[sparrish]

I read the article... did I miss it? I still have no idea how to spot a counterfeit lith-ion battery without a CT scanner.

[butvacuum]

Looks like it was half written.

But, step #1 is pull up it's spec sheet and replicate their capacity testing method. At least for single cells. For packs there's not much you can do but buy from trusted places- manufacturer, bhphoto (for cameras).

18650batterystore has always been good to me, at least for the 300 Samsung 25R's I bought.

[BandButcher]

yea they note nothing can be verified visually but one option is to verify the part/mfg #,

“For most of these products, they are sold with part numbers that show an equivalency to a manufacturer’s part number."

Doubt i'd do that, would probably just source from name brands.

[pulvinar]

"One test, called a destructive physical analysis, involved dismantling small cylindrical batteries. This immediately revealed differences in quality."

[BandButcher]

hulk smash!