EVE LF280K - Capacity Retention and Capacity Recovery; Storage

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-EVE PowerCO,LTD Confidential Proprietary-

Model

LF280K

Specification No

PBRI-LF280K-D06-01

Version

3.12.2 5℃ Charge-discharge Performance

Discharge the cell according to (3.9)at the ambient temperature of 25°C ±2℃;

Rest the cell for 5 h at the ambient temperature of 5°C ±2℃;

Charge to 3.65 V at a constant powerof448 Wand then rest for 30 min,note the energy as Es;

Discharge to 2.5 V at a constant powerof448 W and rest for 30 min,note the energy as Es*;

Discharge energy retention rate =Es*/Eo*100%,energy efficiency =Es*/EsX100%.

3.13 Capacity Retention and Capacity Recovery

3.13.1 25℃ Capacity Retention and Capacity Recovery

Charge the cell according to (3.8)at the ambient temperature of 25°C ±2℃;

Store the cell for 28 days at the ambient temperature of 25℃ ±2℃;

Discharge to 2.5 V at a constant powerof448 Wand rest for 30 min,note the energy as Es*;

Charge to 3.65 V at a constant powerof448 W and rest for 30 min,note as Es;

Discharge to 2.5 V at a constant power of 448 W and rest for 30 min,note the energy as Er*;

Discharge energy retention rate =E₆*/Eo*100%;Discharge energy recovery rate =E7*/Eo*100%.

3.13.2 45°C Capacity Retention and Capacity Recovery

Charge the cell according to (3.8)at the ambient temperature of 25°C ±2℃;

Store the cell for 7 days at45°C±2°C and rest for 5 h at 25°C ±2℃;

Discharge to 2.5 V at a constant powerof448 W and rest for 30 min,note the energy as Es*;

Charge to 3.65 V at a constant powerof448 W and rest for 30 min,note the energy as E7;

Discharge to 2.5 V at a constant powerof448 Wand rest for 30 min,note the energy as E9;

Discharge energy retention rate =E*/Eo*100%; Discharge energy recovery rate =Eg*/Eo*100%.

3.14 Storage

3.14.1 25°C Storage

Charge the cell according to (3.8)at 25°C ±2℃;

Discharge for 60 min at a constant powerof448 W and rest for 30 min;