5.3.4 Battery troubleshooting If the green Charge LED on the charger fails to light when the IQ Force is placed in the charger, remove the instrument from the charger and press the MODE button to attempt to start the instrument. If the IQ Force starts and the battery icon shows all three bars, then the battery is fully charged and maybe used. In this case, the charger has recognized that the battery is charged and will not charge it any further. 2. If the IQ Force fails to turn on, then the battery maybe severely discharged and should be returned to the charger. The charger will then begin a very slow recharge in order to protect the battery. The green Charge LED may not be lit during the first four hours of the slow recharge. If the Charge LED has still not been lit after four hours, the battery or charger is probably damaged. If the IQ Force starts and any battery level other than full is indicated, then either the battery is damaged or the charger is damaged. Call Honeywell Analytics for further instructions.