These batteries have been used in off-grid power systems in remote cabins for the past 25 years with great success. Because of their low initial cost, they are the most affordable true, deep cycle batteries. The T-105 battery is designed to be used in small electric vehicles where they are cycled heavily and last about 2 years. Inn a remote home system where they are cycled down 20% every day they can last 3 to 6 years. The L-16 battery is designed for electric floor scrubbing machines. They are a heavy-duty cousin of the T-105 with much thicker lead plates and nearly twice the capacity. The L-16 is available in a standard and a high-quality version. The standard version holds more electrolyte and has a slightly longer life.
The SCS-series 12-volt marine batteries are Trojan's top of the line 12-volt deep cycle batteries. They are designed for marine and RV use and work well in systems where 110 to 130 amp-hours is enough storage.
Trojan 30XHS Deep Cycle Lead Acid Battery 
These batteries have been used in off-grid power systems in remote cabins for the past 25 years with great success. Because of their low initial cost, they are the most affordable true, deep cycle batteries. The T-105 battery is designed to be used in small electric vehicles where they are cycled heavily and last about 2 years. Inn a remote home system where they are cycled down 20% every day they can last 3 to 6 years. The L-16 battery is designed for electric floor scrubbing machines. They are a heavy-duty cousin of the T-105 with much thicker lead plates and nearly twice the capacity. The L-16 is available in a standard and a high-quality version. The standard version holds more electrolyte and has a slightly longer life.