any of you have any way you can help me get this charger repaired or warrantied. I would greatly appreciate your help if there is something you can do to help me. Thanks​

 

Horsefly

Photon Sorcerer
Joined
Dec 12, 2020
Messages
1,052
Location
Denver, mostly
I assume you mean the ECB-A40L (vs the EBC-A40L you said). I have the ECB-A40L and it has worked fine for me. Have you checked the cell (the 11th one) to make sure it is not shorted or dead? I'm not sure why it would go to 71A.

I don't really have any suggestion, but I will say that I had a problem with a cheap benchtop power supply that I bought on Amazon but was from China. Amazon wouldn't do anything but said I should work with the seller. I tried several times to contact them like you did, and after a couple of weeks I gave up and bought a new power supply. Then out of the blue another 2-3 weeks later they contacted me and said that based on what I reported it sounded like the power supply failed, so they shipped me a new one. They didn't want the blown one back. My only point is that maybe it takes a while to get through their system and have take note.

Oh and by the way, I'd prefer if your post wasn't in bold and large font. Not a huge issue, but I almost decided not to read it.
 

hotrod

Solar Enthusiast
Joined
May 12, 2020
Messages
102
I assume you mean the ECB-A40L (vs the EBC-A40L you said). I have the ECB-A40L and it has worked fine for me. Have you checked the cell (the 11th one) to make sure it is not shorted or dead? I'm not sure why it would go to 71A.

I don't really have any suggestion, but I will say that I had a problem with a cheap benchtop power supply that I bought on Amazon but was from China. Amazon wouldn't do anything but said I should work with the seller. I tried several times to contact them like you did, and after a couple of weeks I gave up and bought a new power supply. Then out of the blue another 2-3 weeks later they contacted me and said that based on what I reported it sounded like the power supply failed, so they shipped me a new one. They didn't want the blown one back. My only point is that maybe it takes a while to get through their system and have take note.

Oh and by the way, I'd prefer if your post wasn't in bold and large font. Not a huge issue, but I almost decided not to read it.
Thanks for you reply Horsefly and the charger I have says it is a EBC-A40L and I do not have a shorted cell I have since purchased a second charger just like this one and it has been working perfectly. All cells have been charged to 3.5v and then top balanced to 3.65 v. I am now in the process of testing these massive cells. I am on the 7th cell so far and the second charger is working perfectly. The first charger has a issue and I'm just looking for someone that can help me get it repaired or replaced. As you know these chargers are not cheap knock offs.
 

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