Brand new 90.01Wh 15.52V Lenovo L20D4P75 L20M4P75 SB11B79215 ThinkPad P1 X1 Gen 4 Battery. Every L20D4P75 battery has passed factory testing, grade A cells ensure fast charges and low power consumption, built-in circuit protection ensures both safety and stability. CE / FCC / RoHS Certified for safety.