18[ 122 ]18 Reference informationThis section provides information about your phone’s batteries, accessories,chargers, safety guidelines and technical information. Be aware that theinformation in this section is subject to change as batteries, chargers, andaccessories change.• BATTERIES AND CHARGERSThis phone is intended for use when supplied with power from the ACP-7U,ACP-8U, and ACP-9U chargers. Other usage could invalidate any approvalgiven to this apparatus and might be dangerous.Warning: When you purchase batteries, chargers, and accessoriesfor your phone, use only batteries, chargers, and accessories thathave received approval from the phone’s manufacturer. The use ofany other type of phone-related hardware will invalidate anyapproval or warranty applying to the phone, and could also bedangerous. For availability of approved batteries, chargers, andaccessories, check with your dealer.• When the battery is fully charged, the indicator will tell you that thebattery is fully charged.• When you are not using a charger, disconnect it from the powersource. Do not leave the battery connected to a charger for more thana week, since overcharging could shorten its lifespan. If left unused,a fully charged battery will discharge itself over time.Temperature extremes can affect the ability of your battery to charge.Therefore, allow it to cool down or warm up before trying to charge it.When the battery is running out of power and your phone only has a fewminutes of talk time remaining, a warning tone sounds and the Batterylow message appears briefly. When no more talk time is left, a warningtone is sounded and the phone switches off.
