Lithium Ion

Do the lithium ion rechargeable batteries used on the Guardian Angel devices have a safety rating?

Yes. Each battery carries a UN38.3 safety materials rating.

How should I dispose of lithium ion batteries?

Lithium Ion batteries, like all rechargeable batteries, are recyclable. They should never be incinerated since they might explode. Most places that sell rechargeable batteries will also accept them back for recycling.