Expensive shop battery tests vs cheap meters? UK expert Dave tests the iCarsoft BT900 battery tester for BatteryTester, CCA, and charging system analysis.
About the Reviewer
UK DIY Automotive Expert
DavesDiscoveries is a trusted UK channel focused on DIYCarRepair and professional scanner accessory reviews.
Battery & Charging Specialist
Specializes in AGM/EFB/lead-acid battery testing and charging system diagnostics for DIYCar owners.
Multi-Vehicle Testing
Tested across various makes, covering StartStopBattery and classic lead-acid applications.
Must-Have Accessory
The BT900 is an essential upgrade for any professional scanner user.
DavesDiscoveries — iCarsoft BT900 Test
Watch the full battery tester review on YouTube.
Watch on YouTubeVideo Content Introduction
Visiting shops for basic battery/charging tests costs high labor fees. Cheap meters only read voltage, missing CCA and ripple. UK expert Dave showcases the iCarsoft BT900 battery tester:
- Deep Function Expansion: Plug-and-play with scanners, unlocking battery health, starter and charging analysis.
- All Battery Compatibility: Supports AGM, GEL, EFB and flooded, including StartStopBattery.
- Clear Live Reports: Displays voltage, CCA and ripple on scanner HD screen.
- 3-Minute Testing: Powered by scanner, no extra supply needed.
- Preventive Maintenance: Catch cold-weather battery failures early.
Creator Final Verdict
"iCarsoft BT900 takes battery testing to a new level. A must-have for DIY and professional users."
Expert Test Star Rating
Battery Tester Benchmark
5-star essential scanner accessory.
| Function | Rating | Field Notes |
|---|---|---|
| Battery Health | ★★★★★ | Precise CCA analysis, lab-grade accuracy. |
| Charging System | ★★★★★ | Monitors voltage/ripple, detects overcharge. |
| System Integration | ★★★★★ | Plug-and-play with CR MAX, no setup. |
| All Battery Types | ★★★★★ | AGM/EFB/GEL/flooded, full coverage. |
| Easy Operation | ★★★★★ | Graphical UI, beginner-friendly. |
| Hardware Build | ★★★★★ | Heavy-duty clamps, durable cables. |
| Value | ★★★★★ | Low cost, lab-level performance. |
| Overall Rating | ★★★★★ | Top battery tester accessory. |
Conclusion
Avoid costly shop tests and roadside breakdowns. UK expert Dave confirms the iCarsoft BT900 delivers lab-grade CCA and charging analysis. The ultimate accessory for ProfessionalScanner users.
Frequently Asked Questions
What is the iCarsoft BT900 and how does it work?
The iCarsoft BT900 is a professional battery & charging system test clip accessory. It connects directly to iCarsoft scanners (no extra power needed) to perform comprehensive battery, starter, and alternator tests in 3 minutes.
Which scanners are compatible with the BT900?
Works seamlessly with iCarsoft CR MAX, CR MAX BT, CR Eagle, MT PRO and more. No registration or setup required — plug-and-play.
What battery types does it support?
Supports all common 12V batteries: flooded (lead-acid), AGM, GEL, and EFB — including modern StartStop batteries.
What tests can the BT900 perform?
Battery health (CCA/SOH/SOC), starter cranking test, alternator charging test, voltage, current, and ripple/pulsation analysis.
Does it display results on the scanner screen?
Yes. All live data, CCA values, and charging ripple graphs show directly on your scanner’s HD display.
Is it suitable for cold-weather testing?
Yes. Designed to detect weak batteries before winter, helping avoid no‑start situations and roadside breakdowns.
Are updates free for the BT900?
Yes. It receives lifetime free updates via your compatible iCarsoft scanner, ensuring ongoing compatibility.
What’s included in the BT900 package?
BT900 test clip, heavy‑duty clamps, connection cable, user manual, and quick start guide.