YUASA CODE: Y0.8-12. For standby power this range has a nominal 5 - 8 year life. (12V 0.8Ah). Fully Sealed (cannot spill) - Rechargable - Deep Cycle battery. AGM, DEEP CYCLE BATTERIES. AGM are 'Absorbed Glass Mat' The Plates are wrapped in the Mat and electrolyte is absorbed into it - protecting the plates.