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ZB2L3 18650 Lithium Battery Capacity Tester – mAh Discharge Meter
ZB2L3 18650 lithium battery tester is a high-accuracy constant-current discharge module designed to
measure the true mAh capacity of Li-ion cells. It provides real-time voltage, discharge current, and total
capacity on a digital display, making it ideal for battery testing, pack building, and cell grading.
🔧 Key Features
- 🔋 Accurate mAh Capacity Measurement using constant-current discharge
- 📺 Clear 7-segment LED display showing voltage, mAh and discharge status
- ⚡ Supports discharge currents of 1A or 2A (based on resistor selection)
- 🔌 Works with all 1S lithium-ion batteries (3.7V nominal)
- 🔧 Screw terminals for easy battery connection
- 🧪 Perfect for cell grading, pack refurbishing and performance analysis
📐 Technical Specifications
| Model | ZB2L3 |
| Input Voltage | 4V – 15V |
| Supported Batteries | 1S & 2S Li-ion / 18650 / 21700 / 26650 |
| Discharge Current | 1A or 2A (depends on resistor) |
| Display Type | 7-segment LED digital display |
| Measurement Output | mAh capacity, voltage, discharge time |
| Accuracy | High accuracy digital calculation |
| Load Resistors | Included (cement resistors) |
| Operating Mode | Constant-current discharge |
💡 Applications
- 🔋 DIY 18650 battery pack builders
- 🛠 Li-ion cell grading and matching
- 🔄 Battery refurbishing (laptops, e-bikes, power tools)
- 🧪 Testing old or unknown cells before reuse
- 🔎 Checking real battery performance vs printed rating
📦 Package Includes
- 1 × ZB2L3 18650 Lithium Battery Tester
- 2 × Power Load Resistors
- Mounting screws and brass standoffs
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