[ 77 ]Reference information18 Reference information• USE ENHANCEMENTS SAFELYThis section provides information about the phone’s batteries, enhancements, and chargers. Beaware that the information in this section is subject to change as the batteries, chargers, andenhancements change.This phone is intended for use when supplied with power from an ACP-7U, ACP-8U, ACP-12U,or LCH-9 charger. Other usage could invalidate any approval given to this apparatus and maybe dangerous.Warning: When you purchase batteries, chargers, and enhancements for your phone,use only batteries, chargers, and enhancements that have received approval fromNokia. The use of any other type may invalidate any approval or warranty applying tothe phone, and could also be dangerous. For availability of approved batteries, chargers,and enhancements, check with your service provider.Note: For information on how to charge and recharge your battery, please see “Charge”on page 11.When the battery is fully charged, the indicator will tell you that the battery is fully charged.When you are not using a charger, disconnect it from the power source. Do not leave thebattery connected to a charger for more than 72 hours, since prolonged maintenance chargingcould shorten its lifetime. If left unused, a fully-charged battery will discharge over time.Temperature extremes can affect the ability of your battery to charge. Therefore, allow it tocool down or warm up before trying to charge it.When the battery is running out of power and your phone only has a few minutes of talk timeremaining, a warning tone sounds and the Battery low message appears briefly. When no moretalk time is left, a warning tone is sounded and the phone switches itself off.Leaving the battery in hot or cold places, such as in a closed car in summer or winter conditions,will reduce the capacity and lifetime of the battery. Always try to keep the battery between59°F and 77°F (15°C and 25°C). A phone with a hot or cold battery may temporarily not work,even when the battery is fully charged. Battery performance is particularly limited in temperaturesbelow freezing.Do not dispose of batteries in a fire!Warning: Use only your hands to remove the battery. Do not puncture, burn or useany objects that may damage the phone or the battery. Please recycle the battery, ordispose of properly.• IMPORTANT SAFETY INFORMATIONThis section provides additional safety information. A brief overview of safety can be found inthe section.Traffic SafetyDo not use a handheld telephone while driving a vehicle. Always secure the phone in its holder;do not place the phone on the passenger seat or where it can break loose in a collision orsudden stop.Remember road safety always comes first!