Life saver
I was on a flight and I had to change my batteries mid flight.  Thank GOD I had them.<br />  The airplane's charger at my seat did not have enough voltage.  My oxygen level was dropping and my heart rate was acceling and I thought I was gonna die.<br />I put the battery in and all was well.  Expensive but worth it.<br />  Also when I put the new batteries in, one of them said empty.  I pulled it out and reset them in again and it worked.  I will check to make sure I did not receive a used or defective battery.  I will write back if anything worthwhile to discuss.
Rating: 5 stars