Section 4: Safety Guidelines and Warranty Information102 4A: Safety Any other area where you would normally be advised to turn off yourvehicle’s engine.Note: Never transport or store flammable gas, liquid or explosives in thecompartment of your vehicle that contains your phone or accessories.Restricting Children’s Access to your PhoneYour PCS Phone is not a toy. Children should not be allowed to play withit because they could hurt themselves and others, damage the phone ormake calls that increase your phone bill.Caring for the BatteryProtecting Your BatteryThe guidelines listed below help you get the most out of yourbattery’s performance. Use only Sprint-approved batteries and desktop chargers. Thesechargers are designed to maximize battery life. Using other batteriesor chargers may void your warranty and may cause damage. In order to avoid damage, charge the battery only in temperaturesthat range from 32º F to 113º F (0º C to 45º C). Don’t use the battery charger in direct sunlight or in high humidityareas, such as the bathroom. Never dispose of the battery by incineration. Keep the metal contacts on top of the battery clean. Don’t attempt to disassemble or short-circuit the battery. The battery may need recharging if it has not been used for a longperiod of time. It’s best to replace the battery when it no longer provides acceptableperformance. It can be recharged hundreds of times before it needsreplacing. Don’t store the battery in high temperature areas for long periods oftime. It’s best to follow these storage rules:Less than one month:4º F to 140º F (-20º C to 60º C)