how do u know its not charging battery? being a new battery u may have to discharge battery completely with windows on then recharge it to get the gauge to read correctly.(calabration issue) or does it say pluged in not charging which is a sign that battery is to warm to charge. could be a lot of things can u give any more info.
You don't need to discharge a battery completely. Even though there's a built-in protection in every lithium-based battery that won't let the battery empty, discharging a battery to 0% is a bad advice! To make Windows gauge the battery correctly, just discharge it to, let's say 10% or so. It's enough.
Discharging a battery completely works on old-fashioned nikel-based batteries.