galderdi Regular Member Joined: 12/08/2016 Location: AustraliaPosts: 99
Posted: 12:56am 23 Feb 2022
As Davo says the Lifepo4 are the way to go for a compromise between safety and function. They are not as good for energy density/range. But the chemistry does not catch fire. However the plastic case can still burn. So it's not like there is no risk, its just not the unstoppable type of risk. They are a leading contender for my project but I'm not locked in just yet. The particular cell I am tending towards is a Headway cell. They are great because they have screw terminals top and bottom. This allows a physical mounting point and eliminates the need for spot welding cells together.
Commercial manufacturers use various chemistries but they tend towards better energy density/ range at the expense of some safety.
Looks like I need to purchase a tractor to complete my range of metal working tools LOL.