Aastra DT690 User Manual page 16

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Smoke or fumes
or fumes. Unplug the mains adapter and remove the batteries from the phone
immediately. Continued operation may result in fire or electrical shock.
8
The battery is replaceable, however it is not the intention to do this
frequently.
Only charge the battery when placed in the phone.
Use only the specified battery-packs for your product.
Never heat or dispose of the battery into a fire, which, or else, may cause
leakage, burst or fire.
Remove the carrying case from the product while in charger.
Do not cover the product while being charged. Do not charge the phone
in a closed cabinet or drawer. The charging of the battery is a chemical
process and causes the battery to become warm during charging. Make
sure the environment in which the phone is charged, is well vented.
The cordless phone can be charged either when switched on or off.
Do not connect the battery's positive and negative leads altogether in any
circumstances.
Do not strike or drop the battery. It may cause damage to the battery.
Do not charge the battery below +5°C (+41°F). Be sure to charge the
battery between +5°C and +40°C (+41°F and 104°F). Charging beyond
these conditions may impair the battery performance and shorten the life
cycle.
Do not use battery packs from different types, brands or of different
capacities.
The battery is to be stored in a dry cool 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.
Dispose the battery in accordance with all local regulations, applicable
in your country.
Stop operating the products and turn off immediately in case of smoke
Warning!
1424-EN/LZT 103 090 Uen A1 2008-10-24