What to do if Battery Gauge is dark when AC or DC charging adapter plugged into Invacare Oxygen Equipment?
- MMichael PetersonSep 23, 2025
If the Battery Gauge is dark when the AC or DC charging adapter is plugged into your Invacare oxygen concentrator, and no Battery Gauge segments are illuminated when the battery status button is pressed, consider the following: * Try another power outlet and check the connections to the charger and concentrator, as the power source may be faulty or there may be a loose connection. * Allow the unit to reach a charging temperature range (between 41ºF and 95ºF), as the internal battery might be outside the allowed temperature range for charging. * If using a DC adapter, change the fuse, using Invacare part number 1185420.









