Single Sony VTC5 18650 Battery.

Packaged in a sturdy plastic case for safety.

• Lithium-Ion cells should be charged on a dedicated charger rated specifically for Lithium-Ion cells.
• Never leave a battery unattended whilst charging.
• Keep away from animals and children.
• Wraps and insulators should be periodically inspected for tears or damage. If a battery has a damaged wrap, it should be repaired or disposed of immediately. 
• If you are re-selling these cells, it is your duty to pass these warnings onto your customers.
• Batteries usually have a cycle life of between 200-500 cycles (varies with manufacturer) before noticeable capacity drop off. Batteries should be recycled at this time.
• Do not crush, incinerate, or modify.
• Only use within manufacturers specifications.