Doro 520, Manual

English

www.doro.com 

7

Installation

Battery

The telephone is supplied with environmentally friendly nickel metal hydride 

(NiMH) batteries - 2 x AAA 1.2V. As with all batteries, performance may degrade 

over time; should you notice that the standby time has reduced considerably or 

there are signs of leakage, the batteries should be replaced. Always replace both 

batteries using only NiMH rechargeables.

Fully charged batteries will last for approx. 100 hours in standby or approx. 10 

hours’ call time. The stated times apply at normal room temperatures using fully 

charged batteries.

Completely discharged batteries will take about 10 hours to fully recharge (24 

hours from new).

Please note that the battery indicator          in the display will fl ash while the 

handset is on the base unit, and does not stop/go out when the battery is fully 

charged.

The base unit has an automatic charging mechanism that prevents the batteries 

from being overcharged or damaged due to prolonged charging.

Please note!

To ensure and maintain good charging of the handset battery/s we recommend that the base and 

handset charge contacts are cleaned regularly, ie monthly, with a pencil eraser and/or a soft dry 

cloth.

When the telephone is installed for the fi rst time, the battery pack must be charged for 24 hours 

before using the telephone. Use DORO original batteries only. The guarantee does not cover any 

damage caused by installing incorrect batteries. The handset is charged with the keypad facing 

outwards. Please dispose of any batteries in a responsible and environmentally friendly manner

Battery Charge Indicator

When charging, the status of the battery symbol will remain unchanged until in 

excess of 10 minutes continuous charging time has elapsed.

If the batteries are running low          will be displayed, although calls can still be 

made/received recharging must occur if a warning tone is heard during a call.

Failure to recharge the batteries will result in the telephone ceasing to function. 

Recall

Access to additional network services can be gained by using the recall button R, 

*

 and 

#

 keys. Contact your network operator for more information.

Press the recall button R followed by the extension number to when connected to 

a PBX (TBR only).