Narada Power Source Co., Ltd. 12REXC operation manual V1.0
7
negative electrode:
Because of the reaction is based on double layer capacitance which caused from
carbon electrode/electrolyte interface, thereby the lead carbon battery has part
characteristic of super capacitors. Thus the lead carbon battery can possess large
current and long cycle life performances.
12REXC battery adopts a design of barren-liquor and utilizes AGM (micro porous
glass fiber) separator. Thus there is a path existing between the positive and the
negative. Also special alloy grid is chosen to increase vent hydrogen over-potential
gassing on the negative plate, which prevents generation of hydrogen. Otherwise, the
oxygen generated from positive diffuses through separator to the negative and the
oxygen gas reacts quickly and is recombined into water. The reactions are as follows:
：
2Pb +O
2
2PbO ;
PbO+ H
2
SO
4
PbSO
4
+H
2
O;
So it is possible to build 12REXC battery in sealed structure.
Chapter Two Technical characteristic
1. Discharge Curve and Discharge Data
Fig. 2-1 12REXC Battery Discharge Performance Curves at Different Discharge Rates
（
25
℃
）
Discharge curve at different rate
25
（ ℃）
1
C
120
C
10
C
3
C
1
D
is
ch
ar
ge
vo
lta
ge
V
（
）
Hours
Min
13.20
12.00
10.80
9.60
8.40
O(l)
2H
(s)
PbSO
arg
arg
2
(aq)
3H
(aq)
HSO
(s)
PbO
2
4
-
-
4
2
e
ch
e
disch
e
-
2
-
x
2)
-
(x
6
x
x
6
2e
(aq)
2H
(aq)
)
(H
nC
arg
arg
(aq)
)
(H
nC
-
-
e
ch
e
disch
