Amazon.com: PK03XL HSTNN-DB6S Laptop Battery for HP Spectre Pro X360 G1 G2 13-4000 4100 Series 13-4103dx 13-4003dx; HP Spectre 3 Pro X360 G1 G2 788237-2C1 789116-005 TPN-Q157 : Electronics
Going on a week and half... Charged to 80% and have used this laptop multiple times.... Still almost 50%!! Without that Sphinx fix, it would have been DEAD almost a week ago!
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