Moinsen! I send ahead: I am the total electric legasthenic! My battery seems to be over, though, it is not. Previous owner is not even 2 years old (factory: sunshine). Have started the car several times with starting aid cable. Then it comes immediately – quite normal halt. Today I had measured the battery before: 0.14 volts! deep discharge? Or what do you call it? Did the car then run about 20 months. At the battery I could measure 12,8V about. Then car a us – and immediately made a start attempt… NO MUCKS! So when the battery is gone – by deep discharge, because there e.g. a consumer pulls electricity… Then I would like to get to the bottom of the matter Question: How do you measure such a thing? Multimeter available! Something with ampere? Greeting, Andi