4 ms·

That's interesting, to say the least. You can't just call Saft and order some cells then? They won't sell them to you?

owenversteeg 10y ago
I'm not sure about Saft in particular; with how ridiculously bad their tech is I'm convinced they are a French government jobs program, and nobody I know has ever voluntarily used their cells (except years ago for non-rechargeable.) For reference, their highest energy density Li-Ion cell is 169 Wh/kg. I'm not sure how they managed to be that bad; I just literally taped a rock (14g) to the cheapest battery in my apartment (45.8g, the $2.49 NCR18650PF) and the combined energy density of my new Rock-Lithium-Ion Battery is 170 Wh/kg, better than that of Saft's highest energy density rechargeable cell. But yes; if you want newer battery technology direct from the manufacturer, you'll probably be flat-out ignored even if you're inquiring at a medium-large scale. The way to do it is to hunt around for semi-reputable resellers, who will usually give you what you want at an acceptable price.
- mcguire 10y ago
  My understanding is that the reselling behavior is the bane of the e-cigarette market. 18650's that you can get from most resellers may have good specs printed on them, but the battery won't necessarily have anything to do with the wrapper. Edit: https://www.e-cigarette-forum.com/forum/blog-entry/list-of-battery-tests.7436/#subs https://www.e-cigarette-forum.com/forum/blog-entry/list-of-b...
- Keyframe 10y ago
  That's quite insightful. I know next to nothing about that industry and/or battery (modern) tech. I know people have always said Saft was a reputable battery company (around motorised speciality vehicles/grip for film industry). I have no idea why, considering what you've just said.
  - extrapickles 10y ago
    Its likely Saft optimizes for rough environments rather than energy density. Things like stronger casings, more insulation between anode/cathode, wider temperature ranges are more useful to some applications than energy density. I've primarily seen them used for industrial/military applications.
    - Keyframe 10y ago
      You're probably right. Just looking at their site and applications they're touting makes it sound legit.

I'm not sure about Saft in particular; with how ridiculously bad their tech is I'm convinced they are a French government jobs program, and nobody I know has ever voluntarily used their cells (except years ago for non-rechargeable.) For reference, their highest energy density Li-Ion cell is 169 Wh/kg. I'm not sure how they managed to be that bad; I just literally taped a rock (14g) to the cheapest battery in my apartment (45.8g, the $2.49 NCR18650PF) and the combined energy density of my new Rock-Lithium-Ion Battery is 170 Wh/kg, better than that of Saft's highest energy density rechargeable cell. But yes; if you want newer battery technology direct from the manufacturer, you'll probably be flat-out ignored even if you're inquiring at a medium-large scale. The way to do it is to hunt around for semi-reputable resellers, who will usually give you what you want at an acceptable price.

mcguire 10y ago
My understanding is that the reselling behavior is the bane of the e-cigarette market. 18650's that you can get from most resellers may have good specs printed on them, but the battery won't necessarily have anything to do with the wrapper. Edit: https://www.e-cigarette-forum.com/forum/blog-entry/list-of-battery-tests.7436/#subs https://www.e-cigarette-forum.com/forum/blog-entry/list-of-b...
Keyframe 10y ago
That's quite insightful. I know next to nothing about that industry and/or battery (modern) tech. I know people have always said Saft was a reputable battery company (around motorised speciality vehicles/grip for film industry). I have no idea why, considering what you've just said.
- extrapickles 10y ago
  Its likely Saft optimizes for rough environments rather than energy density. Things like stronger casings, more insulation between anode/cathode, wider temperature ranges are more useful to some applications than energy density. I've primarily seen them used for industrial/military applications.
  - Keyframe 10y ago
    You're probably right. Just looking at their site and applications they're touting makes it sound legit.