Duoyi DY219 User manual

V4.1
BATTERY TESTER
OPERATING
MANUAL

1. Brief Introduction
2.Safety Rules and Precautions
3.International Electric Symbol
4.Structure of Meter
5.Functional Instructions
5-1 storage battery voltage mode setting
5-2 battery capacity test
5-3 start-up load test
5-4 maximum load system test
5-5 charging system test
6.FAQ
6-1 What is the measurement principle of this tester ?
6-2 Is the result affected by the installation for negative current inside the
vehicle?
6-3 Can this tester predict when the battery goes down?
6-4 Is the CCA value tested by this tester correct?
6-5 What is the difference between the method of this tester and the load
test method?
7.Specification Of Storage Battery
7-1 JIS translation table
7-2 comparison table of DIN/EN
8.Knowledge About Automotive Battery
8-1 the internal resistance of different types of battery differ
8-2 it is unavailable to know the battery's capacity by intuition
8-3 some common abbreviation definition of storage battery standard
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Content

1
1. Brief Introduction
This battery tester is used for lead-acid starting battery, along with
checking the following conditions of the battery, starting up, charging, and
loading. With great design, easy operation, precise reading, complete
functions, this tester supply the readings by a large LCD and hints by sound
and light when testing. It utilizes 4-wire Kelvin method to complete collection
of a series of complicated data for calculating every testing data with build-in
precise circuit and improved digital processor. Moreover some circuit
improvements including polar reversal protection, over voltage input
protection, loose lead detection, ensure safety and convenience during
testing.
So this is the best tool in the fields of battery sales, vehicle repair and
battery inspection in equipment system associated with lead-acid starting
battery.
2. Safety Rules and Precautions
This manual includes instruction, operation warning and maintenance.
Damage to the meter may occur if failure to operate it complied with
regulations in this manual. This tester is designed and produced strictly
according to IEC/EN61010-1 safety standard. It also reaches double
insulation over voltage standard CATⅢ 600V and pollution degree 2 .
(1) The working voltage of 12V system battery tester is DC 9V to 18V,while
that of 12/24V system refers to DC 9V to 35V. Make sure DO NOT check the
series connection battery.
(2) The voltage value will be higher than that in the normal situation after the
checked battery being fully charged . Please turn on the headlights for 2 to 3
minutes, then check the battery when it’s voltage value drop to the normal
value.
20
★ DIN－Deutsches Institut für Normung e.V.
Under a cold temperature of 0°F（-18°C）, the Ampere quantity is 9.0V
30 seconds with the lowest voltage, while 8.0V 150seconds.
★ IEC－ International Electrotechnical Commission
Under an average current, every battery cooled in the situation of 0°F （-
18°C）can load the lowest voltage of 8.4Vfor 60 seconds.
★ BSR－Battery Saving Ratio
Under an average current, every battery cooled in the situation of 0°F
（-18°C） can load the lowest voltage of 6.0Vfor 180 seconds.
★ BCI－Battery Commission of International
Under an average current, every battery cooled in the situation of 0°F
（-18°C）~ -20°F（-29℃）can load the lowest voltage of 7.2V for 30
seconds.

(4) Check the insulating layer of the clamps before measuring. Damage,
bareness and disconnection are unacceptable. It is forbidden to use without
covering the rear cover correctly, which can cause electric shock.
(5) Do not use or store the tester in the condition of high temperature, high
humidity, combustibility, explosion and strong electromagnetic field.
(6) Do not change the internal circuit at will in order to avoid damaging the
tester and keep safe.
(7) Wear proper eye mask when testing or repairing in order to avoid some
objects hitting eyes by the engine.
(8) Make sure ventilation when testing or repairing in order to avoid smelling
some toxic gas.
(9) When the engine is working, do not put the tester or accessories beside
the engine or exhaust pipe in order to avoid damaged by high temperature.
(10) Pay attention to the precautions and maintenance procedure of the
manufacturer during repairing.
(11)Standard of optional storage battery:
Accurate Test Quick Test
CCA: 100-1700 3Ah-250Ah
I E C: 100-1000
E N : 100-1700
D I N: 100-1000
J I S: need to compare CCA with the table
3.International Electric Symbol
219
DC
AC
DC/AC
warning
high voltage(electric shock)
earth
double insulation
fuse
battery
water), on the contrary shorten its life fast for the reason that it will increase
the acidity of battery water, not the voltage however.
8-3 some common abbreviation definition of storage
battery standard
★ RC－Reserve Capacity
Every storage battery has the ability to load averagely 25A electric
perminute and maintains lowest 10.5V more or less in the situation of
80°F(27°C).
★ CCA－Cold Cranking Ampere
With the fixed current, every battery can be cooled in the situation of
0°F（-18°C）~ -20°F（-29°C）for 30 seconds and maintain the lowest
voltage of 7.2V. The unit of CCA is Ampere. For some vehicles, especially
long time used ones, it is hard to start the engine smoothly, and has to be
done twice or for some seconds. Actually the electricity consumes most
when starting the engine. The voltage drops off from the normal value 12.5V
to 10.5V even lower at the moment that large current discharge shortly. The
large CCA is very helpful to start the engine smoothly.
★ CA－Cranking Ampere
The main meaning is very close to that of CCA. The unit is Ampere also.
The temperature under testing is the only one difference between them. CCA
refers to the result that measured under -17.8°C, and CA refers to the result
that measured under 0°C. If there indicates both CCA and CA on the battery,
CCA value is lower for the reason that the lower temperature is, the worse
battery works.
★ AH－Ampere Hour
This is a standard written by Japanese Industrial Standard (JIS). It is
explained that the battery discharges with a fixed ampere for 20 hours along
with over 10.5V. Therefore the value multiplied by a fixed ampere and the
number of hour is Ampere Hour. For example a battery discharges with 5
ampere fixed for 20 hours, its Ampere Hour is 100.

3
4. Structure of Meter
Introduction of button and clamp
<▲><▼>:increase, decrease,
turn up/down the page
<ESC>:cancel, undo, return
<ENTER>:select, enter, test
the red clamp: positive connection
the black clamp: negative connection
5. Functional Instructions
5-1 storage battery voltage mode setting
Before testing, set the tested voltage according to the type of battery
voltage. Select 12V mode for a 12V battery. Select 24V mode for a 24V
battery. And then head to the following testing :battery capacity test, start-up
load test, maximum load system test, charging system test.
5-2 battery capacity test
Two test methods are available--quick test and accurate test.
Quick test is the method that utilizes roughly calculated CCA transmitted
from capacity value (Ah) listed on the battery label in case of no CCA visible.
Accurate test is the method directly utilizes CCA listed on the battery
label.
PLEASE NOTE : Accurate test is recommended for testing as long as
CCA is available and visible from the battery because CCA value differs even
though the batteries with the same capacity of the same brand.
18
LCD
button
testclamp
8. Knowledge About Automotive Battery
8-1 the internal resistance of different types of battery
differ
The internal resistance differs because of inconformity of internal
chemical feature even if with the same type battery. It is very small so that we
generally define it with unit of milliohm. Internal resistance is a significant
technical standard to measure a battery. Normally the battery with small
internal resistance has a great ability to discharge. On the contrary the
battery with large internal resistance has a little ability to discharge.
8-2 it is unavailable to know the battery's capacity by
intuition
Hydrometer can be used to check the condition of the battery. Battery
water is distilled water and pure sulfuric acid of the proportion of 1.260/20 ℃
to allocate. For a new battery, it is supposed to supply distilled water with
reduction of battery water for the reason that the degree of acid is fixed when
the quantity of battery water remain the normal range. Distilled water
supplement can maintain a certain amount of water, but also the PH value. If
the battery works normally, in addition to the PH is fixed, the proportion of the
value will be in a certain range.
If the battery finishes charging, the proportion of battery water does not
reach 1.26-1.28, along with the tested voltage under 12.7V, the storage
capacity of this battery has descended. It is impossible to recover its life by
deliberately adjusting the proportion to 1.26 (Increase the sulfuric acid
Battery of small type vehicle
Voltage(V)
Electric(%)
Proportion
>12.7
100% 1.26~1.28
12.6
90% 1.2 4
12.4
70~80% 1.22
12.1 50% 1.16
<12 25%<1.13

4
5-2-1 preparation
If the engine is working, please turn off first and switch the key to off
location.
The voltage value will be higher than that in the normal situation due to
the checked battery is fully charged after the vehicle runs for a while. Please
turn on the headlights for 2 to 3 minutes, then check the battery when it’s
voltage value drop to the normal value.
5-2-2 operation procedure
A. Quick test
(1) Connect the red clamp to the positive terminal, with the black to the
negative. Make sure all connections are well contacted to ensure the
accurate test.
(2) Press <▲><▼>button to select test function, and then press <ENTER>
further. See the picture:
(3) Press<▲><▼>button to type of the battery. Press <ENTER> further. See
the picture:
(4) According to the label of the battery, press <▲> <▼> button to select quick
test or accurate test. The below picture shows the selection of quick test,
press <▲> <▼> further. See the picture:
17
Model The same model DIN EN Model The same model D I N EN
54 5 23 54 5 24 22 0 3 00 58 5 21 58 5 13 32 0 54 0
54 5 37 54 5 45 5 4 80 1 19 0 30 0 58 52 2 5 8 51 4 32 0 54 0
54 5 51 5 4 58 0 220 30 0 58 8 15 58821 39 5 6 40
54 5 33 5 4 57 7 54 5 79 22 0
30 0
58 8 20
54 5 84 5 4 57 8 220 30 0 58 8 27 40 0 6 40
54 5 90 210
33 0 58 8 38 5 8 83 3
88 0 92 40 0 6 80
54 8 27 240
36 0 59 0 40 5 9 01 7
59 0 18 36 0 6 00
55 0 40 8 8 05 6
265 45 0 59 2 18 59219
29 0 4 80
55 0 41 5 5 04 2 220 36 0 59 2 26 59215 45 0 7 60
55 0 44 5 5 41 4 88 0 56 265 45 0 59 5 14 32 0 5 40
55 0 46 30 0 5 10 59 5 18 59 5 19 39 5 64 0
55 0 56 32 0 5 40 59 6 15 59 6 16 36 0 60 0
58 5 15 5 8 52 7 3 9 5 64 0
550 5 7 54 8 27 88 1 56 32 0 540 60 0 18 60019 25 0 4 10
55 0 68 5 5 06 9 55 5 48 22 0 390 60 0 26 58811 44 0 7 20
55 2 18 25 5 420 60 0 44 60038 50 0 7 60
55 4 14 5 5 41 5 55 4 21 26 5 450 60 5 27 60528 41 0 6 80
55 4 22 5 5 56 6 55 0 40 26 5 450 61 0 17 61018 40 0 6 80
55 4 28 5 5 42 3 55 4 27 30 0 510 61 0 23 625 2 9 45 0 7 60
55 4 57 26 5 450 61 0 47 61048 45 0 7 60
55 5 29 22 0 36 0 62 03 4 62 0 38 6 2 04 5 42 0 68 0
55 5 31 55 5 45 5 5 55 9 L 25 5 42 0 63 01 3 47 0 68 0
55 5 59 5 55 3 0 88 0 56 2 55 420 635 45 63 5 49 42 0 68 0
55 5 64 5 55 5 2 55 5 63 25 5 42 0 6 402 0 64 3 17 6 4 31 8 32 5 55 0
55 5 64 5 55 6 5 55 5 48 25 5 42 0 6 40 2 8 6 40 3 5 52 0 76 0
55 5 70 55 5 67 5 5 56 5 L 25 5 42 0 64 03 6 46 0 76 0
56 0 12 23 0 39 0 64 31 7 6 43 1 8 64 3 23 540 900
56 0 48 56 0 68 5 6 06 9 250 390 65 513 540 900
56 0 49 5 6 06 9 56073 250 390 65514 65 5 15 570 900
56 0 77 5 6 03 0 300 510 67043 67 0 45 600 1000
56 0 91 5 5 81 1 360 540 68032 68 0 34 600 1000
56 1 11 5 5 04 8 300 540 70029 70038 70027 630 1050
56 2 18 5 6 09 2
300 510 70036 68040
68021 570 950
56 2 19 5 6 21 6
300 510 71014 71 0 15
700 1150
56220 280
510 72512 680 1150
56 2 25 56 3 23 30 0 5 10 73 0 11 7 40 1 20 0
56318 56312 56311 300 510
continue table

5
(5) According to the capacity values shown on battery, press <▲> <▼> button
to adjust the battery capacity.
(6) After adjusting the reference value of the battery, press <ENTER> to start
the test.
(7) When the test is completed, the test results will be displayed in the LCD.
(8) Press <ESC> to return step (2) to select other test functions.
B. Accurate test
(1) Connect the red clamp to the positive terminal, with the black to the
negative. Make sure all connections are well contacted to ensure the
accurate test.
(2) Press <▲><▼>button to select test function, and then press <ENTER>
further. See the picture:
(3) Press<▲><▼>button to type of the battery. Press <ENTER> further. See
the picture:
(4) According to the label of the battery, press <▲> <▼> button to select quick
test or accurate test. The below picture is the selection of
16
7-2．comparison table of DIN/EN
34B 1 9RS NS4 0 ZAS 27 0 3 2 5 40 0 80D 2 6 R NX1 1 0-5 5 80 580 63 0
34B19LS NS40ZALS 270 325 400 80D26L NX110-5L 580 5 8 0 6 30
46B 2 6LS 36 0 145G51L N15 0 L 780 9 0 0 110 0
48D 2 6R N50 2 8 0 360 420 150F51R NT2 0 0-1 2 640
48D 2 6L N 50L 28 0 360 420 150F51L NT2 0 0-12 L 640
50D 2 0R 310 380 480 165G51R NS2 0 0 935 9 8 0
50D 2 0L 310
380 480 165G51L N S 200 L
935 9 8 0
50D 2 3R 85B R 60K 50 0 170 F 51R NX2 5 0-12 10 4 5
50D 2 3L 8 5 B60K 5 0 0 17 0 F51L NX 2 50-12L 1045
50B 2 4R NT8 0-S 6 390 180G51R NT2 5 0-15 109 0
50B 2 4L NT8 0-S 6L 39 0 180 G 5 1L NT250-15 L 109 0
50D 2 6R 50D 2 0R 370 195G51R NX3 0 0-5 1 114 5
50D 2 6L 50D 2 0L 370 195 G 51L N X 300-51L 1145
55D 2 3R 355 4 8 0 50 0 1 90H 5 2 R N20 0 925 110 0 130 0
55D 2 3L 355 4 8 0 50 0 1 90H 5 2 L N20 0 L 925 1 1 0 0 13 0 0
55B 2 4R NX1 0 0-S 6 435 4 2 0 50 0 2 45H 5 2 R NX4 0 0-20 153 0 1 250
55B 2 4L NX1 0 0-S6 L 4 35 420 5 00 24 5 H52 L N X40 0-2 0L 1 5 3 0 125 0
Battery CCA Battery
NEW J I S OL D J IS MF CM F NEW J I S OLD J I S MF C M F
CCA
continue table
Mod e l T he same model DIN E N Model The same model DI N E N
52 8 05 52 8 15 18 0 24 0 5 6 42 0 56 322 8 806 6 30 0 51 0
53 5 17 17 5 30 0 56 53 0 56 6 18 5 6 63 8 3 00 5 10
53 5 20 53 52 1 5 35 2 2 1 50 2 40 566 18 566 19 5 6 62 0 3 0 0 51 0
53 6 25 536 38 53 836 17 5 3 0 0 5 66 3 3 5 6 64 7 56 6 41 30 0 51 0
53 6 46 5 36 2 1 88 0 38 17 5 30 0 5 6 82 0 56 821 5 6 82 8 3 15 5 40
53 6 53 5 3 62 4 53 8 90 17 5 30 0 57024 57 0 29 31 5 5 40
54 0 38 5 4 03 9 17 5 30 0 57113 57 5 39 40 0 6 80
54 2 32 17 5 30 0 57114 56 8 21 88 0 74 40 0 6 80
54 3 13 5 4 32 4 54 4 64 22 0 33 0 57218 57 2 19 42 0 7 20
54 3 17 5 4 31 2 88 1 46 21 0 36 0 57220 57 2 17 42 0 7 20
54 4 37 5 4 46 6 54 4 59 L 21 0 36 0 57230 38 0 6 40
54 4 59 5 4 43 4 88 0 46 21 0 36 0 57412 57 4 13 57 4 12 L 40 0 6 80
54 4 69 5 4 44 9 54 4 65 21 0 36 0 57512 57513 57 5 31 35 0 5 70
54 5 19 5 4 53 3 54 6 12 21 0 36 0 58515 58 4 24 45 0 7 60

6
accurate test, press <▲> <▼> further. See the picture:
(5) Press<▲><▼>button to select test standard according to the standard of
storage battery. If it is JIS standard, need to check CCA with the comparison
table. Then select CCA(SAE) as the test standard to press <ENTER> further.
See the picture:
(6) According to the label on battery, press <▲> <▼> button to adjust the
rated value. See the picture:
(7) Press <ENTER> to start the test.
(8) When the test is completed, the test results will be displayed in the LCD.
(9) Press <ESC> to return step (2) to select other test functions.
5-2-3 instruction of test result
Normal
VRLA/GEL/AGM/SLA STANDARD LSI
Voltage of the battery: 12.85V
Fully charged 100% 12.78V Fully charged 100% 12.60V
15
Battery CCA Battery
NEW J I S OL D J IS MF C M F NEW JIS O L D JIS MF C M F
32C24L N40L
240 325 400 75D26L F100-5L
490
34B 1 7R
280 75D31R N70Z
450 540 735
34B 1 7L
280 75D31L N70ZL
450 540 735
34B19R NS40ZA
270 325 400 80D23R 580
34B19L NS40ZAL 270 325 400 80D26L 580
36B20R NS40Z 275 300 360 85B60K 500
36B20L NS40ZL 275 300 360 85BR60K 500
36B20RS NS40ZS 275 300 360 95D31R NX120-7 620 660 850
36B 2 0LS NS 4 0ZL S 275 300 360 95D31L NX120-7L 620 660 850
38B 2 0R NX6 0-N24 330 340 410 95E41R N100 515 640 770
38B20RS NT60-N 24S 330 340 410 95E41L N100L 515 640 770
38B 2 0L NX6 0-24L 330 340 410 105E41R N100Z 580 720 880
38B 2 0LS NX 6 0-24LS 330 340 410 105E41L N100ZL 580 720 880
40B 2 0L 330 105F51R N100Z 580
40B 2 0R 330 105F51L N100ZL 580
42B 2 0R 330 115E41R NS120 650 800 960
42B 2 0L 330 115E41L NS120L 650 800 960
42B 2 0RS 330 1 15F 5 1 R N12 0 650 8 0 0 9 60
42B 2 0LS 330 1 15F 5 1 L N12 0 L 650 8 0 0 9 60
46B24R NS60 325 360 420 130E41R NX200-10 80 0
46B 2 4L NS 6 0L 325 3 6 0 42 0 1 30E 4 1 L NX2 0 0 -10 L 800
46B 2 4RS N S 60S 32 5 3 6 0 42 0 130F 5 1R 800
46B 2 4LS NS6 0 LS 32 5 3 60 4 2 0 130 F 5 1L 800
46B 2 6R 360 1 45F 5 1 R NS1 5 0 780 9 2 0
46B 2 6L 360 1 45F 5 1 L NS1 5 0L 7 80 92 0
46B 2 6RS 360 1 45G 5 1 R N15 0 780 9 0 0 110 0
CCA
32C 2 4R N 4 0 24 0 325 4 00 7 5 D 26R F10 0-5 4 9 0
32A 1 9L NX6 0-N2 4L 27 0 65D 2 3L 420 5 4 0 5 80
26B 1 7R 2 0 0 65D 2 6R N S70 4 15 52 0 6 2 5
26B 1 7L 2 0 0 65D 2 6L NS7 0 L 415 5 2 0 6 25
28B 1 7R 2 4 5 65D 3 1R N70 390 5 2 0 6 30
28B 1 7L 2 4 5 65D 3 1L N 70L 3 90 52 0 6 3 0
28B19R NS40S 245 70D 2 3R 35-60 490 540 5 8 0
28B 1 9L NS4 0 LS 245 70D 2 3L 25-60 490 540 5 8 0
32B 2 0R NS4 0 270 75D 2 3R 500 520 5 8 0
32B20L NS40L 270 75D 2 3L 500 520 5 8 0
295
continue table

7
14
75% 12.54V 75% 12.42V
50% 12.30V 50% 12.24V
25% 12.12V 25% 12.06V
Totally discharged 11.94V Totally discharged 11.88V
CCA value 588CCA
Determine The Condition of Battery.
For 12/24V system in use of 24V test mode, CCA value refers to 1/2
value of the one set of two 12V series connection batteries.
Internal resistance 4.75mΩ
The higher of the CCA value , the lower of the internal resistance
normally.
Note: Different material of the battery produced by various
manufacturers can cause different internal resistance. So there is no fixed
standard. But there is little difference among the internal resistance of the
battery with the same model from the same manufacturer.
For 12/24V system in use of 24V test mode, internal resistance value
refers to total value of the one set of two 12V series connection batteries.
Life: Display the condition of the battery. Suggest replacing the battery
when it shows below 45%.
◆ Suggest replacing
The result indicates the battery is bad
and remains 32% of life. So suggest replacing
the battery.
◆ Life check OK, and voltage check low
The result indicates the battery is
good and full of 100% of life. But only 12.11V
<45%
the internal resistance by the formula.
Disadvantages of this method:
(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.
Advantages of this method:
(1) It can be used for checking almost all the batteries including low capacity
battery and internal resistance of the notebook battery exclusively.
(2) It will not harm the battery to use this method.
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
Battery CCA Battery
NEW J I S OLD J I S M F C MF NEW J I S OLD JIS MF CM F
26A 1 7R 2 0 0 55B 2 4RS N T 8 0-S6S 430 420 500
26A 1 7L 2 0 0 55B 2 4LS N T 8 0-S6L S 4 3 0 420 5 0 0
26A 1 9R 12N 2 4-4 20 0 2 2 0 26 4 55D 2 6 R N 50Z 350 4 4 0 5 25
26A 1 9L 12N 2 4-3 200 2 2 0 264 5 5D2 6 L N 50ZL 3 50 44 0 5 2 5
28A 1 9R NT5 0-N 24 25 0 60D2 3 R 520
28A 1 9L NT5 0-N 24L 2 5 0 60D 2 3L 520
32A 1 9R NX6 0-N24 270 65D 2 3R 420 540 5 8 0
CCA
295

8
left. SO suggest charging. See the picture in right.
◆ Life check OK, and voltage check over low
The result indicates the battery life is only 11.88V left and over low
voltage, which can affect the result. At this time it is better to charge prior to
checking again.
5-3 start-up load test
5-3-1preparation
If the engine is working, please turn off first and switch the key to off
location.
5-3-2 procedure of operation
(1) Connect the red clamp to the positive terminal, with the black to the
negative. Make sure all connections are well contacted to ensure the
accurate test.
(2) Press <▲><▼>to select start-up load test as the picture below:
(3) After selecting the test item, press <ENTER> to display the result as the
picture below:
As can be seen in the picture current test voltage is 12.36V, standard
voltage is 9.6V, (for 24V system, standard voltage is 16V), the
13
6-2 Is the result affected by the installation of negative
current for the vehicle?
All the negative currency will affect the result. Therefor please remove
the negative currency prior to checking, in order to achieve the accurate
data.
6-3 Can this tester predict when the battery goes down?
The internal resistance of the sealed lead-acid battery is complicated. It
is generated by ohm internal resistance, concentration polarization internal
resistance, chemical reactions internal resistance and interference effect
caused by double capacitance’s charging. The ingredient of internal
resistance and its relative content will change with different test method and
different test moment, which can lead to different tested value of the internal
resistance. And there is no strict relationship between internal resistance (or
conductance) and capacitance of the sealed lead-acid battery. So it is
impossible to predict the life of battery according to a single battery’s internal
resistance. But it can be predicted the life of the battery will be over soon
from the sudden increase of its internal resistance and decrease of its
conductance.
6-4 Is the CCA value tested by this tester correct?
CCA is considered as a control standard with the produce of the battery.
According to the accumulated records, the tested value of new battery is 10-
15% higher than the standard value, and along with consuming of the battery,
the value is getting close to standard, even lower afterward.
6-5 What is the difference between the method of this
tester and the load test method?
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

9
lowest voltage is 12.30V.
(4) Start up the engine to make the tester automatically record the lowest
voltage in this process. Normally the voltage of battery will be higher than
9.6V in this process. (for 24V system, the voltage should be higher than 16V
when starting up the engine).
(5) Press <ESC> to return step (2).
5-3-3 start-up load test instruction
★ the lowest voltage higher than 9.6V(for 24V system, the reading is over
16V) means the start-up load system is good.
★ the lowest voltage lower than 9.6V (for 24V system, the reading is below
16V) means the system need to check.
Please check the relative connections, wire and engine. Also the
terminals of the battery should be checked if rusted.
5-4 Maximum work load test
5-4-1 preparation
◆ Please start up the engine firstly.
5-4-2 procedure of operation
(1) When the engine is working, connect the red clamp to the positive
terminal , with the black to the negative. Make sure all connections are well
contacted to ensure the accurate test.
(2) Press <▲><▼>to select maximum work load test as the picture below:
12
Status
Headlights and air-
condition off (need to step
the gas pedal when
checking)
Voltage
>13.5
13.2~13.5
13.0~13.2
<13
Data Reference Table
Condition
normal
general
pay attention
check immediately
(12V system)
Headlights and
air-condition on (need to
step the gas pedal when
checking)
The result can be affected by the defective battery.
13.4~14.6
13.2~13.4
<13.2
normal
pay attention
check immediately
6. FAQ
6-1 What is the measurement principle of this tester?
The battery will gradually aging with increase of time. The main reason
is that it can no longer generate some effectively chemical reaction because
of aging of the surface of the battery plate. That is why most of the batteries
can longer be used mainly. International Electric and Electronic Engineer
Association(IEEE)formally looks the Conductivity Test as one of the
standard of checking lead acid storage battery. It points out from IEEE
standard 1118-1996 that :Conductivity Test is used to test AC current
generated by putting the known frequency and amplitude AC signal to both
sides of the battery. AC conductivity value is the ratio of AC current signal
which keeps same phase with AC voltage and the AC voltage. This tester is
designed from this principle actually.
Start-up Voltage

11
10
(3)After selecting to get access to the below screen
(4)After operating as step (3) , press <ENTER> to display the maximum work
load test screen as the picture below: As can be seen in the picture current
test voltage is 12.86V, standard voltage is 12.80V (for 24V system, standard
voltage is 25.60V), the lowest voltage is 12.30V.
(5)Read the lowest value. If it is high than 12.80V (for 24V system, the
voltage is over 25.60V), the system runs normally.
(6)Press <ESC> to return step (2).
5-4-3 There are some problems in the system
★ If the value is lower than 12.80V (for 24V system, the voltage is under
25.60V), please check the engine belt if damaged and the wires if exist short
circuit.
5-5 Charging system test
5-5-1 Preparation
Please start up the engine firstly.
5-5-2 Procedure of operation
(1) When the engine is working, connect the red clamp to the positive
terminal , with the black to the negative. Make sure all connections are well
contacted to ensure the accurate test.
(2)Press <▲><▼>to select charging system test as the picture below:
(3)After selecting to get access to the below screen
(4)After operating as step (3) , press <ENTER> to display the charging
system test screen as the picture below:
The current test voltage is 13.88V, standard maximum voltage is 15.00V
(for 24V system, standard maximum voltage is 30.00V), tested maximum
voltage is 14.10V.
The other one indicates the current test voltage is 13.88V, standard
minimum voltage is 13.30V (for 24V system, standard minimum voltage is
26.60V), tested minimum voltage is 13.58V.
(5)Press <ESC> to return step (2).
5-5-3 There are some problems in the system
★ If the voltage is higher than 15.00V (for 24V system, the reading is over
30.00V), please check the voltage regulator.
★ If the voltage is lower than 13.30V (for 24V system, the reading is under
26.60V), please check the connections, wires and theengine.