Hi, I have my HP Pavilion laptop battery - that I replaced less than a year ago - almost dead. I would like to change its cells to a better / higher longevity cells. My dead battery has 3x2 Samsung ICR18650-26H cells. What can I exchange these cells with ? I'm a bit lost when it comes to mAh , capacity and A... I don't wanna use the same cells as I really would like to upgrade my battery. These Samsung cells came with the battery I bought over the internet to replace my original dead battery about a year ago, unfortunately I don't know what cells that original HP battery had since I don't have it anymore. The original battery used to last up to 4 hours...which I was never able to achieve with this bad replacement battery. any advice please on a new cells choice ? Thanks,