I used a Belkin replacement laptop supply since... it can be set to such a voltage and has multiple adapters. Radio Shack has such too.
The battery may be a problem. You didn't mention the maker's web site or what country you are looking for this product.
In closing, a failed battery often kills the charger circuit. Just in case it still fails to charge, you know why.
If anyone can help me, I'd greatly appreciate it. I own a Bluegear BGD-501 Laptop. My AC power adapter and battery have stopped working, and I'm trying to find a replacement. The battery's Rating is: 11.1V 6000 mAh and the AC adapter's output is 19V 4.74A. If you find you of these, please e-mail me at firstname.lastname@example.org. Thank you.