Duoyi DY219 Руководство по эксплуатации - Страница 10

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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

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