Replacement Acer AP16K4J Chromebook Spin 11 R751T Laptop battery - Compatible Part Numbers: AP16K4J, Compatible Model Numbers: Acer Spin 11 R751T, Chromebook Spin 11 R751T-C0QV, Chromebook Spin 11 R751T-C4XP, Chromebook Spin 11 R751T-C6LD