The pass through that I have for the 510 has exactly the same battery in it. That battery, like any other will only re-charge a certain amount of times and after that will need to be replaced.
I know they are currently available at Jantys site and are cheap enough not to worry about.
When I bought my JantyStick from iVapour over here in the UK I bought spare batteries which cost me £2.50 each. And that is the exact same battery as is in the pass through.
My pass through has been plugged into my Mains/USB since I bought it, and if I need to take it out with me for whatever reason, it works fine.
I know they are currently available at Jantys site and are cheap enough not to worry about.
When I bought my JantyStick from iVapour over here in the UK I bought spare batteries which cost me £2.50 each. And that is the exact same battery as is in the pass through.
My pass through has been plugged into my Mains/USB since I bought it, and if I need to take it out with me for whatever reason, it works fine.