How to Replace battery 2008-12 Honda Accord

Hi, I’m Mike from 1A Auto. We’ve been selling auto parts for over 30 years!

Open the hood, reach down, and pull the release. It's located far down here by your left foot where it would rest. Pull it open. Release the secondary latch. Just push up on it and lift it up. Start by disconnecting the negative terminal, using a 10mm wrench. I'll loosen the nut. Put the terminal aside. I'm going to loosen, now, the positive terminal. I'm going to lift up the protective cover. It's also a 10mm nut. Just be aware, if you're using a long wrench like this, to not touch it to anything metal while you're working with this. It will ground out. Loosen this one. Pull the terminal off. Put that aside.

I'm going to use a 10mm deep socket and a ratchet to loosen the battery tie-down. These are L-bolts. They're very long. They go down. They have a little L at the end. They have a 10mm nut on the end. It's threaded over the rod. We're going to remove it. You don't have to thread it all the way up. You just want to get it loose enough. You can unhook it from the bottom. Loosen both up. And then you can kind of move these and unhook them just like that. And unhook this one over here.

So, they have these little hooks here, and you're just unhooking them from underneath the battery sides. We can lift this all up as one piece and take it out. Lift the old battery out, and dispose of it properly.

Install the new battery. This vehicle actually had the incorrect sized battery in it. I'm putting the correct size in. You can leave these handles on or take them off. I'm going to leave it on, just push it down. Reinstall the battery tie-down. I reach down, grab it on the little hooks, and do the same for both sides. This needs to be brought up. Get the other one hooked in place. Need to loosen this one up a bit.

If your battery was the correct size to begin with, this'll probably pop right back in. I just have to make some adjustments. There's that one hooked. They're both hooked now. We'll tighten them up. I'm going to hold the L-bolt up, and I'll tighten this down. Do the same for this one. You don't have to over-tighten it, but you don't want the battery bouncing around as you drive down the road, so just make it snug. A little bit more. That's good there. Remove the protective caps, and reinstall the positive terminal.

Tighten this up with a 10mm wrench. You can even hold it with your fingers. Thread it in to get it started. Tighten this up with the 10mm wrench. Make sure that's nice and tight. It's tight. When you reattach the negative terminal, there is a possibility that factory alarm may go off. You should have your key fob handy. So, I'm going to take the protective cover off. Sometimes alarms get triggered with a battery disconnect, so the horn might go off here, and you want to have the remote handy to shut the horn off. So, I've disarmed the alarm system, and now I'm tightening the negative terminal back up. Get rid of our caps, put the protective cover back down, and the battery is replaced.

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