
It's ok if you have multiple batteries, it's very expensive for it's capabilities but I'm glad I have it. I should also mention that this seller offered it at a cheaper price compared to other sellers. Now that I've had it for a while I think it was a waste of money. The battery will only work with one type of Inogen battery and this charger is taking too long to charge the battery. A built in charger or oxygen concentrator is much more efficient and faster. Don't waste your money on this, buy a second battery.

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