Some Honda Civics call for an R model battery. It has a duplicate battery model for other vehicle makes/models but some specifically call for a Battery model that's starts with R which is an identical battery with reverse terminals. When the wrong battery is selected in the battery manual catalog and is connected, it blows a five dollar battery fuse under the hood in the front of the fuse box in front of the relays. Once the battery fuse is replaced, to keep from blowing the fuse again, the customer has two options. The customer will either exchange the battery if he catches it, or turn the battery around, in which the terminals are different sizes, causing one clamp to have been stretched after being tightened with no way to reverse the terminals without replacing or rigging some kind of wire to fill the gap. These cars have very exposed ground wires normally held in by a small bolt so if you're still having trouble starting but the ignition is turning on, it could be the ignition switch, electrical problem or oxidized ground wire that runs from the black side of the battery terminal normally to a 10 mm bolt right in front of the battery. The simplest fix is to replace the bolt and make sure there is ample wire, twisted together to create a large enough current to allow the starter to fire. The starter can be tested with a decent piece of good insulated wire while the ignition is in the on position, touching the small connector to the bolt connector on the starter(using the wire, it should turn the engine), making sure not to get your fingers close to anything where the current can arch. It carries enough amps to stop your heart but I did it for months trying to find a work around, rain(used gloves) or shine. I would recommend having a certified mechanic do it for you , or don't ground yourself to anything. It also may attract unwanted attention.