Tool It DBT 400 - Battery tester GYS - Free user manual and instructions

Product type	Battery tester
Brand	GYS
Model	Tool It DBT 400
Battery voltages tested	6 V and 12 V (battery), 12 V and 24 V (charging system)
Compatible battery types	Standard, Start-Stop, AGM, etc.
Supported battery standards	CCA, BCI, CA, MCA, DIN, IEC, EN, SAE, GB
Starting current range	Up to 2000 CCA
Power supply	6 batteries 1.5 V (AA type)
Display	LCD screen
Connection	Red (positive) and black (negative) clamps
Functions	Battery test, start test, alternator test, ripple test
Reverse polarity protection	Yes (fuse)
Safety	CE, EAC, UKCA, CMIM compliant; explosion and acid protection
Warranty	2 years parts and labor
Maintenance	Clean battery terminals, replace batteries
Replacement batteries	6 AA 1.5 V batteries
Storage condition	Dry and clean place
Included accessories	Cables with clamps, user manual

Frequently Asked Questions - Tool It DBT 400 GYS

How to connect the GYS Tool It DBT 400 battery tester?

Make sure the area is ventilated, the vehicle ignition is off, and all accessories are off. Clean the battery terminals if necessary. Connect the black clamp to the negative (-) terminal and the red clamp to the positive (+) terminal. If the clamps are reversed, the internal fuse will blow and may damage the device.

What to do if the screen does not turn on?

Check that the device is properly connected to the battery. If the battery voltage is too low, the tester will not turn on. Fully charge the battery and try again. If the problem persists, replace the 6 AA batteries inside the tester.

What battery voltages are supported by the Tool It DBT 400?

The tester supports 6 V and 12 V batteries for battery testing. For charging system testing, it works on 12 V and 24 V. Note: for Start-Stop batteries, the charging system test is only available in 12 V.

How to test a Start-Stop battery?

In the menu, select "1. START-STOP" using the arrows, then press ENTER. Then follow the steps to select the battery type, standard, and starting current. The tester will analyze the battery and display the result.

What do the battery test results mean?

Possible results: BATTERY OK (battery good), OK TO RECHARGE (good but low charge), CHARGE & RECHECK (recharge and test again), REPLACE (near end of life), DAMAGED BATTERY (defective cell). Use the arrows to see SOH (state of health) and SOC (state of charge).

How to test the alternator with this tester?

After testing the battery, press "SYSTEM TEST". Follow the instructions: start the engine, then turn off accessories to measure the starting voltage. Then, turn on accessories (heater, headlights) and rev the engine to 2500 rpm for 15 seconds. The tester analyzes voltage and ripple.

What to do in case of reverse polarity?

Reverse polarity causes the internal fuse to blow. This is not covered by warranty. Replace the fuse (if accessible) or contact customer service. Always check connections before connecting.

How to maintain the tester?

Clean the clamps and battery terminals regularly to prevent oxidation. Replace the 6 AA batteries when discharged. Store the device in a dry and clean place.

What is the warranty period of the Tool It DBT 400?

The warranty is 2 years parts and labor from the date of purchase, covering manufacturing defects. It does not cover normal wear, damage due to misuse or transport.

Is it compatible with 24 V batteries?

The tester can test the charging system on 24 V batteries (alternator), but the battery test itself is limited to 6 V and 12 V batteries. For 24 V batteries, use the charging system test function.

USER MANUAL Tool It DBT 400 GYS

DBT400 1. START STOP 2. BATTERY TEST 3. SYSTEM TEST 4. LANGUAGE Battery & Electrical system analyzer 6V 12V START & STOP ENTER TEST

FR 2-5	TESTEUR DE BATTERIE DBT 400
EN 6-9	BATTERY TESTER DBT 400
DE 10-13	BATTERIETESTER DBT 400
ES 14-17	PROBADOR DE BATERÍA DBT 400
RU 18-21	TECTEP БАТАРЕЙ DBT 400
NL 22-25	ACCU-TESTER DBT 400
IT 26-29	TESTER DI BATTERIA DBT 400

INSTRUCTIONS DE SÉCURITÉ

This manual includes guidelines on the operation of your device and the precautions to follow for your own safety. Ensure it is read carefully before first use and keep it handy for future reference.

Risk of explosion and fire!

A battery being charged can emit explosive gas.

The battery tester should only be connected to batteries with a rated output voltage of 6 V, 12 V and 24 V.

CAUTION: Reverse polarity will cause the fuse to blow and could cause permanent damage. Damage due to reverse polarity is not covered by our warranty.

CAUTION: If the car's battery is disconnected, some management systems may be disabled.

Consult your vehicle manual for more information on installation.

Do not use the battery tester if the cord or terminals are damaged.

Do not use the battery tester if it has received a severe shock or has been damaged in any way.

Do not disassemble the device. Incorrect reassembly may result in a risk of electric shock or fire.

Acid projection hazard!

• Wear appropriate safety glasses and clothing.
• If your eyes or skin come into contact with battery acid, rinse the affected part of the body with plenty of water and seek immediate medical assistance.

• Avoid flames and sparks. Do not smoke.
• Protect the electrical contacts of the battery against short-circuiting.

• The device complies with European Directive.
• The certificate of compliance is available on our website.

• EAC conformity mark (Eurasian Economic Commission)

- Material conforms to UK requirements. The UK Declaration of Conformity is available on our website (see cover page).

• Device compliant with Moroccan standards.

- The C_ (CMIM) declaration of conformity is available on our website.

- This product should be disposed of at an appropriate recycling facility. Do not dispose of in domestic waste.

- Recyclable product that falls within waste sorting recommendations

CONNECTING THE BATTERY TESTER

1- Ensure that the area is well ventilated before performing a test.
2- Tester for 6 and 12 V batteries and test of the 12/24 V battery charging system (only 12 V on the START & STOP batteries).
3- Before performing a test on the battery, make sure that the ignition and the consumers are switched off. Close all the doors and the boot.
4- Make sure that the battery connections are clean. If necessary, clean them using a wire brush.
⚠️ Any presence of oxidation between the tester terminals and the battery connectors or between the battery connectors and the battery terminals reduces the effectiveness of the tester.
5- Check that the tester has 6 x 1.5V batteries in the compartment.
6- Connect the negative plug (black) to the negative terminal of the battery. Connect the positive plug (red) to the positive terminal of the battery.

DEVICE SETTINGS

Set the language:

1. Press ▲▼ to select «language» then press «ENTER» to confirm selection
2. Select the language using the arrow ◀ then confirm the choice by clicking on «ENTER».

BATTERY TEST

1. Press ▲▼ to select the test «1. START-STOP «if it is a START & STOP battery or» 2. BATTERY TEST «if it is a standard battery. Confirm by pressing «ENTER».
2. Select the type of battery using the arrows ◀ then click on the down arrow to access the other criteria.
3. Choose the standard written on the battery and validate (possible standards: CCA, BCI, CA, MCA, DIN, IEC, EN, SAE, GB)

4. Enter the start current indicated on the battery (eg 830SAE) and confirm by pressing «ENTER».
   The test starts.

5. Battery test result

Result Screen display Analysis
BATTERY OK	BATTERY OK × × . × × V × × × × SAE SOH: × × × × SAE XX%	The battery is in working order.
OK FOR RECHARGE	OK TO RECHARGE × × . × × V × × × × SAE SOH: × × × × SAE XX%	Battery in good condition but low state of charge.
CHARGE & TEST	CHARGING & TESTING × × . × × V × × × × SAE SOH: × × × × SAE XX%	Charge the battery and perform the test again.
TO BE REPLACED	TO REMPLACEX × × . × × V × × × × SAE SOH: × × × × SAE XX%	The battery is nearing the end of its life. A replacement should be organised.
BATTERY DAMAGED, REPLACE	BAD CELL & REPLACE × × . × × V × × × × SAE SOH: × × × × SAE XX%	A problem at the cell level is observed (short circuit.....). Replace the battery.
ERROR CHARGE ERROR CHARGE		The battery exceeds 2000 CCA or 200 AH, or the clamps are not properly connected.If neither of these two elements listed above are the cause, fully recharge the battery and test again. If the display remains the same, replace the battery.

1. In each case, to display the battery health status (SOH) and charge status (SOC), press ▲▼ to scroll through the results.
2. Press «ENTER» to return to the home screen. Press «ENTER» again to access the main menu.

TEST OF THE ALTERNATOR CHARGING SYSTEM

1. Press «SYSTEM TEST» the following screen appears :

CUT CONS. START ENGINE

1. Make sure all vehicle consumers are switched off (lights, air conditioning, radio etc.).
2. Start the engine. One of these three results appears :

Examples Screen display Analysis
Voltage below 9.6 V	START VOLTSx.xxx V LOW	The starting voltage is not correct. The battery must be replaced.
Voltage above 9.6 V	START VOLTSx.xxx V NORMAL	The starting voltage is normal.
No undulation	START VOLTSNO UNDULATION	The starting voltage is not detected.Repeat the test.

1. If the start voltage is normal, press «ENTER» to continue the test.
2. Keep the engine running Check that all the accessories of the vehicle are off then validate.
3. One of the 3 results is displayed :

• Result of the start voltage test

Examples Results displayed Analysis
High starting voltage when the test is performed with the engine at idle	ALT. VOLTS ADJUST xx.xx V UP	Check that the connections are good. If everything is properly connected, replace the regulator.
Normal starting voltage when the test is performed with the engine at idle	ALT. VOLTS ADJUST xx.xx V NORMAL	No problem detected. Normal operation of the alternator.
Low starting voltage when the test is performed with the engine at idle	ALT. VOLTS ADJUST xx.xx V LOW	The alternator does not provide enough power to the battery. Check the belts, and ensure that the alternator is running when the engine is on. If the belts slip or are broken, replace them and re-test. Check the connection between the alternator and the battery. If the connection is bad, clean or replace the cable and re-test. If the alternator belts and connection are in good condition, replace the alternator.

1. Press «ENTER» to continue charging circuit test with accessories.

2. The tester asks «SWITCH CONSUMERS ON AND PRESS ENTER». Turn on the heater to maximum (heat), high and rear headlights. Do not switch on cyclic loads such as air conditioning or windshield wipers.

3. Run the engine at 2500 rpm for 15 seconds.

4. Press «ENTER», the ripple intensity of the load cell appears. One of the two results is displayed :

Results found Screen display		Analysis
Normal undulation intensity	VOLTAGE REDR OKxx.xx V NORMALORVOLTAGE REDR DEF	The diodes are working in the alternator/starter
High undulation intensity	TENSION REDR OKxx.xx V HIGH	One or more diodes do not do not work or are damaged. Make sure that the alternator support is properly positioned and that the timing belts are working properly. If so, replace the alternator.

1. Continue the test by pressing «ENTER». The tester now analyses the starting voltage with the accessories of the vehicle running.

• Result of the load system test with consumables running

Examples Results displayed Analysis
High starting voltage when the test is performed with the accessories running	VOLTAGE ALTERNA xx.xx V HIGH	The alternator output voltage is abnormally high. Check that there are no connection problems. If not, replace the alternator.
Normal starting voltage when the test is performed with the accessories running	VOLTAGE ALTERNA xx.xx V NORMAL	The alternator output voltage is normal. No problem detected.
Low starting voltage when the test is performed with the accessories running	VOLTAGE ALTERNA xx.xx V LOW	The alternator does not provide enough current for charging the electrical system and the battery. Check the belts, and ensure that the alternator is running when the engine is on. If the belts slip or are broken, replace them and re-test. Check the connection between the alternator and the battery. If the connection is bad, clean or replace the cable and re-test. If the belts and connection are in good condition, replace the alternator.

MAINTENANCE

Examples Analysis
Display switched off	Check that the device is connected to the battery. The battery voltage is not high enough to perform the test (<1.0 V). Fully recharge the battery and try again.
Insufficient internal battery Replace the batteries in the tester.

WARRANTY

The warranty covers faulty workmanship for 2 years from the date of purchase (parts and labour).

The warranty does not cover:

• Transit damage.
• Normal wear of parts (eg. : cables, clamps, etc..).
• Damages due to misuse (power supply error, dropping of equipment, disassembling).
• Environment related failures (pollution, rust, dust).

In case of failure, return the unit to your distributor together with:

• The proof of purchase (receipt etc ...)
• A description of the fault reported