Narada Power Source Co., Ltd. REXC operation manual V1.2
8
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 REXC battery in sealed structure.
Chapter Two Technical characteristic
1. Discharge Curve and Discharge Data
Fig. 2-1 REXC Battery Discharge Performance Curves at Different Discharge Rates
（
25
℃
）
2.20
2.00
1
1.80
1.60
1.40
1.20
C
120
C
10
C
3
C
1
Hour
Minute
1C
2C
3C
Fig.2-1 Discharge characteristic curve
2. Charge Curve
Fig.2-2 Recharge characteristics of REXC battery with current of 0.1C
10
A and limit
voltage of 2.30V/cell (25
℃
). The 100% DOD battery can be recharged 105% of
capacity after charging for 24 hours. Imaginary line is the recharge curve of 50%DOD.
Discharge time (minutes)
V
olt
age
(V
)
