TK15 Battery Capacity Tester Coulometer DC 8–80V | Voltmeter
TK15 Battery Capacity Tester Coulometer DC 8–80V | Voltmeter
TK15 Professional Precision Battery Capacity Tester & Voltmeter
The TK15 Battery Capacity Tester (Coulometer) is a high-precision instrument designed to monitor the voltage, current, and remaining capacity of your battery pack in real time. Whether you're managing an e-bike battery, a balance car, a portable UPS, or a cleaning machine, the TK15 gives you instant, accurate visibility into your battery's state — so you're never caught off guard.
Compatible with lithium, lithium iron phosphate (LiFePO4), lead-acid, and nickel-metal hydride (NiMH) batteries operating between DC 8V and 80V, this coulometer is the ideal solution for DIY builders, technicians, and everyday users who need reliable battery data.
Made in Mainland China.
Key Features
- High-Precision Measurement: ±1.0% voltage and current acquisition accuracy for dependable readings every time.
- Multi-Chemistry Compatible: Works with lithium, LiFePO4, lead-acid, and NiMH battery packs (DC 8–80V operating range).
- Automatic Memory: Retains capacity data when power is disconnected — no need to reconfigure after a restart.
- Adjustable Thresholds: Customise empty and full voltage levels to match your specific battery pack.
- Auto-Backlight: Display illuminates automatically when in use; powers down to conserve energy during standby.
- Ultra-Low Power Draw: Only 8.0 mA operating consumption; drops to 0.5 mA on standby and just 50 µA in sleep mode.
- Wide Current Support: Compatible with 50A, 100A, and 350A shunt configurations.
- Fast Response Rate: Captures rapid changes in battery state for accurate real-time display.
What the Display Shows
- Residual battery capacity (Ah or mAh)
- Capacity percentage with totem-pole bar graph
- Battery voltage (DC)
- Battery current
- Power output
- Estimated remaining charge / discharge time
Technical Specifications
| Model | TK15 |
| Operating Voltage Range | DC 8–80V |
| Supported Current | 50A / 100A / 350A |
| Voltage Accuracy | ±1.0% |
| Current Accuracy | ±1.0% |
| Overall Dimensions | 66 × 40 × 10 mm |
| Display Area | 32 × 23 mm |
| Battery Capacity Setting Range | 0–590 Ah |
| Operating Temperature | 0–35°C |
| Working Power Consumption | 8.0 mA (Max 10.0 mA) |
| Standby Consumption | 0.5 mA (Max 0.8 mA) |
| Sleep Consumption | 50 µA (Max 60 µA) |
| Country of Origin | Mainland China |
What's in the Box
- 1 × TK15 Battery Capacity Tester / Coulometer
- 1 × 1 m Shielded Cable
- 1 × Current Shunt
- 1 × User Manual
Compatible Applications
E-bikes, balance scooters, portable cleaning machines, UPS systems, instruments, and any mobile or portable equipment powered by a supported battery chemistry.
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Frequently Asked Questions
Q: What battery types is the TK15 coulometer compatible with?
A: The TK15 battery capacity tester works with lithium-ion, lithium iron phosphate (LiFePO4), lead-acid, and nickel-metal hydride (NiMH) battery packs, provided their operating voltage falls within the DC 8–80V range.
Q: Will the TK15 lose its data if the battery is disconnected?
A: No. The TK15 features an automatic memory function that retains the last recorded capacity data even after a power interruption, so it resumes accurately when reconnected without needing to be reset.
Q: What current ratings does the TK15 support?
A: The TK15 supports 50A, 100A, and 350A configurations depending on which shunt (sampler) is used. The included standard shunt supports up to 50A continuous (100A max), while larger external shunts unlock higher current ranges.
Q: Is the TK15 suitable for e-bike battery monitoring?
A: Yes. The TK15 is an excellent choice for e-bike battery monitoring. It displays real-time voltage, current, remaining capacity (Ah/mAh), capacity percentage, and estimated ride time remaining — all essential data for e-bike users and builders.