The fix is in.

Take charge of battery health.

Shop the BT1 Series

OTOFIX BT1 Series of Battery Testers

Optimized to assess the health and longevity of a wide range of motor vehicle and recreational vehicle battery types and specifications, OTOFIX BT1 battery testers will put you in charge of your battery’s future. You’ll know when it’s at capacity, when it needs a charge, when it's getting old, and when you should have bought a new one last week.

The OTOFIX BT1 offers pro-grade battery testing both in and out of vehicle to keep you on the road throughout the year. Featuring a smart 5.5-inch touchscreen, the BT1 has everything you need to examine your battery and electrical systems and even register a new battery with the fastest, most convenient experience ever.

The OTOFIX BT1 Lite is a wireless battery and electrical systems tester that, when paired with the Battery Tester App on your smartphone or OTOFIX tablet, enables you to assess the health and condition of your battery quickly and easily without breaking your bank. 

BT1BT1 Lite
Adaptive Conductance TestingAdaptive Conductance Testing
Starter & Generator TestStarter & Generator Test
Battery RegistrationX
Electric System ResetX
Read/Erase CodesX
AutoVIN, VIN/Plate Scan
Thermal Printer
Optional DVOM / Amp Clamp Set
Repair ReportRepair Report

The OTOFIX BT1 Advantage

Car batteries really only have one job, but it's a big one. And if they fail on you, they leave you stranded. They don’t like the cold, they crave attention from you at least every few weeks, and after all that they still only last a handful of years. Who in their right mind would willingly enter into such a one-sided relationship? So, how can you make the best of this uneven marriage? Examine your battery regularly with an OTOFIX B1 Battery Tester.

Advanced Testing Methods

More Decisive Results

Smart System Detection

Bolster Confidence

BMS Reset

Broaden Your Service Expertise

Comprehensive Systems Diagnostics

Unleash More Possibilities

Accurate Diagnostics

Adaptive Conductance test technology
provides more accurate test results.

  • Reduce misdiagnosis
  • Diagnose low capacity batteries
  • Reduce need to charge & retest

BT1 Smart System Detection

Automatically identifies battery parameters and displays vehicle-specific battery locations by VIN.

AutoVIN: AutoVIN detection when VCI is connected or scan VIN to identify battery parameters.

Guided Battery Replacement procedure with promoted memory reset.

Graphic Instruction for battery position and testing that helps you locate the battery and perform the test quickly.

Intelligent Electrical Diagnostics

Comprehensive diagnostics solutions for testing 12V/24V batteries and electrical systems.

Deliver more decisive results using the Adaptive Conductance algorithm for both in-vehicle and out-of-vehicle tests.

Provide complete diagnostics for electrical systems with automated data

BMS Reset Functionality

Subscribe to BMS Reset to get access to automatic battery registration and more.

All System Diagnostics

Subscribe to the Diagnostics Feature to expand your tester
to a comprehensive tool with all system diagnostics.

Expansive Vehicle Coverage

Covers 98% of the US, European, and Asian
vehicle makes on the market.

Complete Capabilities

Read and clear codes for all available systems.

Dynamic Service Experience Faster & Easier Operation

The BT1 offers a rich user experience with a large touchscreen and on-screen support resources.

Improves service effectiveness with
its 5.5-inch color LCD screen.

Offers easy navigation through
all service processes.

Supported Battery Types

  • Battery Ratings:


  • Battery Type:

Test Flooded, AGM, AGM_Spiral, EFB and GEL Batteries
Test 6- and 12-volt Batteries: 100 - 3000 CCA
Test 12- and 24-volt Cranking/Charging Systems

BT1 Series Downloads

User Manual

BT1 Quick Guide

BT1 Lite Quick Guide