The battery did'nt last but a week after i received it. I still have to keep my cord plugged in to have battery life. ANd when i unplug it my computer goes dim and battery indicator lets me know i have maybe 6% battery time.
Have had this battery for my Dell Inspiron 1545 for over 10 months now and still working great! I can't vouch for the total value of the battery as I replaced the hard drive with a solid state drive around the same time. The solid state drives uses WAY less resources and made a huge impact on the laptop. So that combined with this battery gives me about... 8 hours of non-intensive (no video, gaming or other resource intensive tasks) charge time, more or less as I usually have the laptop plugged in anyways. FWIW, it still fits my laptop backpack too with the way the battery extends out from the laptop, so no issues there.