How to deal with Toshiba PA2522U battery charging problem

You may always meet the Toshiba PA2522U battery charging problem. It is a new model and we do not have a lot of experience with these laptops. The customer complained that the laptop will not charge the Toshiba PA2522U battery when it is plugged into the AC outlet.
The laptop will not turn on when you try to start it from the Toshiba PA2522U battery. When the laptop is turned off and plugged into the AC outlet the laptop battery charge LED doesn’t light up. You know that the Toshiba PA2522U battery is not charged and the LED should light up when you plug the laptop into the AC outlet. The laptop starts fine when it is plugged. When you move the mouse over the Toshiba Power Icon in the lower right corner, the balloon will pop up and there is a line in there: Toshiba laptop battery Remaining: N/A.
You can easily fix the problem just by updating the BIOS. Toshiba says that the BIOS version should be at least v1.30. So, go to Toshiba PA2522U battery website and click on Downloads. Select your laptop model and find any downloads for the BIOS. In the BIOS change history you will see the description of Toshiba PA2522U battery changes.
Several observations:
1. It used to be that the Toshiba PA2522U battery would recharge best when the computer was closed and in “sleep”. Then, the flashing would never occur, the laptop battery LED would be orange until it charged and went blue. More recently, though, the flashing pink has occurred even when the computer was in sleep.
2. The problem with the charger seems to happen much much less when the Toshiba PA2522U battery is at 100%. That means that my best strategy is to hibernate the computer if I’ve been using it off Toshiba laptop battery power, then plug it in so it charges (including unplugging and replugging if the Toshiba PA2522U battery LED flashes orange) until the laptop battery is back to 100%, and then using it off the AC after that. Even then, sometimes it doesn’t register the laptop ac adapter and the pink flashing happens again, but maybe half the time when the Toshiba PA2522U battery is full it does register the adapter.
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