Topdon BT50 User manual

12V Battery Tester 100-2000 CCA USER MANUAL

CONTENTS
Safety Is Always The
First Priority ······································· 5
Compatibility
What is in the Box
Product Overview
Operation Introduction
FAQ
Technical Specication
Warranty
······································· 9
······································· 8
······································· 15
······································· 7
······································· 16
······································· 17
······································· 7

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MANUAL SUPPORT IN
OTHER LANGUAGES

SAFETY IS ALWAYS THE
FIRST PRIORITY!
READ ALL INSTRUCTIONS BEFORE USING
For your safety, the safety of others, the
product, and the vehicle you are working on,
PLEASE, CAREFULLY READ AND MAKE SURE
YOU FULLY UNDERSTAND ALL THE SAFETY
INSTRUCTIONS AND MESSAGES ON THIS
MANUAL.
ONLY OPERATE THE TEST IN A
WELL-VENTILATED AREA since the vehicle
produces carbon monoxide, a toxic and
poisonous gas, and particulate matter when
the engine is running.
ALWAYS WEAR APPROVED SAFETY EYE
PROTECTION to prevent damage from sharp
objects and caustic liquids.
ALWAYS BE AWARE OF MOVING PARTS (such
as coolant fans, pulleys, belts) since they spin
or turn at high speeds when the engine is
running.
DO NOT TOUCH HOT ENGINE PARTS to
prevent severe burns. The engine parts
become very hot when the engine is running.
EN |5

DO NOT WEAR LOOSE CLOTHING OR
JEWELRY WHEN WORKING ON AN ENGINE.
Loose clothing can easily be caught in the
engine's fan, pulleys, belts, etc. and jewelry is
highly conductive, which causes severe burn
or electric shock if it contacts with electricity.
DO NOT CUT THE PRODUCTS CORDS OR
SUBMERGE THEM IN WATER. The product is
an electrical device that can cause shock and
severe burns.
Battery acid is extremely corrosive. If
acid gets into your eyes, FLUSH THEM
THOROUGHLY WITH COLD RUNNING WATER
FOR AT LEAST 20 MINUTES AND SEEK
MEDICAL ATTENTION IMMEDIATELY. If battery
acid gets on your skin or clothing, WASH IT
IMMEDIATELY WITH A SOLUTION OF WATER
AND BAKING SODA.
ALWAYS SHIFT THE GEAR TO P (FOR
AUTOMATIC TRANSMISSION) OR TO NEUTRAL
(FOR MANUAL TRANSMISSION) AND MAKE
SURE THE PARKING BRAKE IS ENGAGED.
ALWAYS USE A DIGITAL MULTIMETER WITH
AT LEAST 10 MEGOHMS OF IMPEDANCE
when conducting electrical tests on vehicles
to prevent causing damage to on-board
electronic components.
NO SMOKING ANYWHERE NEAR THE VEHICLE
when testing. The fuel and battery vapors are
highly ammable.

EN |7
Refer to the battery label for battery type and CCA values
(Cold Cranking Amp).
1. Regular Flooded
2. AGM Flat Plate
3. AGM Spiral
4. GEL
5. EFB
Note: If your vehicle battery is not the battery mentioned
above and you are not sure about which type it is, please
choose AGM to conduct test, and the error is within 10%.
TOPDON BT50 Vehicle Battery Tester
User Manual
COMPATIBILITY
WHAT IS IN THE BOX

OK
Operations
Page up, or increase the battery rating values
Page down, or decrease the battery rating values
Conrm, enter or proceed
Cancel, or return to the previous page
Connect to the negative terminal of the vehicle battery
Connect to the positive terminal of the vehicle battery
Buttons
Black Smart
Clamp
OK
Red Smart
Clamp
PRODUCT OVERVIEW

EN |9
The tool is solely powered by the vehicle battery. Connect
the RED (+) Positive Battery Clamp to the (+) positive battery
terminal, and connect the BLACK (-) Negative Battery Clamp
to the (-) negative battery terminal. Ensure that the clamps
are securely attached to the correct terminals.
The LED display will show the message below:
Press the "OK" to enter the main menu, then choose your
preferable language.
OPERATION
INTRODUCTION
1. BATTERY TEST (FOR 12V BATTERY)
TOPDON BT50 will test each battery according to the
selected actual system standard and rating marked on the
battery.
6. About
1. English
2. Fsançais
3. Deutsch
4. Español
5. Italiano
6. РУССКИЙ

1.1 BEFORE TEST
The engine and all other accessory loads must be OFF in
order to get accurate results. Turn on the vehicle headlamps
for 2~3 minutes until the battery voltage drops back to
normal value if the battery is just fully charged.
1.2 STEPS
1) Press the "OK" button to display the main menu. Then
select "1. Battery Test" and press the "OK" button to conrm.
2) Press and hold the "▲" or "▼" button to select the "Battery
Type" (specied on the battery rating label), then press "OK"
to continue.
3)Press and hold the "▲" or "▼" button to select the correct
testing standard (specied on the battery rating label), then
press the "OK" button to continue.
6. About

EN |11
4) Press and hold the "▲" or "▼" button to select the battery
rating values (specied on the battery rating label).
5) Press the "OK" button to start the battery test.
6) The test result will display as follows:
7) Replace battery if test result displays as below :
2. CRANKING TEST
2.1 BEFORE TEST
The engine and all other accessory loads must be OFF in
order to get accurate results.
GOOD BATTERY

2.2 STEPS
1) Press the "OK" button to display the main menu. Then
select "2. Cranking Test" and press the "OK" button to
conrm.
2) Start the engine within 30 seconds.
3) The result will show as below:
Please refer to the table below to conrm the test result for
12V batteries.
GOOD≥10.7V
9.6~10.7V
<9.6V
NORMAL
CRANKING LOW
Cranking Voltage Conclusion
29
6. About
Crankingt Test
TIME 1003ms
VOLTAGE 11.59V

EN |13
3. CHARGING TEST
3.1 BEFORE TEST
The engine must be ON during test.
3.2 STEPS
1) Press the "OK" button to display the main menu. Then
select "3. Charging Test" and press the "OK" button to
conrm.
2) Start your engine, then press the "OK" button to conduct
a "Ripple Test". The interface will stay for 5 seconds and then
automatically jump to next page.
3) Follow the on-screen instructions to increase your engine
speed to 2500 r/min and hold for 5 seconds. Then press the
"OK" button and wait a few seconds for the test result.
6. About
Please start engine,
Press OK to
continue.

4. REVIEW DATA
4.1 Press the "OK" button to display the main menu. Select
"4. Review Data" and press the "OK" button to conrm.
4) The test result will show as below:
Please refer to the table below to conrm the test result for
12V batteries.
* For reference only. Poorly functioning batteries can affect
the test data.
Status Battery Voltage Conclusion
Headlamps & A/C OFF
(Depress Accelerator)
≥15.0V CHARGING HIGH
CHARGING NORMAL
CHARGING LOW
NO OUTPUT
13.2V~15.0V
12.8V~13.2V
<12.8V
6. About

EN |15
4.2 The last test result will be displayed as below:
Note: This battery tester saves the results of the last test, but
not all the test data.
FAQ
Q1: Can BT50 test the battery installed in the vehicle?
Q2: Is the test result accurate?
Q3: What batteries can BT50 work on?
Q4: Is BT50 designed with any built-in protections?
A: Yes, it supports in-vehicle and out-of-vehicle testing.
A: Yes. Our BT50 features advanced conductance detection,
able to give you accurate test results in seconds.
A: It works on 12V regular ooded, AGM Flat plate, AGM Spiral,
GEL and Deep Cycle batteries, with CCA between 100 to
2000.
A: Yes. It offers peace of mind with extra-safe Reverse Polarity
and Sparkproof protection, and easy operations even if you’re
new to battery testing.
GOOD BATTERY

Q5: How do I conrm if my vehicle battery is bad or good?
Q6: Can this battery tester estimate the remaining
capacity of my battery?
A: The battery tester will display SOH (State of Health), SOC
(State of Charge), CCA (Cold Cranking Ampere), Voltage,
Internal Resistance, and Rating, with an intuitive test result of
"GOOD" or "BAD" for your reference. If the internal resistance
is too large, it indicates a broken battery.
A: Yes. The battery tester will display SOC (State of Charge)
to express as a percentage of your battery’s rated capacity, a
measure of its condition to assess the potential energy.
Note that a decent SOC (State of Charge) doesn’t mean
the battery is in good condition. You need to refer to your
battery’s actual CCA Value and Internal Resistance for further
analysis.
TECHNICAL SPECIFICATION
Working Temperature:
Storage Temperature:
Operating Voltage:
Dimensions:
Testing Range:
Battery Capacity Range:
-10°C~50°C (14°F~122°F)
-20°C~70°C (-4°F~158°F)
DC 8~16V
125.3 x 65.5 x 18.6mm (4.9 x 2.6 x 0.7")
100~2000 A
30~200 Ah

EN |17
WARRANTY
TOPDON ONE YEAR LIMITED WARRANTY
The TOPDON Company warrants to its original purchaser
that TOPDON products will be free from defects in material
and workmanship for 12 months from the date of purchase
(Warranty Period). For the defects reported during the
Warranty Period, TOPDON will, according to its technical
support analysis and conrmation, either repair or replace
the defective part or product.
TOPDON shall not be liable for any incidental or
consequential damages arising from the use, misuse, or
mounting of the device. Some states do not allow limitations
on how long an implied warranty lasts, so the above
limitations may not apply to you.
This limited warranty is void under the following
conditions:
Misused, disassembled, altered, or repaired by unauthorized
stores or technicians.
Careless handling and violation of operation.
Notice: All information in this manual is based on the
latest information available at the time of publication,
and no warranty can be made for its accuracy or
completeness.
Topdon reserves the right to make changes at any time
without notice.