View Here : Battery Cell 2170
TESLA’S NEW 2170 BATTERY CELL PACKS MORE POWER. It sounded like a crazy idea back in the early 2000s, using “laptop batteries” to power the Tesla Roadster. In fact however, it was quite sane.
Tesla’s new 2170 battery cell packs more power. Posted on February 28, 2017 by Charles Morris It sounded like a crazy idea back in the early 2000s, using “laptop batteries” to power the Tesla Roadster. In fact however, it was quite sane.
Production of 2170 cells for qualification started in December and today, production begins on cells that will be used in Tesla’s Powerwall 2 and Powerpack 2 energy products.
The new “integrated battery module” concept is using the same ‘2170’ format as Tesla and Panasonic’s new cell, but the company is referring to it by the more traditional ‘21700’:
The 2170 cylindrical cells are bigger than the previous 18650 cells, so it stores more energy. However, the video doesn’t contain a capacity test. However, the video doesn’t contain a capacity ...
The new 2170 battery cell, named after its 21 mm by 70 mm dimensions, is thicker and taller than the ‘18650’ cell format it replaces, which has served as the standard lithium-ion format for ...
From its learnings with 18650, Tesla developed the 2170 cell as the new base unit for the Tesla Model 3, Powerwall 2 and Powerpack 2 products.
It's worth noting Jason Hughes's teardown of the 100kWh battery pack - he notes that it is 102.4 kWh of actual capacity with 8,256 cells, which suggests each cell is STILL only 258 to 276 Wh/kg for 12.4 watt-hours divided by 0.045 - 0.048 kilograms (as Panasonic 18650s are typically around 45-48 grams).