Originally Posted by cburger
Very interesting regarding the Lithium Iron Phosphate batteries (LiFePO4). Is this the type of battery
that to the lay person is generally referred to as Lithium batteries, similar to what is in my camera
and cell phone
Lithium batteries is a generic name which covers several families/chemistries just as with lead acid batteries there are also variations- for example sealed lead acid, wet cell, AGM
, gel, etc.
Similarly with lithium batteries there are also several different types each with its own characteristics. For example a few of the most common types are lithium cobalt, lithium polymer, lithium manganese and lithium iron phosphate. All of these are broadly termed "lithium ion" batteries.
Lithium cobalt and polymer types are potentially hazardous in large format packs and should never be considered for a boat (if your boat burns to the water
line as a result of a defective battery
I don't think your insurance
company would be too impressed!). Lithium cobalt is the type used in cell phones, cameras, lap tops, etc. You may recall
the Dell computer battery recall
when several batteries caught on fire a few years ago.
Lithium manganese are used in some applications since they are somewhat safer but their draw back is their relatively short cycle life.
Lithium Iron Phosphate (LiFePO4) is the lithium battery of choice since it is the safest type of lithium battery (safer than lead acid) as well has by far the longest cycle life (thousands of cycles rather than hundreds).
There is some more info and comparison on the Boatweb website-
Lithium Iron Phosphate (LiFePO4) Batteries For Boats | Boatweb