VMAX SLR50 12 Volt 50Ah AGM Deep Cycle Sealed Lead Acid Group 21R Battery for Solar Energy Storage Battery UPS Battery Emergency Lighting, Solar Energy Storage Sealed Non Spill able Non Hazardous Construction. Approved for air, ground and maritime transportation. 12V, 50Ah AGM Battery L=7.8" W=6.6" H=6.7". Screw in post Terminals. Float Service Life span of 5 to 8 years.