WIP-6000M User Guide161Precautions When Using Batteriesü Never use any charger or battery that is damaged inany way.ü Use the battery only for its intended purpose.ü If you use the phone near the network’s base station,it uses less power: talk and standby time are greatlyaffected by the signal strength on the cellular networkand the parameters set by the network operator.ü Battery charging time depends on the remainingbattery charge and the type of battery and chargerused. The battery can be charged and dischargedhundreds of times, but it will gradually wear out. Whenthe operation time(talk time and standby time) isnoticeably shorter than normal, it is time to buy a newbattery.ü If left unused, a fully charged battery will dischargeitself over time.ü Use only Samsung-approved batteries and rechargeyour battery only with Samsung-approved chargers.When a charger is not in use, disconnect it from thepower source. Do not leave the battery connected to acharger for more than a week, since overcharging mayshorten its life.ü Extreme temperatures will affect the charging capacityof your battery: it may require cooling or warming f irst.ü Do not leave the battery in hot or cold places, such asin a car in summer or winter conditions, as you willreduce the capacity and lifetime of the battery. Alwaystry to keep the battery at room temperature. A phonewith a hot or cold battery may temporarily not work,even when the battery is fully charged. Li-ion batteriesare particularly affected by temperatures below 0°C(32°F).