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The Cordless phone is powered by a rechargeable battery. You can fully charge a flat battery by placing the Cordless phone in the charger for 4 hours. A fully charged battery gives you up to 17 hours calling time or up to 140 hours stand-by time.
The calling time and stand-by time is shortened if the handsfree speaking function is used a lot.
The Cordless phone has a battery meter, which indicates the power left in the battery.
The Cordless phone is powered by a Nickel Metal Hydride (NiMH) battery. It can be recharged at any time. To keep the battery fully charged, you can put or leave the Cordless phone in the charger without any problem.
When the battery is fully charged, the battery meter on the Cordless phone display consists of four blocks. The number of blocks decreases as the battery discharges. If the battery is almost flat, the battery meter and the red light on the Cordless phone flash. An alarm sounds if there is less than 15 minutes calling time left in the battery.
The table below indicates the performance:
Place the Cordless phone in the charger as shown in the figure below
The battery is being charged when the lower green LED on the charger is on (and the battery meter on the display flashes). If the battery is completely flat it can take a few minutes before the lower green LED on the charger comes on.
When the battery is 90% charged, the LED starts flashing (3 second intervals) and when the battery is fully charged, trickle charging starts (LED lights up for 1 second every 30 seconds) and the battery is ready.
Place the DT290 in the charger and charge it for at least 4 hours before using it the first time.
Make sure the local mains voltage corresponds to the voltage on the charger.
Only use the charger that comes with the Cordless phone.
Do not connect the phone to the charger without a battery.
Rechargeable batteries have a limited lifespan. If the stand-by time for the Cordless phone becomes too low, you should replace the battery. Please contact your system administrator or supplier for more information.
Only use the specified batteries (NiMH pack 600 mAh, 3.6 V).
The battery does not contain cadmium and is therefore more environmentally-friendly than other rechargeable batteries. However, all batteries should be treated as chemical waste.
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