ULTIMO® Safety test results of prismatic cell

In both the overcharge test, the overdischarge test and the external short-circuit test, ULTIMO® does not show ignition and rupture, indicating excellent safety.

Test	Condition	Result
		Ignition	Rupture
Overcharge	Current： 200 A Charge rate： 250% Maximum voltage： 20 V Using narrow jig	None	None
Over discharge	Current： 200 A Voltage： 0 V	None	None
External short circuit	Short circuit resistance: 3 mΩ Atmosphere temperature: 55℃	None	None

• Cycle test result of ULTIMO® prismatic cell

  Even if charging and discharging at 200 A is repeated 1 million times, remarkable deterioration is not seen.

  

  Test cell	ULTIMO® Prismatic 2300 F
  Test conditions	Charge：CC 200A, 3.8V / Discharge 200A, 2.2V / No pause

  The test results are those observed under the test conditions described and do not guarantee similar results under different conditions.

• Float test result of ULTIMO® prismatic cell

  Noticeable deterioration is not seen even after 10,000 hours in 70℃ 3.8V float test.

  

  Test cell	ULTIMO® Primatic2300F
  Test conditions	Voltage：3.8V / ambient temperature：70℃

  The test results are those observed under the test conditions described and do not guarantee similar results under different conditions.

• Storage test result of ULTIMO® prismatic cell

  Even when left for 10,000 hours in an environment of 70℃, remarkable deterioration is not seen.

  

  Test cell	ULTIMO® Primatic2300F
  Test conditions	70℃ Environment preservation

  The test results are those observed under the test conditions described and do not guarantee similar results under different conditions.

• Self-discharge test result of ULTIMO® prismatic cell

  Even when left at 3V for 10,000 hours, noticeable deterioration is not seen.

  

  Test cell	ULTIMO® Primatic2300F
  Test conditions	Voltage: 3.8V / ambient temperature: 25℃.

  The test results are those observed under the test conditions described and do not guarantee similar results under different conditions.