Used Inogen One G5 Replacement Battery – 8‑Cell or 16‑Cell | 16-Cell | BA

Stay mobile with a more affordable backup battery for your portable oxygen concentrator. This used Inogen One G5 replacement battery is available in 8‑cell and 16‑cell options, giving you flexible extra power for errands, appointments, and travel without paying full new‑battery prices.

Because this is a used item (not new or “like‑new open box”), runtime and cosmetic condition will vary from unit to unit. It is best suited for users who want lower‑cost backup power and understand that a used battery will not perform the same as a brand‑new battery.

Why choose this used G5 battery

• Lower‑cost backup power for Inogen users who want a more affordable alternative to a new battery.

• Two sizes available: choose 8‑cell or 16‑cell based on how long you’re typically away from a charger.

• Perfect as a spare for travel days, long appointments, emergencies, or everyday mobility.

• Easy to swap in and out of your compatible portable oxygen concentrator.

• A practical option if you’re building a more reliable daily oxygen routine without the cost of multiple new batteries.

If you need the most predictable runtime possible, a new battery is usually the better choice. Many customers use a used battery as a secondary or backup battery rather than their only power source.

Choose the right battery size

Used 8‑Cell Battery
Best for lighter daily use and shorter outings.

When new, an 8‑cell Inogen One G5 battery can provide up to about 6.5 hours of runtime, depending on settings; your actual runtime on a used battery will be lower and may vary. Charging time when new is typically up to 3 hours; used batteries may take longer depending on condition.

Used 16‑Cell Battery
Best for longer outings, extended appointments, and fewer charging breaks.

When new, a 16‑cell G5 battery can provide up to about 13 hours of runtime, depending on flow setting and use; used batteries will usually deliver less. Charging time when new is typically up to 6 hours; again, actual time can vary for used units.

Overall performance depends on:

• Your flow setting and breath rate

• Temperature and environment

• Battery age and prior use

• Overall condition of the battery and device

Condition details

This product is sold as used. Buyers should expect:

• Reduced runtime compared with a new battery

• Normal cosmetic wear from prior handling and use

• Variation in prior charge cycles and remaining battery life

This product is best for customers who want a lower‑cost backup battery and are comfortable with normal variation in used battery performance.

Compatibility

This used replacement battery is compatible with:

• Inogen One G5

• Inogen Rove 6

• OxyGo Next

It is not compatible with:

• Inogen One G3

• Inogen One G4

• Other portable oxygen concentrators not listed here

For the best results, always confirm your device model before ordering.

Who this battery is best for

• Inogen One G5 users who want an affordable replacement or backup battery

• Inogen Rove 6 users who need spare power for daily mobility

• OxyGo Next users planning longer outings or travel

• Caregivers who want a second battery ready for appointments and emergencies

Need help choosing?

Not sure whether the 8‑cell or 16‑cell battery is right for you? Tell us:

• Your usual flow setting

• How many hours you’re typically away from home or a charger

We can help you choose the best option for your routine and discuss whether a used battery is the right fit for your needs.