Model 12VDC7ABUPBOX Battery Back-Up System & Enclosure For Magnetic Lock Model 12VDC7ABUPBOX Battery Back-Up System Enclosure For Magnetic Lock. Includes Battery (12VDC 7 Amp) Workable system for 6, 12 & 24VDC! CUSTOMERS OUTSIDE THE CONTINENTAL USA MUST CONTACT US FOR A FREIGHT QUOTE PRIOR TO MAKING A PURCHASE. CONTINENTAL USA SHIPPING PRICES DO NOT APPLY TO PUERTO RICO , ALASKA, GUAM, CANADA & INTERNATIONAL.