Ohh could you provide some clarity?That's not how you supposed to measure resistance![]()
Ah ok, didn't know that. Isn't a range / accuracy issue? Does it mean absolutely nothing?You can't measure battery impedance with regular multi meter. You need special battery impedance tester for that.
IR testers apply a known load during measurement. It's a dark art. Even with the correct equipment, results are not directly comparable between different equipment and methodologies.Ah ok, didn't know that. Isn't a range / accuracy issue? Does it mean absolutely nothing?
Would be nice if they gave a test sheet for the batteries with the results of their testingIR testers apply a known load during measurement. It's a dark art. Even with the correct equipment, results are not directly comparable between different equipment and methodologies.
Factories have advanced equipment and then run the same exact test on different cells and then their results are useful, because the test equipment and methodology is a controlled factor.
18650 provides test reports I thought. But who can trust a spreadsheet anyway. Buy from a reputable seller, which you did, check your QR codes aren't sanded, which they're probably not, then build and see how many kwh's you get. That's the test, build it and use it.Would be nice if they gave a test sheet for the batteries with the results of their testing
What are you worried about ?Would be nice if they gave a test sheet for the batteries with the results of their testing
This would be also my recommendation. Start with some theory before going much further with your build. Huge lithium batteries are not the best starting point to beginner, some precaution is recommended.Just FYI
Please take some time to read over the many tutorials building your batteries. There is many things your going to need to do to be successful.