28Recharging the BatteryThe lamp blinks in red.This indicates that you should calibrate the battery so that the correct battery level is detectedand the camera’s battery level indicator can display the correct battery level. Calibration is not arequired operation. If you want to just recharge the battery, you can let the battery startrecharging automatically after about 10 sec. If you want to do the calibration, press the<CALIBRATE> button while the <CAL/CHARGE> lamp is blinking in red. The Chargelevel indicator will blink in red and the calibration (power discharge) will start.After the calibration is completed, the battery will start recharging automatically. Note thatthe less depleted the battery, the longer the calibration will take. The <2h>, <4h>, and<10h> figures on the side of the Charge level indicator respectively indicate theapproximate number of hours it will take to complete the calibration (power discharge). Ifthe <10h> indicator blinks in red, it will take approx. 10 hours. After the calibration iscompleted and the battery is totally drained, it will take a further 2 hours to recharge thebattery fully. If you want to stop the calibration before it is completed and start rechargingthe battery, remove the battery from the charger and attach it to the charger again.All three Charge level indicators blink.If all three Charge level indicators blink in green, it means that the battery’s internal temperatureis not within 0°C - 40°C / 32°F - 104°F. The battery will start recharging when the internaltemperature is within 0°C - 40°C / 32°F - 104°F.If all the Calibration (discharge) status indicators blink in red or if all the lamps blink betweengreen and red (including the <CAL/CHARGE> lamp), remove the battery from the chargerand take it to your dealer or to nearest Canon Service Center.Also, if a battery other than the LP-E4 is attached to the charger, the lamps will blink betweenred and green (including the <CAL/CHARGE> lamp) and the battery cannot be recharged.Use the car’s cigarette lighter socket to recharge the battery.With Car Battery Cable CB-570 (optional), you can connect the charger’s carbattery cable socket (<DC IN> terminal) to your car’s cigarette lighter socket.• When recharging the battery this way, be sure that the car’s engine is on.If the car engine is off, disconnect the car battery cable from the cigarettelighter socket. If you leave the car battery cable connected to thecigarette lighter socket, it may drain the car battery.• Do not use a transformer with the battery charger.• Battery charging from a car battery is possible only with a 12 V DC or24 V DC car battery in a minus-grounded car. The shape or dimensionsof the cigarette lighter socket in certain cars might not be compatible withthe car battery cable.