he HK39B is a dedicated digital battery tester designed to provide more useful battery-condition checks than an unloaded voltage reading alone. Each selectable battery position applies the load current specified for that battery type, allowing the measured voltage to be compared with the corresponding minimum “good” indication voltage.
Its dedicated ranges cover common 1.5 V button cells, AAA/N cells, AA/C/D cells, 3 V lithium batteries and 6 V, 9 V, 12 V, 15 V and 22.5 V batteries. This range makes the HK39B suitable for maintenance departments, repair benches, retail battery checks, household equipment servicing and inventory inspection.
The 1,999-count display is supported by an LCD backlight and built-in flashlight for use in storage rooms, workshops or poorly lit equipment areas. Data hold keeps a result visible after testing, while automatic power-off helps conserve the two AAA batteries that power the instrument. At 119 × 65 × 30 mm and 130 g, the HK39B is compact enough for a service bag or workbench drawer.
Key Features
- Loaded battery testing: Applies a specified load current instead of relying only on open-circuit voltage.
- Multiple battery selections: Covers designated battery voltages from 1.5 V to 22.5 V.
- Battery-specific evaluation thresholds: Provides a minimum good-indication voltage for every listed test position.
- Separate 1.5 V load profiles: Uses different load currents for button cells, AAA/N cells and AA/C/D cells.
- 1,999-count digital display: Presents test voltage in a clear numerical format.
- Manual rotary selection: Allows the user to select the matching battery type directly.
- Data hold: Retains the displayed result for easier reading and documentation.
- LCD backlight: Improves display visibility in low-light locations.
- Built-in flashlight: Helps illuminate batteries, terminals and work areas.
- Automatic power-off: Reduces unnecessary drain on the tester’s batteries.
- Portable housing: Weighs 130 g and measures only 119 × 65 × 30 mm.
Battery Test Specifications
| Battery selection | Test load current | Minimum voltage for “good” indication |
|---|---|---|
| 1.5 V button cell | 1 mA | 1.125 V |
| 1.5 V AAA / N cell | 50 mA | 1.125 V |
| 1.5 V AA / C / D cell | 150 mA | 1.125 V |
| 3 V lithium battery | 100 mA | 2.25 V |
| 6 V battery | 10 mA | 4.5 V |
| 9 V battery | 10 mA | 6.75 V |
| 12 V battery | 10 mA | 9.00 V |
| 15 V battery | 10 mA | 11.25 V |
| 22.5 V battery | 10 mA | 16.8 V |
General Specifications
| Category | Specification |
|---|---|
| Display count | 1,999 |
| Flashlight | Yes |
| LCD backlight | Yes |
| Data hold | Yes |
| Auto power-off | Yes |
| Range selection | Manual |
| Tester battery | 2 × 1.5 V AAA |
| Display area | 42.5 × 26 mm |
| Product size | 119 × 65 × 30 mm |
| Product weight | 130 g |
| Carton size | 47 × 31.5 × 34.7 cm |
| Quantity per carton | 60 pcs |
| Net / gross weight | 17.5 / 18.5 kg per carton |
Select only the test position that matches the battery being checked. Battery chemistry, temperature, age and equipment requirements can affect whether a battery remains suitable for a particular application. Follow the official product manual and the battery manufacturer’s handling instructions.
Typical Applications
Maintenance Battery Screening
Check batteries removed from meters, detectors, portable instruments, control devices and other equipment before replacement or reuse.
Repair Shops and Service Benches
Evaluate common batteries under a defined load while diagnosing equipment that shows intermittent operation, low-power warnings or startup problems.
Battery Retail and Customer Support
Provide a quick digital condition check for compatible battery formats brought in by customers.
Inventory and Storeroom Inspection
Screen stored batteries before issuing them to technicians or installing them in important equipment.
Household and Workshop Use
Check loose batteries from toys, flashlights, remote controls, alarms and other portable devices instead of discarding them based only on age.
HK39B or an HK39 Digital Multimeter?
Choose the HK39B when the main requirement is battery-specific loaded testing across several voltage formats. If you also need AC/DC voltage, resistance, continuity, diode and NCV functions, compare the HK39A TRMS pocket digital multimeter with 1.5 V and 9 V battery testing. For a smart auto-range workflow with general electrical measurements and basic 1.5 V / 9 V battery checks, see the HK39E smart pocket auto-range digital multimeter.
Request HK39B Product Information
Contact us for current pricing, availability, OEM or private-label requirements, packaging details and complete HK39B operating documentation.
