Sellers who attempt to convert a listing to Fulfillment by Amazon (FBA) need to provide information on any products that are batteries, contain or are sold with batteries, or may be considered dangerous goods (also called hazardous materials or Hazmat).
For batteries and products containing or sold with batteries. Sellers must provide descriptive characteristics such as battery composition (e.g., lithium ion, alkaline, etc.) and the number of batteries.
For products considered dangerous goods. Sellers must provide information to identify characteristics of the product such as flammability or corrosiveness that would indicate the transportation classification (UN Number).
For instructions about submitting battery and dangerous goods information to Amazon before converting listings to FBA using Amazon MWS, see Step 1 - Create a listing and convert it to FBA.
If you have questions about implementing these new requirements, contact Amazon MWS (see the "Contact Amazon MWS" link on the Amazon MWS portal for your marketplace).