Battery 0% (Plugged in and charging) Still cant use laptop without mains power

Pay attention to this especially when you use an IBM laptop. If you are sure that the battery contacts the laptop properly but the battery still does not work normally, the battery may be substandard. This problem is caused by two factors: (1) The line board of the battery is damaged or short-circuited; (2) the battery may be incompatible with your laptop, which is a technical problem and needs to get a new back up battery.

Laptop batteries are a bit confusing to me. Just recently, several months back, I had started my Lenovo laptop which is just over three years old now. When I started the computer I got a message that the battery was no longer charging and showed 67% charged. It would not run without being plugged in and never charged or discharged, staying at 67%. I contacted Lenovo about the battery and was told it needed to be replaced which I thought was ridiculous as I had followed good battery usage guidelines since it was new. I had an older Toshiba laptop, 7+ years old with the same battery and no battery issues. Turns out the battery has a one year warranty, go figure. The cost from Lenovo for their battery was high and I found their higher capacity battery for just over half what they wanted new and online. It was the same exact battery, same model number and same warranty. Hopefully the battery will last longer.

As for this laptop, if the battery can not be replaced by yourself I wouldn't even consider the laptop. You are held captive by the maker at anytime the battery fails and have little control over who may replace the battery. And then there are the many reports of battery problems you are already aware of. Seems like a bad investment to me if you really need a reliable laptop.