Bladez Electric High Performance Replacement Batteries For:XTR Comp,XTR Comp II,XTR S 450,XTR Lite,	XTR Street II,XTR Transport,Bladez XTR-SE 450,XTR Comp 450,XTR Street 450,XTR-HD 550,XTR-S Transport 450. (2) 12V 12ah Beiter DC Power (2) Pack 12V12ah Rechargable Maintenance Free