� When a charger is not in use, disconnect it from the power source. Do not leave the battery connected to a charger for longer than a week, since overcharging may shorten its life. If left unused a fully charged battery will discharge itself over time. � For good operation times, discharge the NiMH battery from time to time by leaving your phone switched on until it turns itself off. Do not attempt to discharge the battery by any other means. � Temperature extremes will affect the ability of your battery to charge: allow it to cool down or warm up first. � When the battery is running out of power and only few minutes of talk time remain, a warning tone is heard and Battery low is briefly displayed. When no more talk time is left, Battery empty is displayed and a warning tone is sounded and the phone switches itself off. Using the Batteries � Use the battery only for its intended purpose. � Never use any charger or battery which is damaged or worn out. � Do not short-circuit the battery. Accidental short-circuiting can occur when a metallic object (coin, clip or pen) causes direct connection of the + and - terminals of the battery (metal strips on the back of the battery) for example when you carry a spare battery in your pocket or purse. Short-circuiting the terminals may damage the battery or the connecting object. � 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 between 15 C and 25 C (59 F and 77 F). A phone with a hot or cold battery may temporarily not work, even when the battery is fully charged. NiMH batteries performance is particularly limited in temperatures below -10°C (14 F). Li-Ion batteries performance is particularly limited in temperatures below -0 C (32 F). � Do not dispose of batteries in a fire! Batteries must be recycled or disposed of properly. Must not be disposed of in municipal waste!