Narada Power Source Co., Ltd. REXC operation manual V1.2
9
2.30
2.25
2.15
2.05
0
12
2
8
6
10
4
C
h
ar
g
e
c
ap
ac
it
y
(%
)
C
h
ar
g
e
c
ur
re
nt
(C
A
)
C
h
ar
g
e
v
o
lt
ag
e(
V
)
Charge voltage
Charge capacity
100% discharge
50% discharge
Charge current
Time ( h )
Fig.2-2 Charge characteristic curve
3. Internal Resistance and Short-Circuit Current
The internal resistance of the battery is a dynamic nonlinear parameter that is
continuously changed along with the temperature and discharge state. The internal
resistance is the lowest when battery is fully charged. The table 2-3 shows the internal
resistance and short circuit current of REXC battery in fully charged state according to
the IEC60896 standard. Pay attention to the battery to short-circuit causes the battery
voltage to reduce to 0V, and will cause the battery internal component damaged.
Table 2-3 Referenced Internal Resistance and Short Current
Battery Type
Internal Resistance
(mΩ)
Short Current (A)
REXC-200
0.55
3700
REXC-300
0.39
4752
REXC-400
0.30
6107
REXC-500
0.28
7211
REXC-600
0.23
8614
REXC-800
0.18
10873
REXC-1000
0.15
12835
REXC-1200
0.14
13874
REXC-1500
0.12
16882
REXC-2000
0.10
20660
