Fujitsu lifebook t4215 laptop battery tips :

• Do not short-circuit . A short-circuit may cause severe damage to your lifebook t4215 battery.
  
• Store it in a cool and dry place (The suitable temperature is about 15°C). Before storage, you should confirm your Fujitsu lifebook t4215 battery is not fully depleted. If empty, charge for about 30 minutes.
  
• Usually a lithium-ion battery should be stored at about 40% state-of-charge, because laptop battery's self discharge can break the battery in the storage.
  
• Please take out the lifebook t4215 laptop battery from your machine when it is not being used and clean it with soft and dry cloth.
  
• Do not drop, hit or otherwise abuse the lifebook t4215 battery as this may result in the exposure.
  
• Especially avoid regularity ove-rcharging and over-discharging and high temperature.