Battery, Starting and Charging Checks With Loaded-Voltage Observation
The BT460 tests 12 V and 24 V lead-acid starting batteries, the cranking and charging systems, and battery voltage under the vehicle’s own electrical loads. It is a tester only: it does not charge batteries or test lithium batteries.
- 12 V / 24 V Lead-Acid
- 30–2000 CCA
- Max Load Test
- Reverse Polarity Protection
Key Features
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Battery Health Test
Analyzes state of health, state of charge, internal resistance, voltage, cold cranking ability and aging to help decide whether to service or replace the battery.
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Cranking Test
Evaluates the starter through cranking voltage and current while you follow the on-screen start prompt.
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Charging System Test
Checks generator output, rectifier and diode behavior and charging voltage to flag overcharge or undercharge.
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Max Load Test
Shows battery voltage with the vehicle’s electrical appliances switched on. It uses the vehicle’s loads and is not a resistive high-current load test.
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Selectable Rating Standards
CCA 30–2000, IEC 30–2500, EN 30–3000, DIN 30–2500, JIS 26A17R–N135 and GB 30–300AH; select the standard on the battery label.
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Data Review
The Review menu shows saved or recent test results where the current software supports it.
Model Comparison
| BT460 | BT360 | BT760 | BT880 | BT960 | |
|---|---|---|---|---|---|
| Rated battery voltage | 12 V / 24 V | 12 V | 12 V / 24 V | 12 V / 24 V | 12 V / 24 V |
| Voltage test range | 8–30 V | 8–20 V | 8–30 V | 8–30 V | 0–80 V |
| Max load test | Yes | No | Yes | Yes | Yes |
| Data printing | No | No | Yes | Yes | Yes |
| Thermal and leakage monitoring | No | No | No | Yes | Yes |
| Lithium batteries | No | No | No | No | Yes |
| Screen size | 2.8 in | 2.4 in | 3.2 in | 3.2 in | 3.2 in |
What’s in the Box
- BT460 battery tester
- Red and black battery clamp cable
- User manual
- Retail box
How to Use
- Connect the clampsRed to positive, black to negative; wiggle the clamps to confirm a firm connection.
- Run the battery testSelect battery type, standard and rating from the battery label; results appear within a few seconds.
- Run the cranking testStart the engine when prompted.
- Run the charging testRaise engine speed to about 2500 rpm for 5 seconds when prompted, then press OK.
- Run the max load testSwitch on the vehicle’s electrical appliances, start the engine as instructed and press OK.
Rating selection, tests and troubleshooting: BT460 user manual (PDF).
Good to Know
Caution
- For lead-acid batteries only; the BT960 is the model for lithium batteries.
- A deeply discharged battery may need charging with separate equipment before the tester can give a reliable result.
- If the engine is running or voltage is too high at the wrong test stage, stop the engine and follow the on-screen prompt.
Care
- CCA, SOC and health values are algorithm-based screening indicators, not controlled amp-hour measurements; repeat unexpected results after checking terminal contact and charge.
- Do not disassemble or immerse the tester, or bend and over-stretch the cables.
- New and old versions ship during transition; appearance, button layout and packaging may differ.
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