1998 Honda Accord not turning over
I have a 1998 Honda Accord 2.3L. Was working great. My brother sold me a battery for my 05 sentra. When i went to go pick it up i put the "new" battery i just bought, in the honda. On a multimeter battery was at 9.61. Honda didn't start. My brother jumped it with battery to battery no negative on body. Car started. I drove about 40 miles home mostly frwy. Got home and left "new" battery in honda. I cranked it again about 5 min later and no problems. Checked voltage and 13.4 engine off, probably settling down. Less than an hour later went to start again and nothing. Battery, 12.4,headlight,interior lights, windows strong but when key turned to start, dash lights come on, key blinks and goes off. No check engine but battery maintenance, battery, oil, brake light stay on until key is out. Key light flashes about 4x tgen goes of. Stereo beeps light normal. Close doors and alarm sets in about a minute.
Hit the starter, checked all basic fuses, except stuff i don't know how to test. After all said and done, car is in garage, battery at 12.4 light and everthing else stront. Crank, click arount battery area and a second click around engine fuse area about a 1/2 second from each other. I say area cause haven't pin pointed yet.
I would appriciate any help. Thanks.