39• If left unused, a fully charged battery will dischargeitself over time.• Use only Samsung-approved batteries, andrecharge your battery only with Samsung-approvedchargers. Disconnect the charger from the powersource when it is not in use. Do not leave thebattery connected to a charger for more than aweek, since overcharging may shorten its life.• Extreme temperatures will affect the chargingcapacity of your battery: it may require cooling orwarming first.• Do not leave the battery in hot or cold placesbecause the capacity and lifetime of the battery willbe reduced. Try to keep the battery at roomtemperature. A phone with a hot or cold batterymay not work temporarily, even when the battery isfully charged. Li-ion batteries are particularlyaffected by temperatures below 0° C (32° F).• Do not short-circuit the battery. Accidental short-circuiting can occur when a metallic object like acoin, clip or pen causes a direct connection betweenthe + and – terminals of the battery (metal strips onthe battery). For example, do not carry a sparebattery in a pocket or bag where the battery maycontact metal objects. Short-circuiting the terminalsmay damage the battery or the object causing theshort-circuiting.• Dispose of used batteries in accordance with localregulations. Always recycle. Do not dispose ofbatteries in a fire.Road safetyYour wireless phone gives you the powerful ability tocommunicate by voice, almost anywhere, anytime. Butan important responsibility accompanies the benefits ofwireless phones, one that every user must uphold.When you are driving a car, driving is your firstresponsibility. When using your wireless phone whiledriving, follow local regulations in the country or regionyou are in.