Inogen One G2 Manuel D'utilisation page 39

To replace the fuse, follow these instructions and refer to the photograph below.
1. Remove the tip by unscrewing the retainer. Use a tool if necessary.
2. Remove the retainer, tip and fuse.
3. The spring should remain inside the Cigarette Lighter Adapter housing. If the spring
is removed, make sure to replace the spring first before inserting the replacement
fuse.
4. Install a replacement fuse, Inogen RP#125 (BUSS MDA-12) and reassemble the tip.
Ensure the retainer ring is properly seated and tightened.
Cigarette Adapter Plug
CAUTION For continued protection against risk of fire, only use fuse specified.
Fuse Retainer Tip
Cleaning, Care and Maintenance Chapter 6
Retainer
35