fluid2150
10 W
Why would it be cooked?
Any current Lithium chemistry doesn't like being discharged that low, and it can start to cause cell imbalance. Lifep04 is a bit more forgiving, which is why I say see how you go...to be fair, I would be doing exactly the same thing, but it's just worth mentioning and to be prepared for the possibility of it not having the same capacity as when it was new any more.fluid2150 said:Why would it be cooked?
Cowardlyduck said:Just don't leave it running1abv said:Actually fits perfectly, Don't notice it while peddling.
1abv said:Good news.. Always good to have competition.. hows the pricing?
I call BS. If they are talking about 18650 cells, there are no higher capacity and higher c cells than the Sanyo/Samsung/LG 3500mah cells. These are still the top of the pick after 5+ years. The only 'higher c rate/higher capacity' cells are larger 2170 cells, but they are not the same size so not a direct comparison.Theodore Voltaire said:...They have higher c, higher capacity cells that they could build a Bomber pack...
Cowardlyduck said:I call BS. If they are talking about 18650 cells, there are no higher capacity and higher c cells than the Sanyo/Samsung/LG 3500mah cells. These are still the top of the pick after 5+ years. The only 'higher c rate/higher capacity' cells are larger 2170 cells, but they are not the same size so not a direct comparison.Theodore Voltaire said:...They have higher c, higher capacity cells that they could build a Bomber pack...
If they can tell you exactly what cell they use, that should be revealing.
Also note...I've made several 49AH packs for both the Fighter and Bomber...that's about the max capacity that can be fit with current top of the line cells.
Cheers
Rix said:Cowardlyduck said:I call BS. If they are talking about 18650 cells, there are no higher capacity and higher c cells than the Sanyo/Samsung/LG 3500mah cells. These are still the top of the pick after 5+ years. The only 'higher c rate/higher capacity' cells are larger 2170 cells, but they are not the same size so not a direct comparison.Theodore Voltaire said:...They have higher c, higher capacity cells that they could build a Bomber pack...
If they can tell you exactly what cell they use, that should be revealing.
Also note...I've made several 49AH packs for both the Fighter and Bomber...that's about the max capacity that can be fit with current top of the line cells.
Cheers
I call BS on your BS, these 18650 cells are 3550mah capacity. :lol: but they are only a 2.5C discharge rated cell.
https://www.18650batterystore.com/collections/18650-batteries/products/panasonic-ncr18650g-3550mah-8a
Ok sure, you win with 50mah and a time machine . Good luck actually finding a decent amount of those cells to buy anywhere. :lol:Rix said:I call BS on your BS, these 18650 cells are 3550mah capacity. :lol: but they are only a 2.5C discharge rated cell.
https://www.18650batterystore.com/collections/18650-batteries/products/panasonic-ncr18650g-3550mah-8a
If they want max capacity from a 2170 cell there is really only one sensible option...the Samsung 50E. Anything else will be too low capacity for the volume IMO.Theodore Voltaire said:It's quite possible this 21700 is what they showed me, I was thinking it was gray, or brown. I remember he said it was 4200 mah, and 45 amp discharge.
Cowardlyduck said:If they want max capacity from a 2170 cell there is really only one sensible option...the Samsung 50E. Anything else will be too low capacity for the volume IMO.Theodore Voltaire said:It's quite possible this 21700 is what they showed me, I was thinking it was gray, or brown. I remember he said it was 4200 mah, and 45 amp discharge.
Cheers
1abv said:
3 way drag race....
If they don't want to build the pack to the maximum possible capacity/size, then yes this makes sense.Theodore Voltaire said:I'm guessing reason they don't use those Samsung cells is probably because of the low discharge rate. 9.8 amp vs 45 amp.
If we lived in the same country, I would have you build me a 20s 5P out of these cells. Both my P7Rs are about the same width as my Bomber frame, and there would be enough room for single layer in that frame. With the right motor and controller, it would be a runner with 1.8kwh without the funky voodoo two layer stackCowardlyduck said:If they don't want to build the pack to the maximum possible capacity/size, then yes this makes sense.Theodore Voltaire said:I'm guessing reason they don't use those Samsung cells is probably because of the low discharge rate. 9.8 amp vs 45 amp.
However all it would take is a 10P pack and you've got 100A of discharge...way more than a typical Bomber really needs.
I already mocked this up some time ago and it's entirely possible using 2170 cells. Using 50E cells this would be a 20S10P - 3.6Kwh pack. An absolute monster!
This is only one layer.
Bomber 21700 Battery.JPG
Honestly this is insane, but I will build it for anyone interested in Australia. It would give a real world 180-250km range.
Cheers
I still haven't figured out a way to ship international...maybe one day!Rix said:If we lived in the same country, I would have you build me a 20s 5P out of these cells. Both my P7Rs are about the same width as my Bomber frame, and there would be enough room for single layer in that frame. With the right motor and controller, it would be a runner with 1.8kwh without the funky voodoo two layer stack
Cowardlyduck said:I still haven't figured out a way to ship international...maybe one day!
But yeah, 5P using the 50E would be awesome in a Beta/P7!
Cheers
1abv said:Thats what my pack is made of except its not 10 but 7... 10 would be nooiceee!!