For long life and dependability, Shelter Island Marine Electronics recommends Lifeline Marine Deep Cycle AGM Batteries. Lifeline Batteries produces the highest quality deep cycle AGM battery available.

Lifeline batteries are particularly suitable for marine applications due to their routine 5 to 8 year lifespan.

Email us or call us today at 619.223.2182 and we'll personally visit your vessel to evaluate your battery bank situation and we'll give you a no obligation free quote.

Southern California's Full Service
Marine Electronics Dealership