Have you seen this type of counterfeit 18650 battery before? UltraFire

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UltraFire Batts meet OPUS meet pellet gun -Teardown photos added to OP

Been playing around with my new OPUS BT-C3100 charger. Thought I would test 5 UltraFire BRC 18650 3000mAh (cough…cough) batteries I had laying around. I have never used them. They came with some C8s I received a few months ago. Figured they were crap, and decided to throw them on the charger and confirm. Here are a couple pics of the batteries: [image] [image] Capacity test results: Battery #1: Null (completely dead) Battery #2: 185mAh Battery #3: 290mAh Battery #4: 293mAh Battery #5: 30…