AGNZ
Contributor
Are there more people who did not renew the o-ring during battery replacement? Did they encounter problems? I bought an i450t last Friday and inserted a new battery. I see no reason why to change the o-ring if it is undamaged, so I kept the original one in place. ( I was surprised by how loose the screws were tightened). I like the i450 but it is annoying that aqualung does supply o-rings only in a battery kit -_-
I have the i450T, its an o-ring if its not worn or damage its good to go. Having a spare is handy though as o-rings can be damaged during the battery replacement process.