I have a 2007 Club Car Precedent with new batteries installed back in June. I use the car every other weekend. The first few times i charged the batteries all was OK. Now, when I charge the batteries overnight they are OK however when I leave them on the charger for the two week period they are overflowing out of the caps and leaking a few drops of acid on the shop floor. I have not added any water. The level is just over the top of the plates. Any thoughts?