BTI battery compatible with Lenovo ThinkPad P15 G1 / G2, P17 G1 / G2, T15g G1 / G2. OEM P/N: 5B10W13958, SB10T83201, 5B10W13959, SB10T83202, L19C6P71, L19L6P71 We recommend: Advance exchange for this product is available directly through Origin Storage throughout the 18-month warranty period. Please note: Please get in touch with us if you have any questions.