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![Dual Pro B.O.S. (Battery Optimization System) - 12V - 3-Bank [BOS12V3] Entertainment | Stereos All flags measure 12](https://cdn.shopify.com/s/files/1/0513/2618/9750/products/80777XL.jpg?v=1607316917)
All flags measure 12" x 18" with brass grommets
Easy-To-Read Backlit LCD Screen
ARG-1003 Sight Glass Fits ARG-1000
Safety: UL
Series 50 All Purpose Block - Fiddle - Becket
Dual Pro B.O.S. (Battery Optimization System) - 12V - 3-Bank [BOS12V3] Entertainment | Stereos All flags measure 12" xB. O. S. (Battery Optimization System) 12V 3 Bank B. O. S. actively shuttles energy between batteries to keep the pack balanced, increasing battery strength and longevity. Batteries in a pack will become out of balance and the pack is only as good as its weakest link. In watercraft applications, this is further compounded when the trolling motor battery is used for peripherals and or to assist the cranking battery. B. O. S. actively shuttles energy as
