FNIRSI® BTM-24 2000A CCA Multi-Function 12V/24V Car Battery Tester

$34.99 USD
$59.99 USD
$34.99 USD
Extra 10% off coupon BTM241, click to copy!
📁 Manuals & FirmwaresDownload

Highlights

◉ 2000A CCA Precision Tester for 12V/24V batteries

◉ Tests All Major Battery Types: AGM, GEL, EFB, Flooded

◉ One-Step Health Check: Instant SoH, CCA & internal resistance in seconds

◉ Real Cranking & Charging Analysis

◉ 6 Global Standards Supported: CCA/IEC/EN/DIN/JIS/GB

◉ In-Vehicle Testing: No need to disconnect the battery

◉ 2.4" Color Screen with Day/Night Mode

◉ Safe & Smart: Reverse polarity & overvoltage protection built-in

FNIRSI® BTM-24 2000A CCA Multi-Function 12V/24V Car Battery Tester

FNIRSI® BTM-24 2000A CCA Multi-Function 12V/24V Car Battery Tester

$59.99 $34.99

FNIRSI® BTM-24 2000A CCA Multi-Function 12V/24V Car Battery Tester

$59.99 $34.99
The FNIRSI BTM-24 Battery Tester is a compact, professional tool for fast and accurate battery health checks. It measures voltage, internal resistance, CCA, startup performance, load response, and charging system status—all in seconds. Supporting 12V/24V lead-acid, AGM, and lithium batteries with six international standards (CCA, IEC, EN, DIN, JIS, GB), it's perfect for automotive, industrial, and telecom use. The 2.4" color screen delivers clear, real-time results—no guesswork, just reliable diagnostics.
 

Features

  • Supports 12V & 24V Systems: Compatible with a wide range of vehicles and equipment.
  • Multi-Battery Type Compatibility: Works with AGM (flat plate & spiral), GEL, EFB, and standard flooded lead-acid batteries.
  • 6 International Battery Standards: CCA, IEC, EN, DIN, JIS, and GB for global accuracy.
  • Comprehensive Diagnostics: Measures voltage, internal resistance, State of Charge (SoC), State of Health (SoH), CCA rating, and load performance.
  • Two Testing Modes: In-vehicle (on-car) or out-of-vehicle (bench) testing—no battery removal needed.
  • One-Tap Cranking Test: Captures real-time cranking voltage drop during engine start for instant starter system insight.
  • Real-Time Internal Resistance Testing: Non-destructive method to assess battery aging and health in seconds.
  • Dynamic Charging System Analysis: Monitors minimum, maximum, and fluctuating voltage under real-world alternator loads.
  • Waveform Display: Visualizes voltage trends and load changes for intuitive diagnostics.
  • 2.4" Full-Color TFT Screen: With switchable Day/Night (black/white) modes for optimal visibility in any lighting.
  • Insulated Heavy-Duty Clamps: Ensure safe, secure, spark-free connections.
  • Built-in Safety Protections: Reverse polarity alert and overvoltage protection safeguard both user and battery.
  • All-in-One Design: Compact, portable, and ready for automotive, marine, industrial, and telecom applications.
  • Instant Health Report: After one test, get clear pass/warn/fail status, life estimate, and actionable recommendations.

Specifications

Basic Parameters:

Voltage Range
12V / 24V
CCA Test Range
0 – 2000 CCA (Selectable)
Screen Material
2.4-inch Color Screen
Language
Chinese, English
Product Size
80.52*155.76*28.15mm
Bare Weight
≈479g
 

Battery Test Parameters:

Battery life is low
SOH: 0-60%
Status: ❌Bad
Battery life is average
SOH: 60-80%
Status: ⚠Attention
Battery life is good
SOH: 80-100%
Status: ✔Good

※ Note: Before testing, turn off the engine and turn the key to the OFF position while the car is running.

 

Startup Test Parameters:

No Action Needed
Cranking Voltage: ≥10.2V
Status: ✔Good
Monitor Battery Health
Cranking Voltage: 9.6~10.2V
Status: ⚠Weak
Check Wiring / Charging System
Cranking Voltage: <9.6V
Status: ❌Low

※ Note: Before testing, turn off the engine and turn the key to the OFF position while the car is running.

 

Load Test Parameters:

Battery & Charging OK
Min Voltage: >13.4V (24V system >25.6V)
Status: Normal
Check Alternator belt / Wiring for Issues
Min Voltage: >12.8V (24V system >25.6V)
Status: Low Voltage

※Note: Before the test, start the car, select the load test mode, press the OK button, increase the speed to 2000~2500, and then press the OK button to obtain the measurement results.

 

Charging Test Parameters:

Overvoltage - Check Regulator
Max Voltage: >15.0V (24V system >30.0V)
Undervoltage - Check Battery & Alternator Wiring
Max Voltage: >13.3V (24V system >26.6V)
Normal - Alternator Excellent
Max Voltage: >13.9V (24V system >27.8V)
Normal - Alternator Good
Max Voltage: >13.7V (24V system >27.4V)
Normal - Alternator Normal
Max Voltage: >13.5V (24V system >27.0V)
Normal - Check Alternator Condition
Max Voltage: >13.3V (24V system >26.6V)
 

Displacement Vehicle Test Parameters:

Engine Displacement 1200~1600 CC
Reference CCA Value: 350
Engine Displacement 1600~2000 CC
Reference CCA Value: 500
Engine Displacement 2000~3000 CC
Reference CCA Value: 650
Engine Displacement 3000 CC Up
Reference CCA Value: 750
 

Package List:

◉ BTM-24 Host *1
◉ User Manual *1
◉ Data Cable *1
◉ Storage Bag *1
 

Package List:

◉ BTM-24 Host *1
◉ User Manual *1
◉ Data Cable *1
◉ Storage Bag *1

Using Environment and Precautions

The device should be stored in a soft case, and the operating environment should be at a temperature of -5~40℃, and the relative humidity should not exceed 80%.

The device should be stored in a clean and dry place to avoid moisture, mold, heavy pressure, mechanical damage,humidity and direct sunlight.

Avoid using in the rain or fog, avoid dropping or shocking.

When the screen on the LCD does not light up, it indicates that the voltage is too low, and it needs to be charged in time.

Copyrights

The product specifications are subject to change without notice, allfinal interpretation rights were reserved by FNIRSI Technology Co., Ltd, All trademarks, product images, technical parameters are properties of FNIRSI Technology Co.. Ltd. All rights reserved.

Warranty

30-Day return and refund guarantee (Refer to our Refund Policy), 2-year warranty (only available for orders purchased directly from fnirsi.com), lifetime technique support by FNIRSI.
Please feel free to reach us with any concerns:
Email: service@fnirsi.com / info@fnirsi.com
We strive to reply to you within 24 hours.

FNIRSI has started researching and development manufacturer of quality optical products including Golf rangefinder, laser,measure device and binoculars since 2016.
Focus on the development,researching, and manufacturing for over 8 years.
We are committed to delivering premium products and exceptional customer service, striving to be your most reliable and intelligent assistant.

At Fnirsi, we are committed to providing our customers with the best value for their purchases. To ensure you always get the best price, we offer a 30-day price guarantee on all products purchased directly from fnirsi.com. This policy aims to give you confidence and peace of mind when shopping with us.

What is the 30-Day Price Guarantee?

Our 30-day price guarantee means that if you purchase a product from fnirsi.com and the price of that product drops within 30 days of your purchase date, you are eligible for a refund of the price difference of the products. (Prices are based on USD. No refunds will be given for price changes in other currencies due to exchange rate fluctuations.)

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If you notice that the price of a product you purchased from fnirsi.com has dropped within 30 days, follow these steps to apply for a refund of the price difference:

  • Documentation: Prepare your order number and proof of the price drop (such as a screenshot and link to the product page showing the reduced price).
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Thank you for choosing Fnirsi. If you have any questions or need further assistance, please do not hesitate to contact our customer support team at info@fnirsi.com.

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