132Copyright © 2005 Nokia. All rights reserved.20. Reference information■ Battery informationCharging and dischargingYour device is powered by a rechargeable battery. The full performance of a newbattery is achieved only after two or three complete charge and discharge cycles.The battery can be charged and discharged hundreds of times but it willeventually wear out. When the talk and standby times are noticeably shorter thannormal, buy a new battery. Use only Nokia approved batteries, and recharge yourbattery only with Nokia approved chargers designated for this device.Check the model number of any charger before use with this device. This device isintended for use when supplied with power from the ACP-12 charger.Unplug the charger from the electrical plug and the device when not in use. Donot leave the battery connected to a charger. Overcharging may shorten itslifetime. If left unused, a fully charged battery will lose its charge over time.Temperature extremes can affect the ability of your battery to charge.Use the battery only for its intended purpose. Never use any charger or batterythat is damaged.Do not short-circuit the battery. Accidental short-circuiting can occur when ametallic object such as a coin, clip, or pen causes direct connection of the positive[+] and negative [-] terminals of the battery. [These look like metal strips on thebattery.] This might happen, for example, when you carry a spare battery in your