Charging the battery before first use 19Before first use of your radioCharging the battery beforefirst useBefore using your battery for the first time, you mustcharge it for 14 hours (subsequent charges should becomplete in two hours or less). This first charge isimportant because it prepares (‘primes’) the battery foruse. The battery may take two or three shifts (charge/discharge cycles) to reach maximum capacity.Note: Before charging begins, the battery temperaturemust be close to the room temperature in which thebattery is to be charged. Charging is best performed attemperatures between 50 °F (10 °C) and 77 °F (25 °C)and will start only when the temperature of the batteryis between 41°F (5°C) and 95°F (35°C).1 Ensure that the charger is connected to the correctTait power adaptor (desktop charger) or powered on(multi-charger).2 Put the battery in the charger.Note: For optimal chargingresults, the radio should beturned off while in the charger.The red ‘Charging’ LED glows toindicate that the battery is being charged.Note: If the amber ‘Fault’ LED lights up, refer to“General care” on page 97.)3 Leave the battery in the charger for 14 hours. Whenthe green ‘Ready’ LED on the charger glows, thebattery is ready for use.You can safely leave the battery in the charger whencharging is complete—the charger will not overchargethe battery.For further information on batteries, see “Charging andcaring for batteries” on page 77.