NOT KNOWN FACTS ABOUT MERCEDES AMG SERVICE TAURANGA

Right after charging the volts ended up at 13.ten but slowly dropped to settle at 12.58volts. I connected the battery, and here is in which the confusion begins. The very first time I put the key in very little occurred, but when I tried a 2nd time "whalla" it labored. I attempted it 5 occasions and labored anytime. Do you think it is the automobil