The proper way for disposing of and recycling used lithium ion batteries.

https://www.call2recycle.org/locator/

Many Home Depot and Lowes have a battery recycling box located near the entrance of the store.  You can use this tool to locate the nearest drop-off location.

Battery terminals must be protected
18650 recycle
When clear plastic bags are not available, you can tape eachbattery.
Do NOT use any of the following to protect battery terminals
18650 recycle
The recycled materials that come from batteries are used to manufacturenew products
Minimum Terminal Protection Guidelines for battery recycle