The "HSSDTECH CR2016 CMOS Battery Replacement for Lenovo ThinkPad Yoga 14 Yoga 460 P40 Yoga X1 Carbon 3 4 X1 Yoga 1 2 3 Tablet Extreme P1 1 2 4 L390 Yoga 11e Helix" is a replacement battery, making it the best fit for laptops and tablets that use CMOS batteries.
