LQM® 10.8V 100Wh/8550mAh New CA09 Laptop Battery for HP Probook 600 640 650 G0 G1 Series,Compatible P/N:E7U22UT E7U22AA HSTNN-DB4Y HSTNN-LB4Y HSTNN-LB4X HSTNN-LB4Z 718677-421

I purchased the battery and it worked fine for two years and one month. Now Windows says 0% battery ,4 hours and 19minutes till full charge but no matter how long on two laptop chargers it never charges. It worked great till now, long life on battery. The battery is much bigger than the stock battery and it sticks out the back of the laptop because of the capacity. - Update I opened the battery pack and tested/cycled all the cells. They all tested fine and all 9 cells still had over 2000mhh capacity. The laptop works fine with a new battery so the charging circuit in the pack must have failed.

I installed this battery on my HP Probook G1 about a week ago. I am happy that I upgraded from a 6-cell battery to a 9-cell one as the battery life now I get is significantly longer (adding up to 3 hours of active use; of course, this depends upon screen brightness and the kind of applications being run).I received this battery within a week of ordering via free shipping. I hope that this battery lasts me for another two years.

Worked great at first, but after a year they are worse than the OEM ones were at 7 years old. Not a good life span. Would recommend you keep looking, unless you are selling a laptop or will decommission it within a year.

Battery replaced the dead OEM HP battery without any issue whatsoever. This extended-life battery does hang out of the back of the case (by design) about an inch, but the additional capacity is more than worth it (and, truth be told, the laptop I installed it on is a bit of a boat anchor anyway). This replacement battery provides a full day's worth of power to my laptop under normal use.

Thought would be better on time use, but way better than stock

It's been working well for about a month. Time will tell how well it lasts compared to OEM. Good value for the money.-MT

This lasted exactly 1 year. Now I have about 25 min on a full charge and the computer is giving a battery fail message.

Battery works like it should & with HP no longer making an OEM replacement, it's a great replacement option. The battery does seem to fit a little tighter than the OEM that it replaced.