The battery on my HP Pavilion 15-AU063NR is no longer working properly. I looked online to order a new one and both the HP website as well as one of their authorized sellers said I needed a battery with the part number 849909-855. I ordered that part via the authorized seller ITPAS (HP said they did not know when the battery would be available when I chatted with them), but when I got the part it didn't work. At first I thought the part was defective so I spoke to ITPAS and got a second battery, but once again this one didn't work either. I then took a look at the original battery and the part number is actually 849909-850, and NOT the 849909-855 that both HP and ITPAS have on their website. Neither the HP nor ITPAS websites have the 849909-850 listed, let alone as the proper battery for my computer.
What is the difference between the 849909-850 and 849909-855 battery? Should the 849909-855 be working, and if so why is it not? If the 849909-855 won't work, where can I get an 849909-850?
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