The Casil CA445 is a 4V, 4.5Ah SLA (Sealed Lead Acid) Alarm Battery. The Casil CA445 is a maintenance free SLA Battery that is an ideal replacement for any other 4 Volt 4.5 Ah hour battery with F1 terminal connectors. About Casil Batteries Casil has provided more than 35 million batteries to the worldwide fire and intrusion market since 1998. During the past 23 years, CASIL has earned the approval of nearly every large fire/intrusion alarm manufacturer . In addition, CASIL has supplied the largest global security services companies as well. Casil has a world class manufacturing plant in Huizhou, China that practices full Kaizen principles for continuous improvement and automation where possible. Specifications AGM - Absorbed Glass Mat High PerformanceMaintenance FreeResistant to LeakingPre-Charged for Immediate UseTerminal: F1Weight: 1 LBSLength: 1.86" x Width: 1.87" x Height: 3.98" Compatible Replacement For: Fi-Shock SS-440 Compatible Replacement For: Fi-Shock SS-440 USES Casil Batteries are used for: 4v 4.5ah battery, zebra 2 mile fence battery, Toyo 2FM4.5, Leoch LP4-4.5 USES Casil Batteries are used for: 4v 4.5ah battery, zebra 2 mile fence battery, Toyo 2FM4.5, Leoch LP4-4.5