I'm looking at the lithium iron batteries and wondering why go fast boats are not using them. You can replace a 76amp hour battery with two of these lithium iron batteries and save 43 pounds per battery that you replace. They are spendy but who wouldn't love to loose some weight. They are suppose to be very durable. Anyone using them?

When lithium ion batteries fail they can start huge fires and go boom.....

+1..... Look at the mishaps from the Boeing 787 not something I want on my boat

FYI... Just so you know its "Lithium Ion" Not Iron

I am not referring to lithium ion I am referring to lithium iron two different types of batteries. I am obviously aware of the dangers of lithium ion but the lithium iron batteries are suppose to be very stable.

http://www.batterystuff.com/batterie...36l3-bs12.html lithium iron phosphate

I stand corrected.... First time I have seen these
I would be interested in how well they would perform vs optima

Other than being expensive they seem to be the perfect battery in almost every aspect. If you read up on them they seem to be the ultimate starting and deep cycle and will not lose energy when stored. Inspector you should show this to Boeing...JK. I figure I could offset the weight I'm going to add to my boat with the options I want to add.. More stereo, dual hydraulic steering, and K-planes by switching out my two batteries for 4 of the LiFePO4 36 AH batteries.

Get the current issue of Professional Boat Builder magazine. There is an excellent article on the advantages of Lithium Fe batteries over lithium ion in boats. There are major differences between the two types. I use Li-Fe batteries in my RC boats, and they have been super. The larger ones for our full size boats are starting to become a little more affordable