Review on 12 Months Warranty HP ProBook 440 G2 450 G2 TPN Q139-Q143 Battery Replacement - VI04 756743-001, 756745-001, 756479-421 HSTNN-DB6K HSTNN-LB6K by Aaron Gonzales

Lasted 6 months. You get what you pay for. Unfortunately, it's impossible to find a genuine battery for sale for such an old laptop.Update: the company contacted me and had me return the battery and offered me a refund or replacement. I opted for the refund and it was just received today. I updated the rating to 3 stars to encourage good customer service habits and for the fact that if you want to explore contacting the company for a faulty product in under a year, it may yield favorable results. Good luck!