BTI SH03XL-BTI 11.55V 57.9WHR LI-ION BATTERY - Compatible Model SPECTRE 13-AC002NA SPECTRE X360 13-AC003LA SPECTRE X360 13-AC003TU SPECTRE X360 13-AC004TU SPECTRE X360 13-AC005TU SPECTRE X360 13-AC016TU SPECTRE X360 13-AC017TU SPECTRE X360 13-AC018TU SPECTRE X360 13-AC019TU SPECTRE X360 13-AC030TU SPECTRE X360 13-AC031TU SPECTRE X360 13-AC032TU SPECTRE X360 13-AC033DX SPECTRE X360 13-AC048TU SPECTRE X360 13-AC049TU