Asking chatgpt seems more useful than reading the article ;-) - Too light: Counterfeit batteries often weigh less because they use smaller or inferior cells.

Asking chatgpt seems more useful than reading the article ;-) - Too light: Counterfeit batteries often weigh less because they use smaller or inferior cells. - Overheating or fast discharge: Fake batteries often fail to hold charge properly and heat up quickly. - Use a charger to measure actual capacity. If it’s far below the claimed value, it’s fake. - Use a multimeter to check actual voltage. If it’s far off from the expected range (e.g., below 3.0V or above 4.2V per cell), the battery might be damaged or fake.