ELK-1250: 12 Volts @ 5 AH (20 hour rate) ELK-1280: 12 Volts @ 8 AH (20 hour rate) ELK Sealed Lead Acid Batteries are excellent for the following applications with regard to size, Amp hour rating, and proper terminal connections: battery backup (for Access Control Systems, Fire Alarm Systems, and Security Alarm Systems), emergency light F1-Faston Tab No. 187 Terminals 2 Year Warranty UL listed component