The Following Models Are Compatible :
X Series:
X280 (Type 20KF, 20KE)
x390(Type 20Q0, 20Q1,20SC, 20SD)
X395
X390 Yoga
X1 Carbon 6th(Type 20KH, 20KG)
X1 Carbon 7th(Type 20QD, 20QE,20R1, 20R2)
X1 Carbon 8th(Type 20U9, 20UA) Gen
X1 Yoga 4th (Type 20QF, 20QG, 20SA, 20SB)
X1 Yoga 5th(Type 20UB 20UC) Gen
X13 Yoga Gen 1
X13(Type 20T2, 20T3,20UF, 20UG)

L Series:
L13(Type 20R3, 20R4)
L13 Yoga(Type 20R5, 20R6)
L13 Gen 2 (Type 20VH, 20VJ)
L13 Yoga Gen 2 (Type 20VL, 20VK)

T Series:
T14s (Type 20T0, 20T1,20UH, 20UJ)
T490s(Type 20NX, 20NY)
T495s(Type 20QJ, 20QK)

A Series:
A285(Type 20MW, 20MX)
A485

ThinkPad Gen 2 EX280 FRU: 01YU026 Compatible FRUs: 01YU028 01LX672 01LX667 01LX670 01LX671 01YU027 01YU031 01YU029 01YU030 01LX668 01LX669