3 tons wrote:
StirCrazy wrote:
3 tons wrote:
A decent price, but would need to know whether they are pouch cells or cylindrical cells.
3 tons
is anyone using pouch cells? the ony ones I have been sean used are Prismatic cells and cylindrical? pouch cells are a gell based tech that look like they are in a tinfoil pouch.
Steve
Yes, but one must enquire to be sure... This, the only reason why I didn't choose LifeBlue (their previous generation) and I found many other bargain drop-ins on Amazon were pouch-cells as well...I suppose they are just fine, but I noticed shorter warranties and I much prefer cylindrical cells due to their purported better uniformity - JMO
3 tons
really, I wouldnt think pouch cells would be suitable for making this style of battery. there like a tinfoil pouch and the battery is flexable.
I know a lot of people confuse prismatic and pouch but the prismatic is a ridgid case out of steel or hard plastic and is more energy dence than all the other types.
cylendrical does offer some cooling advantages but that is taken away when packed into a case with no airflow, so the cilinderical batteries only advantage is that the automated manufacturing of them is a little faster than Prismatic. there disadvantage is they are heavier than prismatic, can catch fire if there is a issue.
Also for the same output they require way more work to build.
Prismatic have saftey valves to release pressure and reduce the chance of fire, take a little more work to manufacture are light and have a ridgid case so they resist swelling (but still can)
the pouch batterys are the lowest for energy density, require custom manufacturing, but they are flexable and will swell up like a beach ball and not allow any gas release in a breakdown.
I suspect battle born and companies normaly use cylindrical cells for two reasons, 1 they are more readily availble due to massive assembly lines, and two if there is an issue with one cell it has a smaller impact of the overall battery as there are about 100 cells (aprox) in that 100AH 12v battery. the prismatic battery I believe the final assembly is done by hand in a clean room (but I am not sure) so they are a little more expensive initialy but the labour you save on assembly far outweights that, but if one cell goes bad it does have alarger impact as it is 25% of your batter, but change out is very simple.
I just found a video on tesla and that they are possibly moving to Prismatic battery technology. got to go watch it now. ;)
Steve
