VDIAGTOOL BT500 car battery tester is a fast and accurate car battery tester that provides comprehensive analysis of battery health as well as charging and starting tests, helping you understand the health of the battery, the starting status of the starter motor, and all charging conditions of the vehicle electronic system.

VDIAGTOOL BT500 has 🚩Load Test🚩Resistance Test🚩Ripple Analysis🚩Data Review🚩Data Print🚩polarity protection🚩spark-proof function🚩over-voltage protection and over temperature protection🚩2.8 inch HD Scree🚩Lifetime free upgrade .In addition, the battery analyzer has wide compatibility and is suitable for cars/trucks/motorcycles/SUV/ATV/boats to meet the diverse battery testing needs of users.

The Best Reasons To Buy VDIAGTOOL BT500 Battery Tester:
🔥Wide compatibility, suitable for car, light duty truck, SUV, van, motorcycle, RV, ATV, trailer, boat, yacht, mower and even golf cart;
🔥Supports 12 languages, including English, Chinese, Japanese, Korean, Italian, Dutch, German, Russian, Portuguese, Spanish, French, Polish, so that users can use it without any language barriers;
🔥Professional battery testing, battery capacity testing, cranking testing, Charging testing;
🔥Get test results quickly with 99.99% Accuracy;
🔥Works on all 6V 12V 24V batteries with ratings 5-3000 CCA;
🔥Supporting most car battery standards, such as CCA, BCI, CA, MCA, JIS, DIN, SAE and so on;
🔥Compatible with flooded, AGM flat plate, AGM spiral, GEL, EFB and so on;
🔥100% Safe Usage, reverse polarity protection, short circuit protection, overcurrent protection, anti-spark safe clips;
🔥Plug & Play & Easy To Use & Visualized Led Indicator;
🔥3-Year Warranty, 24/7 Tech Support.

 3 Test Functions of VDIAGTOOL BT500

 Battery Test
The current model provides a way to quantify the performance of a battery and is particularly useful for assessing the degree of deterioration and timing of replacement. This test ensures that the battery will provide sufficient energy when needed.
Interface: SOH: State of Health
SOH: State of Health
SOC: State of Charge
CCA: 5-3000 CCA
VOL: Resistance Test
➤ Status:
✔️ Green light: Good
✔️ Yellow light: Charging
✔️ Red light: Poor

 Charging Test
✔️Detect the Change in Battery Voltage
✔️Check & Analyze the Alternator's Charging System.
Ensure optimal battery charging with the VDIAGTOOL BT500’s Charging Test mode! This test simulates the charging process, monitoring voltage in real-time against preset standards to detect faults like undercharging or overcharging. 🔌 Pro Tip: For accurate results, turn off all electrical loads (e.g., lights, AC) during testing. The BT500’s clear feedback helps you identify charging system issues—whether it’s a faulty alternator or weak battery—saving repair costs and preventing roadside failures.

Cranking Test
✔️Monitor the Cranking Voltage & Cranking Time
✔️Health check for the Starting System
The VDIAGTOOL BT500 performs a precise Cranking Test to evaluate your starter battery's health by simulating real-world engine-starting conditions. Using the Crank Amps Test (CCA Test), it applies a high-current load to measure voltage drop—key indicators of battery strength. If the voltage fluctuates beyond ±0.5V, it may signal high internal resistance due to aging or damage. Compare results with the battery’s nominal CCA value: a significant deviation suggests poor cold-cranking performance. Perfect for quick diagnostics before winter or long trips!

 【Plug & Play & Easy To Use & Visualized Led Indicator】 
VDIAGTOOL BT500 battery and alternator tester features plug & play style, equipped with large & easy-to-view 2.8” TFT HD display, one-key battery test/review/waveform button to start working directly as you needed. Besides, the useful LED indicators show battery health conditions visually (Green: Good, Yellow: Normal, Red: Poor), supporting 12 languages setting.

【 Wide Compatibility】 
BT500 Automotive battery load tester works on all 6V 12V 24V batteries with ratings 5-3000 CCA, including regular flooded, AGM flat plate, AGM spiral, GEL, EFB battery for car, light duty truck, SUV, van, motorcycle, RV, ATV, trailer, boat, yacht, mower and even golf cart. Supporting most car battery standards, such as CCA, BCI, CA, MCA, JIS, DIN, SAE. NOTE: Does NOT work on lithium batteries.

【 Reliable Battery Analyzer】 
BT500 battery tester 12v automotive can quickly and accurately display details of the battery parameters such as voltage, internal resistance, cold cranking amp and battery health(SOH) and charge status(SOC). This battery testers will also provide you with professional advice on whether to replace or recharge the battery, helping you know the battery status in advance to prevent possible battery failures.

【 Starter & Alternator Tester】 
BT500 alternator analyzer can perform cranking test of the vehicle starter motor and check whether it’s cranking properly or not, charging test of the alternator to prevent overcharge or incomplete charge. Note: Please turn off all electrical devices (such as air conditioner, headlights, stereo or other electrical equipment）during the charging test.

【 99.99% Accuracy & Safe Design】 
BT500 battery checker tester thanks to it's powerful intelligent chip, the test result is up to 99.99% accurate. The test results can be stored and reviewed on the screen directly. Equipped with 100% high-quality safety copper clip, which has reverse polarity protection and spark-proof function, over-voltage protection and over temperature protection.

【 3-Year Warranty, 24/7 Tech Support,12 Languages】
We offer 3 Years Warranty, Lifetime technical support 📥. What's more, VDIAGTOOL BT500 Car Battery Tester support 12 kinds of languages, such as English,Chinese,Japanese,Korean,ltalian,Dutch,German,Russian,Portuguese,Spanish,French,Polish.

About  2026 VDIAGTOOL BT500   
Display: 2.8” LCD
Voltage Measuring:6V \ 12V\24V
Battery Type:VRLA,GEL,AGM,SLA
Battery Rating:5CCA ~ 3000CCA
Standards Supported:CCA,BCI,CA,MCA,JIS(26A17-245H52) ,DIN,IEC,EN,SAE
Operation Temperature:-20°C~ 60°C(-4°F~ 140°F)
Storage Temperature:0°C~ 70°C (-4°F~ 158°F)