34 Copyright © 2005 Nokia6 Reference Information• Battery informationCharging and dischargingYour device is powered by a rechargeable battery. The full performance of a new battery isachieved only after two or three complete charge and discharge cycles. The battery can becharged and discharged hundreds of times, but it will eventually wear out. When the talkand standby times are noticeably shorter than normal, replace the battery. Use only Nokiaapproved batteries, and recharge your battery only with Nokia approved chargers designatedfor this device.Unplug the charger from the electrical plug and the device when not in use. Do not leave afully charged battery connected to a charger, since overcharging may shorten its lifetime.If left unused, a fully charged battery will lose its charge over time.Use the battery only for its intended purpose. Never use any charger or battery thatis damaged.Do not short-circuit the battery. Accidental short-circuiting can occur when a metallic objectsuch as a coin, clip, or pen causes direct connection of the positive (+) and negative (-)terminals of the battery. (These look like metal strips on the battery.) This might happen, forexample, when you carry a spare battery in your pocket or purse. Short-circuiting theterminals may damage the battery or the connecting object.Leaving the battery in hot or cold places, such as in a closed car in summer or winterconditions, will reduce the capacity and lifetime of the battery. Always try to keep thebattery between 15°C and 25°C (59°F and 77°F). A device with a hot or cold battery maynot work temporarily, even when the battery is fully charged. Battery performance isparticularly limited in temperatures well below freezing.Do not dispose of batteries in a fire as they may explode. Batteries may also explode ifdamaged. Dispose of batteries according to local regulations. Please recycle when possible.Do not dispose as household waste.BL-5C Talk time,Standby timeTalk–time: up to 4.5 hoursStandby time: up to 10 daysBL-5C Charging time(approximate)ACP-7 Charger—3 hoursACP-8 Charger—2 hoursACP-12 Charger—1 hour, 30 min.