Test the Battery, Track Key-Off Drain and Print the Result
The AUTOOL BT880 checks 12 V and 24 V lead-acid batteries, cranking and charging, monitors total key-off current through a dedicated leakage clamp, and prints results for the work order. It does not test lithium batteries and does not charge.
- 12 V / 24 V Lead-Acid
- 15 mA–5 A Leakage Monitor
- V/A Waveforms
- Built-In Thermal Printer
- 18 Languages
Key Features
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Battery Health Test
Checks voltage, CCA, resistance, SOC, SOH and overall condition based on the selected battery type and rating standard.
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Cranking and Charging Tests
Evaluate starting performance and charging status to help diagnose common vehicle electrical faults.
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Maximum Load Test
Observes system voltage with the engine running and electrical loads switched on. It is not a traditional high-current resistive load test.
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Leakage Current Monitoring
The negative-side leakage clamp observes total current and records its waveform, so you can decide when circuit isolation is needed.
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Voltage and Current Monitor
The V/A monitor shows voltage and current waveforms to reveal fluctuation during inspection.
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Ambient Temperature Sensor
Displays ambient temperature as context for hot or cold results; the tester does not automatically compensate the result.
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Data Review and Printing
Stores previous test data and battery voltage values for comparison over time, and prints results on thermal paper with no ink required.
BT760 vs BT880 vs BT960
| BT760 | BT880 | BT960 | |
|---|---|---|---|
| Leakage current monitoring | No | Yes | Yes |
| Thermal monitor | No | Yes | Yes |
| Lithium batteries | No | No | Yes |
| Voltage test range | 8–30 V | 8–30 V | 0–80 V |
| Software upgrade | No | Yes | Yes |
| Languages | 14 | 18 | 14 |
What’s in the Box
- BT880 battery and system tester with built-in thermal printer
- Red and black battery clamp cable
- Yellow leakage current test clamp cable
- Thermal paper roll
- User manual
- Retail box or carrying case
How to Use
- Select the test modeChoose battery, cranking, charging system, maximum load, V/A monitor, leakage, data review or printing.
- Connect the clampsAttach the red and black clamps by polarity; reverse-polarity protection does not replace a correct connection.
- Choose type and standardSelect the battery type and the rating standard and value printed on the battery label.
- Monitor leakage when neededDisconnect the negative terminal as instructed, fit the leakage clamp to the vehicle negative bus, let the vehicle reach its sleep state and watch the current waveform.
- Review or printCheck stored records or print the results for the work order or customer.
Setup, testing and firmware upgrade: BT880 user manual (PDF).
Good to Know
Caution
- Lead-acid batteries only. Choose the BT960 if lithium battery testing is required.
- The BT880 does not charge batteries; use separate charging equipment when charging is needed.
- A leakage reading shows total current only. Finding the responsible circuit requires a separate sleep-state and fuse/circuit isolation procedure.
Care
- Treat CCA, SOC and health values as algorithm-based indicators; repeat unexpected results after checking terminal contact and charge state.
- Test individual 12 V batteries separately when the vehicle procedure requires it.
- Replace the thermal paper roll when printing becomes unclear or the paper runs out.
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