Inogen One G3 Extended (16-Cell) Battery - Portable Replacement Battery - for The One G3-2.3 lb. and 8.75 x 3.0 x 1.98 in.

Fit perfectly, replacing yhe smaller battery. Only had a short while, so can't comment on durability.

G3 Battery arrived. - charged it thru unit plugged to wall. I had mobility comfort zone for travel before end of day. Have already re-charged for another long day. It went 100% Full Battery - perfect❗️

Yes, this battery is expensive. And yes, adding the charger makes it even worse. But on level 3, I went from a little over 3 hours to a little over 7 hours and that is a HUGE improvement in my quality of life!!! Before, I was constantly checking to see how much time I had left. Now I honestly don’t even check because 6 hours is about the limit of my endurance before I have to go home and take a nap! I was also concerned about the extra weight but it has not been an issue.

This is as it is shown. Double battery pack for inogen 1-3 and came on time, reasonable price, well packaged and handed to m.e

Batería de calidad y larga duración

I was so excited to get the G3 portable oxygen concentrator. Saw that the battery promised 4 hrs of use. What a crock! If they would have told me at the start that the battery use depended on the oxygen level I would have ordered the 16 cell when I ordered the unit. Four hours only counts on level 1. My level 3 knocked it down to 2 hrs. My doctors appt took up 1.5 hrs before I realized it. So now I have two batteries. One that came with the startup will be good for walking the dog and this one costing $500 will give me 6 hrs for shopping.

If I had bought this directly from Inogen, it would have cost a lot more than I paid for it here. I was surprised when it came in an Inogen box. We did pay the extra thousand dollars, and in doing so, part of the price of their extended warranty was to get free replacement , along with a double battery. The machine has had to be replaced 4 or 5 times now, but batteries aren't covered with Inogen. The single battery is an automatic to package with the machine, so it's great having the two batteries to allow us more time out. Since we have had the machine for 7 years, and the double battery is used the most. It is the one running more than the single battery. I have seen many reviews on the batteries, and most are talking about only having the single battery, so I guess they didn't buy the extended warranty. We are sure glad that we did, since we have replaced the concentratior 4 or 5 times now. We do love that machine!

Dead on arrival! Battery was useless. Would not hold a charge; could not recharge for use. Tried charging installed on machine and uninstalled, with an approved recharging device. Because I was also relocating during time of purchase I missed the return date as well. Out all the money with NO recourse to a refund or trade out. I do not recommend. Buyer beware I f you purchase, & be sure to test it immediately upon delivery!!

Excelente calidad y buen precio

muy útil y beneficioso, para quienes usamos el INOGEN, gracias.