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Lithium ion batteries are not bad for the environment, except for normal mining impacts to land. You can throw lithium ion batteries away as they are safer than alkaline batteries.
The case for the danger of lithium ion batteries compared to gasoline is weak. They are orders of magnitude safer than gasoline, mostly because it isn't a tank of liquid and because there's a lot less energy contained within.
Storing nuclear fuel is not a problem. People like to say it could be a problem, but so could a meteorite headed for earth. It's that level of probability with way lower risks. If Nevada shakes to pieces due to an earthquake that results in loss of containment of nuclear fuel, the radiation in the remote storage location is the least of anyone's problems.
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