I have a gateway sa1 laptop that is probably like 5 years old. It had been sitting for a while when I pulled it out to use it again. The computer was showing a fully charged battery but would die instantaneously when I unplugged the adapter. I figured it was a bad battery so I bought a new one off of eBay. The new battery is saying 0% charged(plugged in, not charging). So I found a bunch of videos on YouTube about Uninstalling the battery software and I tried it 3 or 4 different ways but the battery still says plugged in, not charging. I should also mention that I checked the wear on both batteries and the old battery is and 54% and the new one is at 4%. I'm starting to think both batteries are fine and there's some kind of connection issue. I and to should note both batteries click in to the computer fine and are not loosely attached. Anyone have any ideas on what else I can try?