Hi. Not knowing what other things have been replaced or repaired in the last year or 12,000 miles I would consider the battery cables and ends. Especially the negative cable clamp and cable. Why? Well I have a Kia Rio 5, 2011 and I just recently change the clamp part only of the cable and at first it worked well, but I am beggining to see lower rpms on stop traffic cituations and it almost shuts off especially when a/c is on or lights or both. I am not a mechanic but my intuitive reasoning points to the negative clamp I put in. Why? Because with so much electronics in the modern vehicles, I am guessing that the metal composition of the clam does not meet the specs of the vehicle I am using it on. This may be acting as a resistor in the operation of the electrical system of my vehicle. SOLUTION in my case: Replace batery cable clamp or eve clamp and cable with factory specic or equivalent specific used of replacement part. (Original & New may be the better remedy). e bay for cheaper if dealer price is not in your budget. Good luck. ( note: I am not a mechanic : )
Both seem fine.