Review on Replacement 11.4V 24Wh 2100MAh Laptop Battery For Lenovo ThinkPad T470 T570 T480 T580 P51S P52S TP25 A475 Series (01AV422 01AV423 01AV424 01AV452 01AV490 SB10K97579 61 4X50M08810) by Dre Bhatt

I followed the instructions that came along with the battery (draining and fully charging a few times). The charge, however, doesn't last. With a fully charged battery, I get less than 3 hours even while using airplane mode the entire time. I bought this battery precisely because my old battery was dying. Now I have two batteries, neither of which hold a charge for more than 2 hours with regular use. Buy your replacement battery from Lenovo!