5.3.2 Charging guidelines for Li-Ion battery The Li-Ion battery in the IQ Force should never be charged at temperatures lower than CF or higher than CF. Charging at temperature extremes can permanently damage the IQ Force Li-Ion battery. WARNING The IQ Force must be located in a nonhazardous location during
IQ Force™ Gas Detector Reference Manual 35 Sensor replacement the charging cycle. The IQ Force’s battery charger is not approved for use in hazardous locations. 5.3.3 Charging procedure for Li-Ion battery WARNING Do not charge the IQ Force with any charger other than the appro priate IQ Force charger, supplied with the instrument. See Appendix E for replacement chargers. 1. Verify that the instrument is turned off. (If it is not, press the MODE button for three seconds until a message appears that tells you to release it. Plug the power supply in. The red LED is labeled Power and will be lit whenever the charger is plugged into a power source. Insert the IQ Force into the charging cradle bottom side down with the display facing forward. The green LED on the charger is labeled Charge and will be lit while the battery is charging. 4. When the battery is fully charged, the Charge LED will go out.