Spec.No: MGL9050
Page 6 of 11
DATE:
28/07/2020
3.4
Appearance
There shall be no such defect as flaw, crack, rust, leakage, which may adversely affect commercial
value of battery.
3.5
Initial
Performance
Test
Table
2
Item
Test
Method
and
Condition
Requirements
(1) Open-Circuit
Voltage
The
open-circuit
voltage
shall
be
measured
within
24
hours
after
standard
charge.
≥4.0V
(2) Internal impedance
Internal
resistance
measured
at
AC
1KHz
after
50%
charge.
≤180mΩ
(3) Minimal Rated
Capacity
The
capacity
on
0.2C
discharge
till
the
voltage
tapered
to
2.75V
shall
be
measured
after
rested
for
30min
then
finish
standard
charge.
Discharge
Capacity
≥670mAh
3.6
Temperature
Dependence
of
discharge
capacity
Batteries
shall
be
charged
per
3.3.1
and
discharged
@
0.2Cto
2.75
V.
Except
to
be
discharged
at
temperatures
per
Table
3.
Batteries
shall
be
stored
for
3
hours
at
the
test
temperature
prior
to
discharging
and
then
shall
be
discharged
at
the
test
temperature.
The
capacity
of
a
cell
at
each
temperature
shall
be
compared
to
the
capacity
achieved
at
23
ºC
and
the
percentage
shall
be
calculated.
Each
battery
shall
meet
or
exceed
the
requirements
of
Table
3.
Table
3
Discharge
Temperature
-10
℃
0
℃
23
℃
60
℃
Discharge
Capacity
（
0.2C
）
40%
70%
100%
95%
