185• Battery charging time depends on the remaining battery charge and the type of battery and charger used. The battery can becharged and discharged hundreds of times, but it will gradually wear out. When the operation time (talk time and standby time)is noticeably shorter than normal, it is time to buy a new battery.• If left unused, a fully charged battery will discharge itself over time.• Use only Samsung-approved batteries and recharge your battery only with Samsung-approved chargers. When a charger is notin use, disconnect it from the power source. Do not leave the battery connected to a charger for more than a week, sinceovercharging may shorten its life.• Do not use incompatible cell phone batteries and chargers. Some Web sites and second-hand dealers, not associated withreputable manufacturers and carriers, might be selling incompatible or even counterfeit batteries and chargers. Consumersshould purchase manufacturer or carrier recommended products and accessories. If unsure about whether a replacementbattery or charger is compatible, contact the manufacturer of the battery or charger.• Misuse or use of incompatible phones, batteries, and charging devices could result in damage to the equipment and a possiblerisk of fire, explosion, leakage, or other serious hazard.• Extreme temperatures will affect the charging capacity of your battery: it may require cooling or warming first.• Do not leave the battery in hot or cold places, such as in a car in summer or winter conditions, as you will reduce the capacityand lifetime of the battery. Always try to keep the battery at room temperature. A phone with a hot or cold battery maytemporarily not work, even when the battery is fully charged. Li-ion batteries are particularly affected by temperatures below0 °C (32 °F).• Do not place the phone in areas that may get very hot, such as on or near a cooking surface, cooking appliance, iron, orradiator.• Do not get your phone or battery wet. Even though they will dry and appear to operate normally, the circuitry could slowlycorrode and pose a safety hazard.• Do not short-circuit the battery. Accidental short-circuiting can occur when a metallic object (coin, clip or pen) causes a directconnection between the + and - terminals of the battery (metal strips on the battery), for example when you carry a sparebattery in a pocket or bag. Short-circuiting the terminals may damage the battery or the object causing the short-circuiting.• Do not permit a battery out of the phone to come in contact with metal objects, such as coins, keys or jewelry.• Do not crush, puncture or put a high degree of pressure on the battery as this can cause an internal short-circuit, resulting inoverheating.• Dispose of used batteries in accordance with local regulations. In some areas, the disposal of batteries in household orbusiness trash may be prohibited. For safe disposal options for Li-Ion batteries, contact your nearest Samsung authorizedservice center. Always recycle. Do not dispose of batteries in a fire.