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Duoyi DY219 - User Manual

Duoyi DY219
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V4.1
BATTERY TESTER
OPERATING
MANUAL
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Summary

Brief Introduction

Safety Rules and Precautions

International Electric Symbols

Structure of Meter

Functional Instructions

Storage Battery Voltage Mode Setting

Set the tested voltage according to the battery type. Select 12V or 24V mode before proceeding to other tests.

Battery Capacity Test

Offers quick and accurate test methods. Accurate test uses CCA directly from the battery label for precise results.

Start-Up Load Test

Tests the vehicle's starting system by measuring battery voltage during engine crank. Compares to standard values for good/bad assessment.

Maximum Work Load Test

Tests the battery's performance under maximum load by simulating engine start and running conditions. Checks voltage under load.

Charging System Test

Evaluates the vehicle's charging system by measuring battery voltage while the engine is running at specified RPMs. Checks voltage regulator.

FAQ

Measurement Principle of Tester

Explains the tester uses AC conductivity test principle, measuring AC current signal to voltage ratio to assess battery health.

Effect of Negative Current Installation

Negative current installation affects results. Remove negative currency prior to checking for accurate data. Check connections.

Predicting Battery Life

Predicting exact battery life is impossible due to complex internal resistance. Sudden increase may indicate imminent failure.

Accuracy of CCA Test Value

Tested CCA values are generally 10-15% higher than standard for new batteries and approach standard as battery ages.

Tester Method vs. Load Test Method

This tester uses AC signal. Traditional load test uses high DC current for a short period to measure voltage drop.

Specification of Storage Battery

JIS Translation Table

Provides a reference table for JIS battery standards, including CCA, MF, and CMF values, for comparison with test results.

Knowledge About Automotive Battery

Internal Resistance Differences

Explains internal resistance varies due to chemical features, affecting discharge ability. Measured in milliohms.

Estimating Battery Capacity by Intuition

Capacity cannot be estimated by intuition. Hydrometer and specific gravity are used to check battery water and acid proportion.

Common Abbreviation Definitions

Defines common battery standards and abbreviations like RC (Reserve Capacity), CCA (Cold Cranking Ampere), CA, and AH (Ampere Hour).

Duoyi DY219 Specifications

General IconGeneral
DC Current200μA/2mA/20mA/200mA/10A
Resistance200Ω/2kΩ/20kΩ/200kΩ/2MΩ/20MΩ
Diode TestYes
Continuity BuzzerYes
Transistor TestYes
Power Supply9V Battery
Fuse ProtectionYes
DC Voltage200mV/2V/20V/200V
AC Voltage200V
DisplayLCD