NaviTEK NT 153800 Iss 1User Guide Page 5PowerNaviTEK NT can be powered from:• A rechargeable power module,• Directly from power connected to the DC inlet built in to the power module.• From an alkaline battery pack.The type of module or pack supplied as standard depends on the model purchased.Power Module ManagementA fully charged power module will support up to five hours of heavy, continuous use. Formaximum life of the power module it is recommended to discharge it fully and then rechargeit fully at least once a month.The power module is not user-serviceable. When it has reached the end of its life, contactyour local IDEAL representative for service.Power Module RechargingThe power module can be fully recharged in three hours with the NaviTEK NT switched ON orOFF. To recharge the power module, connect the supplied power adaptor to the DC inlet.For convenience the power module may be removed from, or left attached to, the tester forcharging. The Power LED next to the DC inlet glows green to show that the battery is beingcharged, and flashes green to show that it is not being charged. The power module’s chargestate is indicated at FULL, 2/3, 1/3 and EMPTY by the graphical power meter shown in theinformation bar at the top of the display.Fig 1 Power indicationsBattery PackThe battery pack accepts four replaceable AA alkaline cells. These cells cannot be recharged.