Lithium Iron cells
Stumbled across this: eBay $89 gets you sixty 3.2v cells Folks scared of lithium cobalt technology, this is the safer iron based electrolyte.
Forum Discussion
Math
there are 60 cells, like long FAT 'D' cells
each cell is 3.2v 5400MaHrs aka 3.2v 5.4 AmpHrs
4 cells in series, make ONE 12.8v battery 5.4 AmpHrs (like putting two 6s together, only 4 cells instead of 6 cells)
15 (sets in parallel) make one 12.8v battery at (15*5.4)=81Amphrs
this is how lith batteries are built, out of banks of cells
you need to assemble them into the correct configuration
4s15p
the word 'battery' is an old word meaning a group of guns/cannon
the word battery means multiple
a FLA battery has (3) cells if its 6v and (6) cells if it is 12v
each cell is nominally 2.14v when fully charged depending on chemistry
if you have a 100ampHr battery each cell is 100AmpHr at 2.14v
the problem with lithium is making large cells that are stable
hence all the different chemistries that are being developed and phased out or in as need be
liFe is safer but heavier and less energy dense verus weight
than LiPo which is very light weight, high energy dense and likes to to self destruct, because it is not as stable
there are 60 cells, like long FAT 'D' cells
each cell is 3.2v 5400MaHrs aka 3.2v 5.4 AmpHrs
4 cells in series, make ONE 12.8v battery 5.4 AmpHrs (like putting two 6s together, only 4 cells instead of 6 cells)
15 (sets in parallel) make one 12.8v battery at (15*5.4)=81Amphrs
this is how lith batteries are built, out of banks of cells
you need to assemble them into the correct configuration
4s15p
the word 'battery' is an old word meaning a group of guns/cannon
the word battery means multiple
a FLA battery has (3) cells if its 6v and (6) cells if it is 12v
each cell is nominally 2.14v when fully charged depending on chemistry
if you have a 100ampHr battery each cell is 100AmpHr at 2.14v
the problem with lithium is making large cells that are stable
hence all the different chemistries that are being developed and phased out or in as need be
liFe is safer but heavier and less energy dense verus weight
than LiPo which is very light weight, high energy dense and likes to to self destruct, because it is not as stable
