Frequently Asked Questions
Q: Which battery fits my Inogen or OxyGo device?
A: BA-300 and BA-316 fit the Inogen One G3. BA-400 fits the Inogen One G4 and OxyGo FIT. BA-500 and BA-516 fit the Inogen One G5, Rove 6, and OxyGo NEXT. These batteries are NOT interchangeable across generations. OxyGo FIT is the same device as Inogen G4. OxyGo NEXT is the same as Inogen G5.
Q: Can I fly with Inogen OxyGo batteries?
A: Yes. All Inogen and OxyGo batteries are under 100Wh, which meets FAA rules for spare lithium-ion batteries in carry-on luggage. You can bring up to two spare batteries. They must be protected from short circuits and cannot go in checked luggage. Always check with your airline before flying.
Q: Are Inogen and OxyGo batteries interchangeable?
A: Yes, within the same device generation. OxyGo FIT is a rebranded Inogen G4 — they use the same BA-400 battery. OxyGo NEXT is a rebranded Inogen G5 — they use the same BA-500 battery. However, you cannot use a G3 battery in a G5 or a G4 battery in a G3. Each generation has a different connector and voltage.
Q: How long does an Inogen battery last before needing replacement?
A: Inogen and OxyGo batteries typically last 12-24 months with daily use before runtime drops noticeably. Signs you need a replacement include: the battery drains much faster than when new, the device shuts off sooner than expected, or the battery indicator drops quickly after a full charge.
Q: What is the difference between 8-cell and 16-cell batteries?
A: 8-cell batteries (BA-300, BA-500) are standard single packs — lighter and more portable. 16-cell double batteries (BA-316, BA-516) provide roughly twice the runtime but are heavier and larger. Choose 8-cell for daily errands. Choose 16-cell for long trips or all-day use away from power.
