Like New Inogen One G3 Double Battery ONLY Model # BA-316. THIS BATTERY CAME WITH A UNIT THAT HAS LESS THAN 28 LIFETIME HOURS. THE LAST 3 PHOTOS IS FOR INFORMATIONAL PURPOSES ONLY! THE OXYGEN CONCENTRATOR IS NOT INCLUDED! I personally did a test where it took about 5 hours to fully charge. And the battery lasted 7.5 hours on setting #2. SUPER FAST SHIPPING!