Fnirsi BTM-24 Multi-Function Battery Tester

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.

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Please look the file section for more technical info.