House Battery Bank Replacement: What to Consider

Learn the pros and cons of flooded lead acid, AGM, carbon foam and lithium to figure out which house bank setup is best for your needs.

By
Roland Stockham
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0
The batteries pictured are Rolls S6 250 flooded cells, nominally 281 a/hr. They came with the boat and are of unknown age but currently seem to work OK. They are not the cell I would pick as they are a lightweight battery. The clue is that the spec sheet gives a CCA number. True deep cycle cells don't have that. The taller L16-EX is rated at three times the cycle life, about 3,750 cycles to 50% DoD compared to these at 2,000. You really do need to look at the full spec to know what you are getting! In Canada these are currently around $320 com-pared to the L16 at $590. The black battery is the starter battery which is a simple H/D car battery that starts the engine and supplies the windlass. (Photo/ Roland Stockham)
The batteries pictured are Rolls S6 250 flooded cells, nominally 281 a/hr. They came with the boat and are of unknown age but currently seem to work OK. They are not the cell I would pick as they are a lightweight battery. The clue is that the spec sheet gives a CCA number. True deep cycle cells don't have that. The taller L16-EX is rated at three times the cycle life, about 3,750 cycles to 50% DoD compared to these at 2,000. You really do need to look at the full spec to know what you are getting! In Canada these are currently around $320 com-pared to the L16 at $590. The black battery is the starter battery which is a simple H/D car battery that starts the engine and supplies the windlass. (Photo/ Roland Stockham)

The boat: 32-ft. heavy displacement long keel traditional offshore cruiser.

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House Battery Bank Replacement: What to Consider
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Roland Stockham
Roland Stockham
Roland Stockham got his start sailing Olympic-class 470s and Finns in his native England. He started his journey as a voyager crewing for yacht owners sailing to Europe because he was handy at diesel repair. His first cruising boat was a 26-ft. Folkboat with no engine. He lives in British Columbia and sails a 35-ft. Colin Archer design. He is a Royal Yachting Association certified Yacht Master and is qualified to make trans-oceanic deliveries.

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