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 Gary Hall

My HP ProBook flashed an error message that said my original battery was going bad. Rather than buy an expensive one from HP or a distributor, I found this one on Walmart for half the price and with good reviews. It arrived promptly, fit perfectly, and charged up just fine. My ProBook didn't like it much. It sent me another message that it detected a non-HP battery. But that has not caused any performance issues so far. I haven't had this one installed long enough to rate its durability or battery life yet. But going on the assumption that it will last at least the five years the original one did.