Inogen Extended (8-Cell) Battery - Replacement Battery - for The Inogen One G4/Rove 4-1.1 lb. - 5.91 x 2.68 x 1.34 in.

Works fine, Inogen is a great product!

Works wonderful. Battery life depends on setting. The higher, or more often, the less time you get. Keep that in mind.

Perfect

Battery worked just fine! It came fully charged. Would recommend buying this product.

Great price for the battery. Works perfect. Lasts as long as it indicates.

This supplier sells the exact same battery as I’d found on other websites at a significantly lower price. Same overnight delivery.

We got my hubby an Inogen One G4 which advertised a 4.7 hour on setting 2 double battery life, Nope. Closer to 3.45 on setting 2. Jumps up and down by 30 minutes sometimes (according to the app). So to be on the safe side and never caught off guard we purchased several other doubles to try to make sure we always with power. Still haven't figured out how/why the battery life drops and rises like it does, but thankful that he can continue to keep life as normal as possible by being able to get out and about. UPDATE: We've had these long enough to determine that heat and humidity play a large part in the lifespan of the battery. When we are outside and it's hot and humid, the battery life goes down, sometimes significantly, depending on how hard he's breathing. I've since learned to always learned to carry a spare, and we did buy a car adapter so we can get to the car and "plug him in". Issues or not, this is still the best thing ever. We'd both be miserable if he (we) didn't have the ability to get out and about (without lugging tanks). We continue to learn what we can and cannot do, and about how long we can do it, but always carry a spare battery, just in case!!

These batteries work great for my oxygen machine will definitely get them again when I need new batteries.