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OBD2 Scanner and Battery Tester, 2-in-1 Car Diagnostic Tool, Check Engine Code Reader, 12V Battery Analyzer, Relay Tester, Fuel Injector Tester for Heavy Duty Truck, T400
✅ In stock
F
Grade
Analysis Confidence
90%
⚠️ Price may have changed. Last updated 24+ hours ago — confirm on Amazon.
Check Deal at Amazon
Price verified Sep 18, 2026 2:54 AM · Prices & availability subject to change
Is This a Good Price on Amazon?
💤 Not a Deal- 💤Verdict: Not a Deal. Price is at or above historical norms. Best to wait for a sale.
- 💰The current price is slightly above the going rate for this product — worth watching for a drop.
- 🏷️The retail sticker price has been slashed by 70% — a steep markdown from the official listing.
- 📉Better-priced windows have occurred before, though not frequently — today's price is reasonably competitive.
- ➡️Pricing has held fairly steady, with no strong push in either direction.
How We Scored This Deal
Price Competitiveness
0/28
Recent Value
0/22
Market Standing
0/20
Deal Strength
0/20
Momentum
4/10
📝 Product Overview
🏪 Sold by
TopDiag
📦 Fulfillment
Fulfilled by Amazon
🚚 Shipping
Free Shipping
Product Details
✓BATTERY TESTER: With intelligent chips enabling precise diagnostics, this car battery tester delivers exceptional accuracy of 99.8%, offering reliable insights into your battery's condition. Notice: To ensure accurate results, please select the correct battery type, standard, and CCA or AH value, and confirm the in vehicle/out of vehicle condition and temperature (above/below 0°F) prompts correctly.
✓OBD2 SCANNER: The TopDiag T400 car scanner diagnostic tool can easily determine the cause of the check engine light coming on, quickly read and clear fault codes, read live data & hard memory data, view freeze frame, I/M monitor readiness and collect vehicle information. Instead of taking car to mechanic shop, you can use it to check the trouble code and show code definition by yourself.
✓RELAY TESTER: The ultimate solution for all your relay needs. With relay test function, you'll have the power to tackle any project with ease. Whether it's fixing your lights on the go or ensuring your road trip stays illuminated through out the night. WARNING: Ensure relays DC voltage is matched with vehicle battery DC voltage.
✓FUEL INJECTOR TESTER: It saves your time by pinpointing whether poor engine performance is caused by clogged, leaking, or faulty fuel injectors themselves, or by their electrical controls. It instantly diagnoses rough idle, poor acceleration, and high fuel consumption by identifying bad fuel injectors, saving you costly guesswork.
✓FITS 99% VEHICLES: Supporting various battery types (including flooded, AGM, GEL, EFB) for cars, trucks, hybrids, SUVs, boats, RVs, and motorcycles. TopDiag T400 engine code reader complies with multiple standards (JIS, EN, DIN, SAE, CCA, BCI, GB, CA, MCA, and IEC), ensuring comprehensive testing for all requirements. Notice:It's not compatible with 6V batteries OR lithium batteries.
✓BEFORE YOU BUY: There is no built-in battery, so it's not rechargeable. It works when you connect it to your car battery / DLC interface.
⚙️ Specifications
Brand
TopDiag
Power Source
Corded Electric
Style
T400
Color
Black
Min. Operating Voltage
8 Volts
Specification Met
CE, ETL
UPC
794969059321
Manufacturer
TopDiag
Package Dimensions
9.61 x 5.67 x 3.39 inches
Item Weight
989 g
ASIN
B0FT3BGTQ9
