4 Charging the battery before first useBefore 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 2 hours or less). This first charge isimportant because it prepares (‘primes’) the battery foruse. The battery may take 2-3 shifts (charge/dischargecycles) to reach maximum capacity.Note: Charging is best performed at temperaturesbetween 50 °F (10 °C) and 77 °F (25 °C) and will startonly when the temperature of the battery is between41°F (5°C) and 95°F (35°C).1 Ensure that the charger is connected to the correctTait power adaptor.2 Put the battery in the charger.The red ‘Charging’ LED glows to indicate that thebattery is being charged.Note: If the amber ‘Fault’ LED lights up, refer to“Troubleshooting your charger” on page 61.)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 50.