Cheap Batteries: X-ray CT Scan Reveals Shocking Defects

Lumafield used X-ray CT scanning to analyze over 1,000 lithium-ion batteries, revealing dangerous manufacturing defects in low-cost and counterfeit batteries sold on platforms like Amazon and Temu. A defect called 'negative anode overhang' significantly increases the risk of fire and short circuits. While name-brand batteries from Samsung and Panasonic showed no issues, low-cost batteries had an 8% defect rate, with some counterfeit brands exceeding 15%. This highlights the risks of prioritizing price over safety when purchasing batteries for devices.