Vanpir L17C4P72 Laptop Battery,15.36V 80Wh 5235mAh Compatible with Lenovo ThinkPad X1 Extreme 1st Gen/2nd Gen ThinkPad P1 1st Gen/2nd Gen Series L17M4P72 01AY968 01AY969 L18M4P71 01YU911 5B10V98091

Review: I bought this battery for my Lenovo IdeaPad laptop and I am very impressed with its performance and quality. It has a great battery life, lasting 5-6 hours offline and 2.5-4 hours online. It is much better than the original battery that came with the laptop, which only lasted 3.5 hours offline and 1-1.5 hours online. The original battery also went bad much faster. It's been a year since I've had this and it's still pretty good and I don't always treat it kindly. I put a lot of pressure on it's usage. The battery was easy to install, as it came with the tools needed and clear instructions. It fits perfectly in my laptop and does not overheat or make any noise. It also charges quickly and keeps power when not in use. I highly recommend this battery to anyone with a Lenovo IdeaPad laptop and needs a replacement or backup battery. This is the best battery I have ever used for any laptop. It is worth every penny and I would buy from this brand again. Hope they keep making laptop batteries and maintain the high quality of their service. Glad you liked this answer!

Perfect replacement for my Lenovo Thinkpad battery. Easy to replace and is working fine weeks later. Very happy!

I got this because the OEM battery started to inflate from the gases being produced because it went bad. This replacement isn't the best, it doesn't hold a charge for long and it feels like I have to keep my laptop plugged in at all times, But it is better than the alternative, no battery. It was easy to install I only wish they gave some replacement screws with it because I lost the original ones.

Works without issues. Cells hold up charge nicely and didn't seem to have battery cycles

This battery worked perfectly for my Lenovo P3 Thinkpad! Easy installation and fits perfectly.

The battery works great, has no issue. Good item!!!

Ignore the good reviews. Of course the battery is going to work great when it first arrives. 6 months later it will go from 100% to 0% in less than an hour, killing the computer mid Zoom-meeting without warning. And the kicker? Good luck trying to find contact info to follow up on the 1-year warranty. You're better off paying twice as much to another vendor that stands by their products, and sells products that work.

For some reason it dies right when it's around 30%. I did the cycle instructions as prescribed. Still better than my last battery which wouldn't charge at all and the computer only worked when the charging cable was plugged in.