Storage

• Store unused batteries in their original
  packaging and keep them away from metal
  objects which may short circuit them.
  
• Storing unpackaged cells together could
  result in cell shorting and heat build-up
  
• Store and display batteries in their original
  packaging in well ventilated, dry and cool
  conditions
  
• Avoid storing or display batteries in direct
  sun or in places where they get exposed to
  rain
  
• The normal storage of Lithium-ion Polymer
  Battery Pack is made at temperature between
  +10°C and +25°C, never exceeding +30°C
  In this way the maximum shelf-life (i.e. max
  retention of cell performances after storage
  periods) of Lithium-Ion-Battery Pack is
  achieved
  
• Storage temperatures above room
  temperature will increase the rate of selfdischarge,
  reducing the available capacity of
  the cell. Humidity above 95% R.H. and below
  40% R.H. should also be avoided for sustained
  periods, as these extremes are detrimental to
  batteries
  
• Storing the cells / batteries at low
  temperature is also suggested, but attention
  must be paid when transferring the cells
  to warmer environments, because of the
  possibility of having water condensing on to
  the cells (risk of short circuits)
• Do not stack battery cartons on top of
  each other exceeding a specified height. The
  height is clearly dependent on the strength
  of the packaging. As for general rule this
  height should not exceed 1.5 m for cardboard
  packages or 3 m for wooden cases. The
  above recommendations are equally valid for
  storage conditions during prolonged transit.
  Thus, batteries should be stored away from
  ship engines and not left for long periods
  in unventilated metal box cars (containers)
  during summer.