Aastra DT390 User Manual page 13

USER GUIDE
2.4.3
1424-EN/LZT 103 087 Uen G 2014-04-14
• Do not, under any circumstance, connect the battery's positive and
negative leads altogether.
• Do not strike or drop the battery. It may cause damage to the
battery.
• The battery should be stored in a dry place, with the ambient
temperature of approximately +25°C (+77°F) for best performance.
• The battery continues to discharge a minimal portion of its power,
even if the product is switched off or the battery is removed.
Disposal of Telephone and Batteries
Defective phones or batteries should not be placed in municipal waste.
Please check local regulations for disposal of electronic products.
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