Auto-Empty System Battery Pack

The battery pack that powers your BU3500 Series Cordless Vacuums. IMPORTANT NOTE ON COMPATIBILITY: Please check handheld vacuum and battery rating labels to confirm compatibility. Remove the battery pack and check the battery pack model number. The battery pack name should read XBTR625KSLN.”Compatible with:

BU3521, BU3120, BU3523 (Because of generational update to BU3120 please remove the battery pack and check the rating voltage and battery pack model number. If the rating voltage is 18V or the battery pack model is XBATR525SL or BATR525SLN, then XBTR625KSLN is NOT compatible. If the rating voltage is 21.6V or the battery pack model is XBTR625KSLN, then XBTR625KSLN IS compatible.)Model:XBTR625KSLNColor:BlackWeight:1.26 lbsProduct Dimensions:13.98 in L x 10.04 in W x 14.17 in HHazmat Class:Lithium Ion Battery