Wierd you should say this mate, i charged my S10 last week, put 210barr in the bottle, went out for a few hours, came in and for some reason decided to dry fire the gun, it sounded quiet so i took the buddy bottle off and connected the pump, and from 210barr it was down to 90barr, just by sitting there i charged it back up and it held its charge, i dont have a clue what happened.