I was recently researching for information on a rumored hot new battery product, and in doing so I looked thru the offerings on several of the boat related forums. I was somewhat disappointed in the scope of the information I found on these boating forums, and the fact that much of the information was so scattered thruout the forums. This has prompted me to start this new subject thread devoted to the subject of the BATTERY, both existing ones and new technologies, as we require in the marine industry. I must admit there was another impetus for my starting this new thread, a really excellent article in the recent Feb/March '08 issue of Professional Boatbuilder by Nigel Calder. The article is entitled "Breakthrough" and should be available at the ProBoat website by clicking 'view digital issues', then Feb/Mar, and use the navagation arrows at the top of the page to go to the table of contents find 'Breakthrough', then click it. You won't regret it He is always so comprehensive in his contributions to electrical subjects, as you might already be aware of from his series of articles on a related subject matter, Diesel-Electric Propulsion. I might suggest that as we add a specific new battery discussion to this thread, either thru cross-references to other discussions already posted on this forum, or from outside sources, that you 'title' the posting with the battery type discussed, ie, Li-Ion, lead acid, etc…..(just a suggestion).