DLG DI-215 Operating Manual - Page 8
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The load test method: According to the physical formula R=V/1, test
equipment forcibly make the high permanent DC current ( presently 40-80A
large current is available ) go through the battery shortly ( about 2-3
seconds). And then the tested voltage of the battery can be used to figure out
the internal resistance by the formula.
(1) Just available for large capacitance battery or storage battery. The small
capacitance battery can not load 40-80A large current in 2-3 seconds.
(2) When the large current going through the battery, there comes out
polarization phenomenon from internal electrode, which can cause
polarization internal resistance. As a result it has to be tested in a short time.
Otherwise there is a large error of the internal resistance value.
(3) The internal electrode will be damage generally when large current go
through the battery.
The method of this tester:Battery is actually equivalent to an active
resistance. So we add a fixed frequency and small current to it, and then
sample the voltage value. Eventually the internal resistance can be figured
out after some operation such as rectificationand smoothing.
7. Specification Of Storage Battery
The data in the table is just for reference. Actual value must be referredto the
manufacturer.
7-1．JIS translation table
B at tery
CC A
N E W J IS
OL D JIS
MF
CM F
26 A1 7R
2 00
26 A1 7L
2 00
26 A1 9R
1 2N 24-4
20 0 22 0 2 64
12 N2 4-3
20 0 22 0 2 64
26 A1 9L
2 8A 19 R N T50-N 24 2 50
28 A1 9L N T 50-N 24 L 2 50
3 2A 19 R N X60-N24 2 70
29 5
Ba tt ery
CC A
N E W J IS
O L D J IS
M F
5 5 B 24 R S
N T 8 0-S 6S
4 3 0
42 0
5 5 B 24 L S
N T 80-S 6 L S
4 3 0
4 2 0
5 5D 2 6 R
N 5 0 Z
35 0
4 4 0
5 5D 2 6 L
N 5 0Z L
35 0
4 4 0
6 0D 2 3 R
5 20
6 0 D2 3 L
5 2 0
6 5 D2 3 R
42 0
54 0
13
batteries in series.( only DI-215A)
Internal insulation 4.75mΩ
The higher of the CCA value , the lower of the internal insulation
normally.
Remark: Different material of the battery produced by various
manufacturers can cause different internal insulation. So there is no fixed
standard. But there is little difference among the internal insulation of the
battery with the same model from the same manufacturer.
When selecting 24V test, internal resistance equals the sum of two
groups 12V batteries in series.(only DI-215A)
Life: Display the condition of the battery. Suggest replacing the battery
when it shows below 45%.
<45%
★ Suggest replacing
The result indicates the battery is bad and remains 32% of life. So suggest
replacing the battery.
C MF
★ Life check OK, and voltage check low
5 0 0
5 0 0
52 5
52 5
5 8 0
6