Date: 14/08/2009

Lithium ion secondary battery with olivine-type lithium iron phosphate

Sony has launched a new lithium ion secondary battery that combines high-power and long-life performance, using olivine-type lithium iron phosphate as the cathode material due to its robust crystal structure and performance, even at high temperatures.

This new cathode material with Sony's particle design technology that minimizes electrical resistance to deliver high power output, and also leveraging the cell structure design technology. Sony accrued developing its current "Fortelion series" lithium ion secondary battery line-up.

This new battery is able to charge rapidly, and provides a stable discharge of voltage, used in motor driven devices such as power tools, and then expanded to a wide range of other mobile electronic devices. With lithium ion secondary batteries deliver both compact size and high capacity, their usage continues to diversify and grow.


Key features are,

Power density: 1800W/kg (20A continuous discharge)
Long-life: more than 80% capacity retention after 2,000 charge-discharge cycles
Rapid charging: 99% charge completed in 30 minutes


Key spec's are,

Cell type: cylindrical type 18650
Size Diameter: 18mm, height 65mm
Capacity (0.2ItA): 1.1Ah
Nominal Voltage: 3.2V
Energy Density: 95Wh/kg
Power Density: 1800W/kg
Max. continuous discharge current: 20A
Weight: 40g