In a December 24, 2025 video, Daves Discoveries gives the iCarsoft BT900 Battery Test Clip a concise real-world trial with an iCarsoft CR MAX. The footage shows the accessory pairing with the tablet, testing a configured 500A flooded battery, identifying poor battery health and recording a low cranking-voltage result.
The BT900 turns a compatible iCarsoft scanner into a guided battery, starting and charging-system tester. In this video, it reports 23% state of health, 47% state of charge and a 6.78V cranking drop on the test battery, supporting the reviewer’s conclusion that the battery is near the end of its useful life.
Key Takeaways
Embedded Video
Video credit: The iCarSoft BT900 Battery Test Clip for CR MAX ULTRA & ELITE, published by Daves Discoveries on December 24, 2025.
Content relationship disclosure: This is independent third-party owner content. The video and its public description do not state that it is sponsored, and they do not say whether the BT900 was purchased or supplied. It is therefore not presented here as a paid endorsement or a confirmed gifted-product collaboration.
Test Vehicle and Setup
| Item | What the Video Establishes |
|---|---|
| Battery test accessory | iCarsoft BT900 Battery Test Clip |
| Display / control device | iCarsoft CR MAX touchscreen diagnostic tablet |
| Vehicle make and model | Not specified. The video is filmed inside a vehicle but does not identify it. |
| Vehicle model year | Not specified. |
| Engine | Not specified. Fuel type, displacement, cylinder count and engine code are not stated. |
| Battery configuration entered | Car > Regular Flooded > CCA > 500A |
| Battery brand, age and physical size | Not specified. |
| Scanner / BT900 software version | Not specified. No firmware, application or database build number is shown. |
| Connection and power | The CR MAX searches for and pairs with the BT900 over Bluetooth. The reviewer states that the clips are powered by the connected vehicle battery and do not require separate charging. |
| Initial test condition | The application instructs the reviewer to ensure the vehicle is turned off before the battery test. |
What the Reviewer Tested
- Battery Tester app access: the reviewer opens the newly available Battery Tester tile on the CR MAX.
- Bluetooth pairing: the tablet searches for and connects to the BT900 battery clips.
- Battery configuration: he selects a saved quick configuration for a regular flooded 500A CCA car battery.
- Battery health check: the BT900 produces health and charge data, including 242A, 23% SOH, 12.30V and 47% SOC, and displays a replacement recommendation.
- Cranking test: the reviewer follows the prompt to start the engine so the tool can capture voltage drop during cranking.
- Cranking result: the screen shows a cranking time of about 3518ms, approximately 6.78V and the message “Cranking Voltage low.”
Features Demonstrated
| Feature | Evidence in the Video | Classification |
|---|---|---|
| Battery Tester application | The Battery Tester tile is opened on the CR MAX home screen | Demonstrated |
| Bluetooth accessory pairing | The CR MAX searches for and connects to the BT900 clips | Demonstrated |
| Battery-type and rating setup | A regular flooded car battery with a 500A CCA rating is selected | Demonstrated |
| Battery health test | The screen displays SOH, SOC, voltage, measured amps and a replacement recommendation | Demonstrated |
| Cranking test | The engine is started and the application records cranking time and a low-voltage result | Demonstrated |
| Charging observation | The reviewer notes that the system is charging after the engine starts, but does not complete the dedicated charging-test workflow | Observed / described |
| Load and accessory testing | Headlights, fans and other electrical loads are described as further test options | Described |
| Save or print report | The Save Report control is visible and the reviewer describes saving or printing a finished report | Shown / described |
Current BT900 Specifications — Official iCarsoft US Source
The video records one short test performed with a CR MAX in December 2025. The current iCarsoft US product page lists a broader BT900 feature set. The following are official product specifications, not additional tests completed in the video:
- Five test categories: battery health, starter system, charging system, voltage and conductance, and ripple/pulsation.
- 9V to 30V measurement range.
- Supported battery types: regular flooded, AGM flat plate, AGM spiral, GEL and EFB.
- Multiple rating standards: including CCA, DIN, IEC, EN and JIS.
- Vehicle applications: automotive and powersports applications.
- Current scanner compatibility listed by iCarsoft US: CR MAX, CR MAX BT, CR Max P, CR Eagle, CR Eagle P and MT PRO, with compatibility expected to expand through future firmware updates.
Compatibility notice: BT900 availability and functions depend on the connected iCarsoft scanner model, installed firmware and Battery Tester application version. Broader diagnostic functions on the host scanner also vary by vehicle brand, model, production year, ECU/module configuration and software version. Confirm current scanner and battery compatibility before purchase or testing.
What the Reviewer Liked
The review presents the BT900 as a practical way to make familiar multimeter-style checks easier and more structured. Instead of manually watching a meter while moving between the battery and the driver’s seat, the reviewer can start the guided test from the CR MAX, follow the prompts and view the results on the tablet in front of him.
The strongest positive is the clarity of the diagnostic outcome. The health test does not stop at displaying voltage: it combines the configured battery rating with measured health and charge values, then gives a direct replacement recommendation. The cranking test adds another useful piece of evidence by capturing the voltage drop as the engine starts. The reviewer also values the option to continue into charging and load checks and to create a report after testing.
Who This Battery Tester Is For
The BT900 is a strong fit for owners and technicians who already use a compatible iCarsoft diagnostic tablet and want guided battery, cranking and charging-system checks on the same screen. It is particularly useful for serious DIY maintenance, pre-winter battery checks, used-vehicle inspections and workshop intake testing where a clear result and report-ready workflow can save time.
Users who only need an occasional raw voltage reading may already have a suitable multimeter. The BT900’s advantage is the structured workflow: battery-type setup, interpreted health data, cranking capture and access to further charging-system checks through the iCarsoft interface.
Final Verdict
The Daves Discoveries video gives the iCarsoft BT900 a compact but persuasive real-world demonstration. With the accessory paired to a CR MAX, the reviewer moves from battery configuration to health data and then to a completed cranking test in only a few minutes. The results are easy to understand: the battery shows low state of health, a replacement recommendation and a 6.78V cranking drop.
That makes the BT900’s value clear. It extends a compatible iCarsoft tablet beyond fault-code work and turns battery and starting-system checks into a guided, screen-based process. The video proves the core health and cranking workflow; the current official specification provides additional room for charging, conductance and ripple testing, subject to scanner compatibility, firmware and test conditions.
Frequently Asked Questions
What scanner was used with the iCarsoft BT900 in this video?
Which vehicle was used for the BT900 test?
What type of battery did the reviewer test?
What battery-health result did the BT900 display?
Did the reviewer complete a cranking test?
What additional tests does the BT900 support?
Which iCarsoft scanners currently support the BT900?
Sources
- Daves Discoveries: “The iCarSoft BT900 Battery Test Clip for CR MAX ULTRA & ELITE”, published December 24, 2025. Video metadata, English auto-generated captions and source frames reviewed September 14, 2026.
- iCarsoft US: iCarsoft BT900 Battery Test Clip. Current specifications reviewed September 14, 2026.
Editorial note: Demonstrated video actions and current official product specifications are identified separately. Battery results depend on correct battery-type/rating selection, terminal connection, battery condition and test procedure. Scanner compatibility and available functions depend on the scanner model and installed firmware.
