I have somewhat of a complex problem with my Asus laptop (roughly 1 year old). It started when I required a screen replacement for my laptop, which I ordered and installed, and only after failed attempts to boot realized that I was sent the incorrect screen, even though it fit my connector, and long story short I have the correct one now. Ever since this, my battery has displayed as "Plugged in, charging," when in fact it remains at the same per cent. When I unplug the AC cord and try to put it back in, the "Plugged in, charging" goes away and it fails to recognize the external power source at all, running exclusively off battery power. After many attempts to unplug and re-plug, often upward of 20, it will eventually return to the "Plugged in, charging" state, and sustain the battery at 27%. However, I don't think it's a problem with the cord or AC jack, because if I shut down, remove the battery, and boot simply from the external power, it works every time with no detection issue. I've tried reinstalling the Microsoft ACPI software, leaving the battery unplugged and holding the power button down for 30 seconds, all the basic/obvious stuff. I'd just like a second opinion before investing in a new battery.