RITAR HR Series, Техническое руководство

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8
Battery Charge, Discharge & Life
1. Charge Characteristics
2. Charge Curve of Float Use
3. Relationship between Float Charge Voltage and Environment Temperature
At general temperature (5 ~30 ), float charge voltage is 13.6V~13.8V. The batteries for float charge service
adopt the constant voltage but limited current method. The initial current is 0.1C A and the maximum current
10
is 0.2C A.
10
1) At 25 , the float charge voltage of 12V battery is 2.27V per cell.
2) When the ambient temperature changes, the float charge voltage should be adjusted. The
temperature compensation coefficient is -3Mv/
, i.e., U float= 2.27 – 0.003(t-25) * n.
0.04
0.08
0.1 2
0.1 6
0.2 0
0.2 4
0.2 8
Charge Characteristic Curve of Float Use
C
h
a
rg
e Vo
lu
m
e (
%
)
C
h
a
rg
e C
u
rr
e
n
t (
A
)
C
h
a
rg
e Vo
lt
a
g
e (
V
)
Charge Time (Hr)
Charge Voltage
Charge Volume
Discharge
Charge with Constant Voltage
& Limited Current :
Charge Voltage: 2.30V/Cell
Charge Current: 0.2C A
1 0
Temperature: 25℃/77℉
5
(
lead sulfate sponge lead)
(
lead sulfate dioxide alumina)
water sulfuric acid, proportion rise
）
sulfuric acid water, proportion decrease
）
(
sponge lead lead sulfate)
(
dioxide alumina lead sulfate)
Charge condition is one of the most important factors in battery use. The battery performance and service life
are directly related to its charging methods and charging parameters in using. The battery is recommended to
be charged at the temperature range of 5-30 ℃ . At any temperature lower than 5 ℃ or higher than 35 ℃ it will
cause undercharge or overheating and then decrease the battery life.