Sealed Lead Acid are resistant to vibration, shock, chemicals, and heat this makes it very versatile.  The Sealed Lead Acid technology has a low self discharge, which means it hold a charge longer than other rechargeable chemistries such as ni-cd or nimh.   The electrolyte is suspended in a fiberglass mat separators which acts like absorbent sponges.  Sealed AGM batteries are of the chemical compounds lead dioxide, sponge-lead.  Shipping is not a problem with having a shipping class rating of 60 which is non hazardous and non sailable.   Comes in a wide range of sizes and voltages 2 volts to 12 volts and 1 amp to 200 amp.  

The 12 volt 15 amp battery has been an great seller in our sealed lead acid battery line up in the recent months.  The reason it is so popular is it has the same dimensions as 12 volt 12 amp battery,  with 3 amps running time longer.  This is a great for alarm systems because when the power is out who wants their house to be left vulnerable.  Purchase the 12 volt 15 amp sealed lead acid battery for your alarm system.  

Replacements

CSB Battery of Americs HR1251w

Interstate Batteries ASLA0057

Powersonic PS-12120