AUTOOL BT880 · Leakage-Current Battery Tester
Monitor Key-Off Current and Print the Findings
Check 12 V/24 V lead-acid battery and vehicle-system behavior, monitor key-off current, record current and voltage waveforms, and print results for work orders or customer reports. Use the total-current reading to decide when circuit isolation is needed.
- 8–30 V Measurement Range
- 15 mA–5 A Drain Range
- Battery, Cranking And Charging Tests
- Voltage And Current Waveforms
- Built-In Thermal Printer

Key Features
Battery Testing, Leakage Monitoring and Printout
Battery Health Test
Run battery testing to check voltage, CCA, resistance, SOC, SOH, and overall battery condition based on the selected battery type and rating standard.
Cranking And Charging Tests
Use cranking test and charging system test to evaluate starting performance and charging status, helping diagnose common vehicle electrical faults.
Maximum Load Test
The Maximum Load menu observes system voltage while the engine runs and vehicle electrical loads are switched on. It is not a traditional high-current resistive battery load test.
Parasitic Drain and Leakage Current Monitoring
The negative-side connection observes total current from 15 mA to 5 A and records its waveform. Locating the responsible circuit requires a separate vehicle sleep-state and fuse/circuit isolation procedure.
Voltage And Current Monitor
The V/A monitor displays voltage and current waveforms, allowing users to observe voltage fluctuation and current changes during inspection.
Real-Time Temperature Sensor
The built-in sensor displays ambient temperature so battery results can be reviewed with hot or cold operating context; no automatic result-compensation algorithm is assumed.
Data Review And Playback
BT880 can record previous test data and battery voltage values, so users can review historical results and compare vehicle battery behavior over time.
Built-In Thermal Printer
Print battery test results directly from the tester and attach them to work orders, customer reports, or workshop maintenance records.
Remote Firmware Upgrade
Remote firmware upgrade support helps keep the tester current with software improvements and function updates when available.
18 Language Settings
Choose from 18 language settings for test menus and operation.
3.2-Inch Color Screen
Read test information on a 3.2-inch color screen, with the paper compartment integrated into the handheld tester.
Lead-Acid Battery Selection
Select the correct lead-acid battery type and rating standard before testing. BT880 supports an 8–30V voltage measurement range.
Handheld Test Unit
The 203 × 106 × 55mm body combines the display, test controls and report printer in a single unit.
Temperature Affects Batteries
The built-in sensor displays ambient temperature so battery results can be reviewed with hot or cold operating context; no automatic result-compensation algorithm is assumed.
3 Years Warranty Support
Main unit: 3-year warranty. Standard accessories: 1-year warranty. Warranty Policy.
Safe Use
Protect the Vehicle Sleep-State Measurement
Correct Leakage Test Connection
Connect on the documented negative side, allow the vehicle to reach its specified sleep state, and use total-current monitoring to decide when circuit isolation is needed.
Supported Battery Types
Regular flooded, AGM flat plate, AGM spiral, GEL, and EFB enhanced flooded batteries.
Rating Standards
CCA, JIS, GB, SAE, MCA, CA, DIN, IEC, EN, and BCI rating standards are supported.
Detection Ranges
Operating voltage is 8-30V DC, leakage current detection range is 15mA-5A, and CCA detection range is 30-2000CCA.
Lithium Battery Note
Designed for supported lead-acid batteries; choose BT960 for lithium battery testing.
Battery and Charging-System Testing
BT880 provides battery, cranking, charging-system, load, voltage/current monitoring, printing, and data-review functions; use separate charging equipment when charging is required.
Supported Battery Types
Supported types include regular flooded, AGM flat plate, AGM spiral, GEL, and EFB batteries. Choose BT960 for lithium battery testing.
Correct Leakage Test Connection
For leakage current monitoring, connect the battery clamps correctly, disconnect the negative terminal as instructed, and use the special leakage clamp on the vehicle negative bus.
Use The Manual For Setup
Follow the BT880 manual for battery type selection, rating standard selection, clamp connection, leakage monitoring, data review, printing, and firmware upgrade operation.
Thermal Paper Required
The built-in printer uses thermal paper and does not require ink. Replace the thermal paper roll when printing becomes unclear or the paper runs out.
Use the Results to Plan the Next Check
Use CCA, SOC, and health indicators with the battery rating, charge state, temperature, and vehicle test results. These algorithm-based indicators are not controlled amp-hour measurements.
Result Guide
Read the Result Before Deciding the Next Step
Measured Voltage
Assess battery health by combining voltage with state of charge, temperature, terminal contact, and the full test result.
CCA or Conductance Output
Compare the tester’s algorithm output with the rating standard and value entered from the battery label. Repeat unexpected results after checking terminal contact and charge state.
SOC and Health/Life
Use SOC and health percentages as screening indicators, and compare them with the battery label, charge state, and repeat test results.
Cranking and Charging
Keep cranking voltage, running-system voltage and loaded-system observations separate. Use the vehicle procedure and operating state to decide the next check.
Specifications
BT880 Specifications
| Tests, Monitoring & Protection | |
|---|---|
| Battery Test | Yes |
| Cranking Test | Yes |
| Charging System Test | Yes |
| Reverse Polarity Protection | Yes |
| Maximum Load Test | Yes |
| Thermal Monitor | Yes |
| Leakage Current Monitoring | Yes |
| Battery Compatibility & Ranges | |
| Conventional Lead-acid Batteries | Yes |
| AGM Flat Plate Batteries | Yes |
| AGM Spiral Batteries | Yes |
| GEL Batteries | Yes |
| EFB Enhanced Flooded Batteries | Yes |
| Test Range(CCA) | 30~2000 CCA |
| Applicable Battery Rated Voltage | 12V/24V |
| Voltage Test Range | 8~30V |
| Interface, Records & Power | |
| Data Printing | Yes |
| Data Records | Yes |
| Software Upgrade | Yes |
| Color Screen | Yes |
| Screen Size | 3.2 inch |
| Multi-Language | 18 |
| Power Supply | Connect 12V Battery |
Manual & Support
Find Manuals, Paper and Product Support

AUTOOL BT880 User Manual
Open the PDF manual for AUTOOL BT880 battery and system tests, leakage monitoring, temperature sensing, data playback, report printing, safe connection and troubleshooting support.

Package Contents
See What Comes in the Box
- Main UnitAUTOOL BT880 battery and system tester with built-in thermal printer
- Battery Clamp CableMain red and black clamp cable
- Leakage Test CableYellow leakage current test clamp cable
- Printer ConsumableThermal paper roll
- DocumentationBT880 user manual
- Storage / PackagingRetail box or carrying case
Buyer Questions
Battery Test, Fit and Result Questions
Does BT880 Support Lithium Batteries?
No. BT880 does not support lithium battery testing. It supports regular flooded, AGM flat plate, AGM spiral, GEL, and EFB batteries. Choose BT960 if lithium battery testing is required.
What Battery Types Can BT880 Test?
BT880 supports regular flooded, AGM flat plate, AGM spiral, GEL, and EFB enhanced flooded batteries. Select the correct battery type on the tester before running a battery test.
Does BT880 Support 12V And 24V Batteries?
BT880 supports 12 V and 24 V rated-voltage testing over an 8–30 V DC operating range. Follow the vehicle procedure and test individual 12 V batteries separately when required.
What Is The Leakage Current Detection Range?
The listed total-current observation range is 15 mA to 5 A. The waveform can support follow-up, while circuit location requires a separate sleep-state and fuse/circuit isolation procedure.
How Should I Connect BT880 For Leakage Current Monitoring?
After correctly connecting the power clamps to the battery terminals, disconnect the negative terminal according to the manual. Use the special leakage test clamp to connect to the vehicle negative bus, then enter the waveform function to monitor and record real-time leakage current.
Can BT880 Print Test Results?
Yes. BT880 has a built-in thermal printer. It does not require ink; replace the thermal paper roll when needed. Printed results can be used for work orders, customer records, and maintenance reports.
What Does The Data Review Function Do?
The data review function stores previous records and battery voltage values so users can view earlier results and compare battery status over time.
Why Does BT880 Have A Temperature Sensor?
The built-in sensor displays ambient temperature so the battery result can be reviewed with hot or cold operating context. Treat the temperature as context rather than assuming the tester automatically compensates the result.
Which Rating Standards Are Supported?
BT880 supports CCA, JIS, GB, SAE, MCA, CA, DIN, IEC, EN, and BCI rating standards. Choose the standard that matches the battery label before testing.
What Languages Does BT880 Support?
BT880 supports 18 languages: English, Spanish, Russian, Malay, Italian, Portuguese, French, German, Polish, Japanese, Korean, Vietnamese, Indonesian, Filipino, Turkish, Thai, Simplified Chinese, and Traditional Chinese.
What Is The Difference Between BT880 And BT960?
BT880 is suitable when you need thermal monitoring, leakage current monitoring, data printing, data records, software upgrade, 18 languages, and 12V/24V lead-acid battery testing. BT960 is the better choice if lithium battery testing is required.
What Accessories Are Included?
Package contents: BT880 main unit, retail box or carrying case, user manual, thermal paper, leakage-test clamp cable, battery clamp cable, and the listed accessories.
How Long Is The Warranty?
Main unit: 3-year warranty. Standard accessories: 1-year warranty. Warranty Policy.





