AASTRA DT4x2 for MD Evolution User Guide EN - Manual (Page 13)

13 MD Evolution – Cordless DT412 / DT422 / DT432
Important
Charging and batteries
Please read carefully the following important precautions
before the first time use of the batteries. Make sure to
understand and observe all cautionary instructions stated, so
as to avoid any possible safety hazards that are caused by
any misuse, misapplication or damage to batteries.
• Only use batteries, mains adapters or desk and rack chargers
designed for use with your product.
• Use of power sources not explicitly recommended may lead to
overheating, reduced battery performance, distortion of the
equipment and fire or other damages.
• Cordless telephones are equipped with Nickel Metal Hydride
(NiMH) batteries or Lithium Ion Lion batteries. In a complex
infrastructure, the talk- and standby time may differ, due to the
consequence of the increase in signaling.
• The battery must always be completely charged (minimal 4
hours) before first time use.
• The battery in your product is designed to withstand many
charge cycles.
• Use only the recommended charging equipment.
• Improper charging can cause heat damage or even high
pressure rupture.
• Observe proper charging polarity.
• Do not solder lead wires directly onto the battery.
• Do not allow water to come into contact with the battery.
• The initial charging of a NiMH battery will cause the battery to
become warm. This is a normal effect of charging NiMH
batteries.
• The batteries are replaceable, however it is not the intention to
do this frequently.
• Only charge the batteries 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.