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Replac my phone battery with a new one but during the process of removing the battery accidently scratch a small hole on the battery. Little smoke came out and stopped and theres an ordor coming out of the battery. Im I safe to through it at a trash or is there an other way of disposing it??

Batteries are flammable so if it was smoking or has a sweet odor I would dispose of it carefully. Most recycling places should be able to help with disposing of it properly Here is a link with some info https://www.call2recycle.org/lithiumion-