Testing method and conditions
Performance
Standard test conditions
Measuring Equipment requirements
Standard Charge
Electricity Characteristics
The battery for test must be new produced no more than 1 month. Unless otherwise specified, all tests stated in this Specifi-
cation shall be proceeded in the following conditions:
Temperature of 23±2
℃
, the relative humidity of 45%~65%RH, atmospheric pressure is 86kPa~106kPa
。
• Slide caliper should have an accuracy of the grade 0.01mm or higher.
• The multimeter should have an accuracy of the grade 0.5 or higher. The impedance when testing voltage should be more
than 10KΩ/V.
• The impedance meter with AC 1 kHz should be used.
• For the battery testing system, the accuracy of current should be more than ±0.1%, the accuracy of voltage should be more
than ±0.5% and the accuracy of time should be more than ±0.1%.
• The thermometer should be have an accuracy of the grade 0.5
℃
or higher.
1.0CmA (7500mA) 16.8V (CC-CV) ,Cut-off current is 0.05CmA
。
Note:
Charging equipment special for Lithium-ion Polymer battery must be used only for the above charging.
Standard Discharge
1.0CmA(7500mA) CC Discharge cut-off Voltage 12.0V
Standing Time
Unless otherwise specified, between battery charging and discharging, there is a 30min interval or more.
Item
Testing method
Requirement
Open-circuit voltage
≥
16.4V
Measure the open-circuit voltage of the battery
within 24 hours after the Standard Charge
AC Resistance
Resistance of
Battery Pack
≤
23.4mΩ
After half charge, measure the resistance through
the discharge wires at AC 1KHz ,23±2
℃
Capacity
Discharge Capacity
≥
100%
(
min Capacity
）
Discharge the battery with a constant current of
0.2CmA(1500mA) to 12.0V after Standard
Charge and rest 30min
Cycle Life Performance
Cycle Life
≥
300 cycles
Discharge Capacity
≥
80%
Measure capacity under the cycle conditions
described below, until the discharge capacity
≤
80% for three times. Cycle conditions: Standard
Charge
（
CC-CV
，
7500mA
，
16.8V
) ,
Rest for
30min; Discharge with 1C, 12.0V cutting off.
Testing temperature is 23±2
℃
Discharge Temperature
Characteristics
-20
℃
≥
60%
25
℃
≥
100%
60
℃
≥
95%
Heat or cool the battery to the testing temperature
within 30min and rest for 3 hours after standard
charge at 23±2
℃
, then discharge at 1.0CmA .
When a test finished, charge the battery after
rested 2 hours at room temperature
(23±2
℃
)
MODEL
STOCK NO
:
:
PX7500WB
900.869.503.159
Battery Solutions
www.power-xtra.com