1.) Ship only one chemistry of battery per box, you can not mix NiCd batteries and Sealed Lead Acid batteries in the same box.
2.) Make sure to fully discharge batteries before shipping.
3.) If shipping more than one battery, package the batteries in a manner such that they will not make contact during shipping. This is to include taping the contacts of the batteries, and providing enough packing material to adequately separate the batteries.
4.) Ship freight prepaid to:
Alkaline/Silver Oxide/Zinc-Air/Zinc-Carbon
These battery types can typically be disposed of by your local waste management organization.