Nominal standby life: 5–8 years. Low pressure relief valve. Solar Sirens (including Friedland Response SASS, SA3CU, SA5CU, SK/SL3CU, SK/SL5CU, SA3, SA5, SAP1). Product: 1 × 6V 1.2Ah (1.3Ah) AGM Deep Cycle Battery.
eBay