I have an A300 with all digital console no key. I try to start it and it beeps loudly as normal but all the displays are like half there and only come on for a few seconds. I was taking battery out and removed negative cable to slide it out and reach positive cable. As soon as I moved it the battery started to make noise. No bs I thought an animal was in the engine compartment I put my ear almost on it and it was definitely the battery. It was a gurgling/growling bubbling sound. I have never heard anything like it. I had the battery tested and it tested 900 outta 924 CCA. Is that good enough? Any help is appreciated I dont have the money to take it to dealer Ive been out injured for 9 months.