I made the mistake of ordering a battery in the online shop. In the meantime I was sent 4 pieces, of which at least 3 did not survive the transport in the optimal condition. The first one was already “destroyed” by DPD, the second one arrived, but only lasted a few months (I don’t know if this could have had a transport damage too), in the following two replacement deliveries a different amount of acid occurred. I noticed that unlike the first one, the battery had no longer a yellow stopper as a transport safety device. So the design of the battery was actually changed, so that the corresponding degassing hole no longer seems to exist at all. Could this be one reason for the new models to run out even more easily? Does the ventilation hose really not have to be connected anymore, or is the hole only in another place, so that I can use the And the following question: Since I don’t want to go on playing the game for ever, I wonder if one could somehow bring these maintenance-free batteries back to a state in which one can use them?! The batteries are of the type Moll Kamina Start. In the appendix you can see in a picture that the vent breaker is no longer present with the new (the right two).