225 BATTERY CHARGINGBE SURE to replace the battery pack with a new one approximatelyfive years after manufacturing, even if it still holds a charge. The in-side battery material will become weak after a period of time, evenwith little use. The estimated number of times you can charge thebattery is between 300 and 500.Even when the battery appears to be fully charged, the operatingtime of the transceiver may become short when:• Approximately five years have passed since the battery was man-ufactured.• The battery has been repeatedly charged.D Charging cautionR DANGER! NEVER charge the battery pack in areas with ex-tremely high temperatures, such as near fires or stoves, inside asun heated vehicle, or in direct sunlight. In such environments, thesafety/protection circuit in the battery will activate, causing the bat-tery to stop charging.R WARNING! DO NOT charge or leave the battery in the batterycharger beyond the specified time for charging. If the battery is notcompletely charged by the specified time, stop charging and re-move the battery from the battery charger. Continuing to charge thebattery beyond the specified time limit may cause a fire, overheat-ing, or the battery may rupture.R WARNING! NEVER insert the transceiver (battery attached tothe transceiver) into the charger if it is wet or soiled. This couldcorrode the battery charger terminals or damage the charger. Thecharger is not waterproof.CAUTION: DO NOT charge the battery outside of the speci-fied temperature range: BC-160/BC-171 (0˚C to +40˚C; +32˚F to+104˚F). Icom recommends charging the battery at +20˚C (+68˚F).The battery may heat up or rupture if charged out of the specifiedtemperature range. Additionally, battery performance or battery lifemay be reduced.