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Battery Capacity Tester

epc2012

New Member
Joined
Dec 7, 2023
Messages
4
Location
Pennsylvania, USA
I'd like to hear what you guys are using to do capacity load test on your batteries. I noticed in one of Will's recent videos that he used a West Mountain Radio tester and curious what the pros of that device are vs others you've used. I'd love to have something that can actually provide solid graphs vs my home rigged system now.
 
I'd like to hear what you guys are using to do capacity load test on your batteries. I noticed in one of Will's recent videos that he used a West Mountain Radio tester and curious what the pros of that device are vs others you've used. I'd love to have something that can actually provide solid graphs vs my home rigged system now.
most everyone is using the 40 amp ZKE tester. (ZKETech EBC-A40L Capacity Tester) that's what i used as well and it works. If you hook it up to a PC it can be setup to run a full cycle of charge, wait, discharge and the charge back to full again, or you can set it to charge wait discharge and then charge to 40% for storage. if not you need to manualy set it up and it will charge to your presets, then you need to reconfigure for discharge to your presets. its not that hard to use and at 250.00 it works. i tried different hall cells and shunts and in the end it was the easiest as it allows up to a 40 amp discharge or charge.
 
If you are looking to test individual cells, then @Daddy Tanuki ‘s suggestion looks pretty good. If you are really looking to test batteries as per the thread title, then I’m not sure what the options are. You are either going to need to dissipate a lot of power, or spend a lot of time to test a 14KW battery, for instance.
 
If you are looking to test individual cells, then @Daddy Tanuki ‘s suggestion looks pretty good. If you are really looking to test batteries as per the thread title, then I’m not sure what the options are. You are either going to need to dissipate a lot of power, or spend a lot of time to test a 14KW battery, for instance.
yeah if you are doing a complete battery I simply used a shunt based monitor (bogart) and my inverter. used four 1200 watt hairdriers to load up the inverter to make it really draw some power.
 
I've had a lot of capacity testers, and still use quite a few. But I would stick with cbaiv but get the 100V model. I just spent $3000 on their new amplifier capacity tester. The other testers will eventually break. Unless you use just a basic shunt. Those are fine as well. But cba IV is easier to log and graph the data.

Latest model cba is the cba V. But cba IV works great too.
 
What I love about cba is I can run a long USB extension cord over to heavy batteries. It's super slow with one unit, but if I have multiple projects going, it will finish eventually. And just one small cable from my laptop.
Nice!


55V, 40A, 150W for $190-ish (on backorder). Only 4 days to test an EG4 Wallmount. 🤓
 
Nice!


55V, 40A, 150W for $190-ish (on backorder). Only 4 days to test an EG4 Wallmount. 🤓
Yes exactly, that's how long it took me to test that battery and did so multiple times and separate test for indoor and outdoor model 😂 I have a file for every battery just in case
 
Nice!


55V, 40A, 150W for $190-ish (on backorder). Only 4 days to test an EG4 Wallmount. 🤓
I would still get the 100V one though, I killed one cba because it was 55v model and I charged to a little over that. Instantly fried
 
I would still get the 100V one though, I killed one cba because it was 55v model and I charged to a little over that. Instantly fried
This is good to know. My primary goal is to find a better way to test AGM/Sealed batteries to just determine overall capacity health. A lot of my older clients have flooded or AGMs and they're slowly reaching their end of life on those systems. So I'm typically dealing with batteries in the 1kW to 3kW range. My traditional method has just been using known loads and taking multiple measurements but having something that can handle the test for me is ideal.
 
I am afraid to test my battery. Right now I think is wonderful. If I test it and it reads out at 93% capacity it will really piss me off :LOL:

Ignorance is bliss
1729099372630.png


In reality I use the Victron Smart Shunt and Solar Assistant and run them down running refridgerators. Not to scientific but happy wen they get to 82% I only run them down to 18% SOC
 
I am afraid to test my battery. Right now I think is wonderful. If I test it and it reads out at 93% capacity it will really piss me off :LOL:

Ignorance is bliss
View attachment 250285


In reality I use the Victron Smart Shunt and Solar Assistant and run them down running refridgerators. Not to scientific but happy wen they get to 82% I only run them down to 18% SOC
Don't think of it like that! 🤣 If it's lost capacity, you get a new one with most warranties! And I doubt it's degraded much. I think you'll be fine
 
Does anyone have any budget recommendations for a logging, graphing tester? I have just one battery and suspect one cell is underperforming, so after running tests on the 4 cells I wouldn't really need the device, except for maybe maintenance once in a while. I did try going budget with the ZKETECH EBD-M05, but on a 200mah battery cell it would take upwards of 40 hours, which would cause weird software glitches.
 
Don't think of it like that! 🤣 If it's lost capacity, you get a new one with most warranties! And I doubt it's degraded much. I think you'll be fine
Ha ha ha you want to load a battery bank down.... get a centrifuge to clean waste oil with (or centrifuge canabis to make CBD oil with)
I found out rather quickly that a 70kw battery bank was not nearly as large as I thought it was.
 
For lower watt-hr capacity cells/batteries, ie less than 2000 w-hr this is a low cost, non datalogger device.
I used to have one of those type of testers. They scare me to use quite honestly.

I've been eyeing up the West Mountain Radio gear for a year or so now but find it very difficult to spend that kind of money on a battery tester thus unlikely I'll ever pull that trigger.

There are a lot of electronic loads on eBay that can be used for battery testing. I picked up an Amrel 800W recently that I'm hoping to make use of with 12V batteries at least. It has an ethernet interface that you can send control commands to and pull voltage/current for data logging via basic telnet. Only downside is you still need a shunt for the actual metering.
 
I used to have one of those type of testers. They scare me to use quite honestly.

I've been eyeing up the West Mountain Radio gear for a year or so now but find it very difficult to spend that kind of money on a battery tester thus unlikely I'll ever pull that trigger.

There are a lot of electronic loads on eBay that can be used for battery testing. I picked up an Amrel 800W recently that I'm hoping to make use of with 12V batteries at least. It has an ethernet interface that you can send control commands to and pull voltage/current for data logging via basic telnet. Only downside is you still need a shunt for the actual metering.
why i use them all the time no issues that i can see. i actually just bought a 600watt 40 amp version.
 
why i use them all the time no issues that i can see. i actually just bought a 600watt 40 amp version.
Where can I find it? I’d like to run a little higher current load than the 150watt version I mentioned earlier.
 
I have a DL24P from when they first came out. It's not the fastest thing in the world, but it works great and definitely doesn't break the bank. I wouldn't rely on it for lab grade measurements, but it works fine for comparison and matching other cells using the same tester.

I tried the phone app one time, it was a while ago, but it was absolutely terrible (its definitely possible it's been updated, or at least I hope it has).That being said, the UI on the device itself isn't all that hard to figure out, and gives you all the data you really need for basic testing. I bought it for my batteries, but I find myself using it to test out different wall warts and USB chargers as well.
 
They look like cheap fire and I am paranoid lol. Not saying there's anything wrong with them.
you want me to make you a case? i get the bare board stuff is kind of unfinished looking, but they sell cases as well for them. They use mosfets and have temperature overheat protection (which i have tested over 100 times). I really am not super concerned. put them on or in a metal box and sleep safely, next to your large battery bank LOL
 

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