Why I Use a Dedicated Four-Wire Internal Battery Resistance Tester — And Why You Should Too

Question: How many of you own items that use batteries? Looks like the response is “Everyone.” Now, how many of you use rechargeable batteries? Fewer, certainly, but still a decent amount. What if I told you that many of the rechargeable batteries out there don’t even come close to their advertised capacity or internal resistance claims?
The battery in the picture is testing fine, but if the battery you bought at the store or online wasn’t, you would probably never know it—other than noticing it performs poorly or dies early. If you are a casual consumer and not a tech hardware geek, you may not need a dedicated tester.
Conversely, you should definitely hop on the internet and research which battery brands actually perform as advertised. However, I do think everyone needs some type of basic battery tester. And for us geeks, you need a reliable way of verifying manufacturer claims.
Continue reading










