Thanks very much for posting this discharge chart. It seems to be similar to others I've seen so far, which isn't much at this early stage. As @SD_Alias mentioned, their large discharge range will be problematic for many applications. It seems that the 'goldilocks' voltage zone maps to about two thirds of the cell's real capacity. If sodium ion cells come down sufficiently in price, the easy solution would be to compensate by oversizing the battery pack - at least for applications where size or weight weren't an issue. That should also allow an existing LiFePO4 BMS to be used
Even with bad energy density they are still worth the hype if its not toxic for environment and not flammable. Great for solar systems and maybe not that great for ev.
The question is how the capacity can really be utilised. If you discharge these cells to 1.5 V, this corresponds to 6V for a 12V battery. And fully charged 16V. Which end devices can use this bandwidth sensibly? Wouldn't it ultimately be necessary to measure the capacity that can be achieved in the voltage range of around 11-14V?
They seem to discharge more like a LA battery. Do you know if they are ok to discharge fully repeatedly. These are fascinating cells. Much more environmentally friendly than Li or even Pb cells.
Thanks very much for posting this discharge chart. It seems to be similar to others I've seen so far, which isn't much at this early stage. As @SD_Alias mentioned, their large discharge range will be problematic for many applications. It seems that the 'goldilocks' voltage zone maps to about two thirds of the cell's real capacity. If sodium ion cells come down sufficiently in price, the easy solution would be to compensate by oversizing the battery pack - at least for applications where size or weight weren't an issue. That should also allow an existing LiFePO4 BMS to be used
Keep up the good work RM. We need honest user experience to counter the mega BS hype surrounding SIBs just now
Even with bad energy density they are still worth the hype if its not toxic for environment and not flammable. Great for solar systems and maybe not that great for ev.
The question is how the capacity can really be utilised. If you discharge these cells to 1.5 V, this corresponds to 6V for a 12V battery. And fully charged 16V. Which end devices can use this bandwidth sensibly? Wouldn't it ultimately be necessary to measure the capacity that can be achieved in the voltage range of around 11-14V?
They seem to discharge more like a LA battery. Do you know if they are ok to discharge fully repeatedly. These are fascinating cells. Much more environmentally friendly than Li or even Pb cells.
OBTW RM when making a vid dont stand in front of back light window, it spoils the auto on you camera. Face the window with the camera in front of you