Hello, my 55 AH battery had given up the spirit and therefore I walked to ATU. There they had no 55AH and explained that a 50AH (89.99) would be just as suitable and would be better suited even in short distance traffic. After I had installed it I noticed that the engine was just coming like this when starting and it felt a little too weak to start the engine safely and powerfully. Although the engine just starts up like this, you have the feeling that there is no longer enough Saf can the new battery be unsuitable or too weak, or is the error somewhere else (something is pulling current or possibly the new battery has to be recharged)? Thanks for the tips and advice in advance!