If you have multi meter and the voltage is at zero then it should be safe to recycle normally. If it's charged and swollen then it's a fire risk. Keep the battery in the phone and in a metal container until you know there is no energy left in the battery. A dead battery even swollen shouldn't be a fire risk.
If you have multi meter and the voltage is at zero then it should be safe to recycle normally. If it's charged and swollen then it's a fire risk. Keep the battery in the phone and in a metal container until you know there is no energy left in the battery. A dead battery even swollen shouldn't be a fire risk.