The HD-545 is an XS Power battery installation accessory. XS Power lists it as: 545 Series Billet Aluminum Hold Down. The specifications below come directly from XS Power's June 2026 distributor data. Verify voltage, group size, polarity, dimensions, and application requirements before ordering.This Listing Includes: (1) XS Power HD-545 545 Series Billet Aluminum Hold DownSpecifications Model HD-545 Product Type Terminals, Hardware & Hold-Downs Package Length 10.3 in. Package Width 4 in. Package Height 1.6 in. Package Weight 2 lbs. UPC 692209054047 Warranty 1 year — view warranty (PDF) Available from JS Alternators.PROP 65 WARNING: This product can expose you to chemicals including lead and lead compounds, which are known to the State of California to cause cancer or birth defects or other reproductive harm. Wash hands after handling.For more information, visit www.P65Warnings.ca.gov.