Receive a 10% discount on all of our batteries by entering the coupon code "NHU" at checkout. Casil is highly regarded as one of the most reliable sealed lead acid batteries on the market. Perfect for burglar alarm panels, residential alarm panels and commercial alarm panels. We carry all of the most popular sealed lead acid batteries including: Casil Ca1240, Casil Ca1270 and Casil Ca631 alarm batteries. Check out our guide to installing Casil Batteries.