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INSTRUCTIONS FOR

DIGITAL BATTERY TESTER 12V

MODEL NO: 

BT103

Thank you for purchasing a Sealey product. Manufactured to a high standard, this product will, if used according to these 

instructions, and properly maintained, give you years of trouble free performance.

IMPORTANT:

 PLEASE READ THESE INSTRUCTIONS CAREFULLY. NOTE THE SAFE OPERATIONAL REQUIREMENTS, WARNINGS & CAUTIONS. USE 

THE PRODUCT CORRECTLY AND WITH CARE FOR THE PURPOSE FOR WHICH IT IS INTENDED. FAILURE TO DO SO MAY CAUSE DAMAGE AND/OR 
PERSONAL INJURY AND WILL INVALIDATE THE WARRANTY. KEEP THESE INSTRUCTIONS SAFE FOR FUTURE USE.

1. SAFETY

DANGER! BE AWARE, LEAD-ACID BATTERIES GENERATE EXPLOSIVE GASES DURING NORMAL BATTERY OPERATION. FOR 

THIS REASON, IT IS VERY IMPORTANT TO READ AND FOLLOW THESE INSTRUCTIONS CAREFULLY, EACH TIME YOU USE THE 

BATTERY TESTER. 

Follow these instructions and those published by the battery and vehicle manufacturers, and the maker of any equipment you intend to use in 

the vicinity of the battery. Remember to review warning marks on all products and on engines.

1.1. 

PERSONAL PRECAUTIONS

 

V

IMPORTANT

! Observe all Warning Symbols.

 

R

WARNING!

 Wear approved eye protection. Wear appropriate Personal Protective Equipment. A full range of Personal Protective 

Equipment is available from your Sealey dealer.

Remove personal metallic items such as rings, bracelets, necklaces and watches. A lead-acid battery can produce a short-circuit   

current high enough to melt or weld a ring, which would cause severe burns.

Ensure that hands and clothing are clear of fan blades and other moving or hot engine parts. Remove ties and ensure that belts    

cannot become entangled.

Ensure that there is another person within hearing distance and is able to come to your aid should a problem arise when working   

near a lead-acid battery. 

Have fresh water nearby in case battery acid contacts skin or clothing; flush affected area immediately. If acid enters eyes, flush    

immediately with clean running water for a minimum of 15 minutes, seek medical attention.

DO NOT

 smoke or allow a spark or flame in the vicinity of the battery or engine.

1.2. 

GENERAL SAFETY INSTRUCTIONS

Familiarise yourself with the application, limitations and potential hazards of the tester. Also refer to the vehicle manufacturer’s hand  

book. IF IN ANY DOUBT CONSULT A QUALIFIED ELECTRICIAN.

Ensure that the tester is in good condition before use. If in any doubt do not use the unit and contact a qualified electrician.

Only use recommended attachments and parts. To use unapproved items may be dangerous and will invalidate your warranty.

Keep tools and other items away from the engine and ensure that you can see the battery and working parts of engine clearly. 

Determine the system voltage before using the tester.

If the tester receives a sharp knock or blow the unit must be checked by a qualified service agent before using.

Clean battery terminals before using the tester.

Keep children and unauthorised persons away from the work area.

DO NOT

 disassemble the tester for any reason. The tester must only be checked by qualified service personnel.

 

R

WARNING!

 To prevent the risk of sparking, short circuit and possible explosion 

DO NOT

 drop metal tools in the battery area, or allow 

them to touch the battery terminals.

DO NOT

 cross-connect tester to battery. Ensure positive (RED) clamp is to positive terminal and negative (black) clamp is to  

negative terminal. If battery symbols cannot be distinguished, remember that the negative terminal is the one directly connected to  

the vehicle bodywork.

DO NOT

 use the tester outdoors, or in damp, or wet locations and 

DO NOT

 use in the vicinity of flammable liquids or gases.

Ensure there is effective ventilation to prevent a build-up of explosive gases.

DO NOT

 use the tester for a task for which it is not designed.

When not in use, store the tester carefully in a safe, dry, childproof location.

2. INTRODUCTION

Compact, fast and accurate assessment of battery condition, even with the battery partially discharged. No heat, no sparks and no 

misdiagnosis. Just key in the battery rating from the top of the battery and the tester displays its results on an LCD screen.

Refer to 

instruction 

manual

Explosive 

material

Wear eye 

protection

Corrosive 

substance

No open 

flames

Indoor use only

BT103 | Issue 1 27/05/15

Original Language Version

© Jack Sealey Limited

Summary of Contents for BT103

Page 1: ... vicinity of the battery or engine 1 2 GENERAL SAFETY INSTRUCTIONS Familiarise yourself with the application limitations and potential hazards of the tester Also refer to the vehicle manufacturer s hand book IF IN ANY DOUBT CONSULT A QUALIFIED ELECTRICIAN Ensure that the tester is in good condition before use If in any doubt do not use the unit and contact a qualified electrician Only use recommen...

Page 2: ...or action from a menu list or returns to the main menu 4 3 SCROLL BUTTON fig 1 3 4 3 1 Scrolls through the menu items or cancels an operation 4 4 CLIPS fig 1 4 4 4 1 Connects the tester to the battery 4 5 BATTERY INTERNAL RESISTANCE 4 5 1 Internal Resistance IR is an important indicator of battery capability When Internal Resistance exceeds a certain value the engine can not be started The normal ...

Page 3: ...s connected to the positive electrode and the black clip is connected to the negative electrode The tester has an automatic protection function If the clips are accidentally reversed the screen will be dim but it will not have any adverse effects on the tester 5 2 4 Ensure that the clips have a firm secure grip on the battery terminals 5 2 5 If the tester has a poor connection it will not be able ...

Page 4: ...IN 100 1400 IEC 100 1400 EN 100 2000 SAE 100 2000 GB 100 1400 5 4 3 5 Choose the correct battery standard press enter then the menu shown in fig 8 appears 5 4 3 6 Press scroll to increase or decrease in increments 5 units Continue scrolling to the required battery rating To change from increase to decrease hold scroll for three seconds and the menu shown in fig 9 will appear Press scroll again and...

Page 5: ...th 0 Voltage 12 4V Electric current 0A or 0CCA 5 Health 60 Voltage 12 4V Charge Retest 5 4 4 The 5 Battery Test Results 5 4 4 1 Good Battery see fig 12 The battery is in good condition and ready to use Health 60 Voltage 12 4V 5 4 4 2 Good Recharge see fig 13 Good battery but low current recharge before using Health 60 Voltage 12 4V 5 4 4 3 Replace see fig 14 The battery is near to or has already r...

Page 6: ...se that the battery cables are not well connected Retest the battery in OUT OF VEHICLE mode before making a decision about replacing the battery Note After testing press scroll to return directly to the startup interface fig 15 fig 16 Environmental Protection Recycle unwanted materials instead of disposing of them as waste All tools accessories and packaging should be sorted taken to a recycling c...

Page 7: ......

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