Looking for 18650 Li Ion Battery? 18650 Li-ion Lithium Battery Capacity Tester is available at Zbotic with fast shipping across India.
18650 Li-ion Lithium Battery Capacity Tester
This board is a lithium-ion battery capacity tester that measures the capacity of a fully charged battery connected to its inputs. It has a 4-digit seven segment display that shows the battery capacity, current and voltage. It also has 1W resistors that discharge the battery at a constant current output.
Instruction:
2. Connect the positive input of the tester to the positive terminal of the battery, and the negative input to the negative terminal. Do not reverse the polarity (this may damage the circuit with the load)! Connect the load to the positive and negative outputs of the tester. Use a micro USB power supply (not a desktop or laptop USB) to power the tester, then read the battery voltage.
3. To start the test automatically, just press the “OK” button once. The tester will determine the appropriate cut-off voltage based on the battery’s full charge voltage, and will flash three times after the test. To set the cut-off voltage manually, press “+” or “-” buttons to adjust the voltage value when the battery voltage is displayed. The voltage value starts with P and has a resolution of 0.1V. After setting the value, press “OK” to start the test.
4. When the test starts, the tester will turn on the electronic switch of the load. The tester will display the released capacity (Ah), the discharge current (A), and the battery voltage (V) alternately during the test. When the battery voltage reaches the cut-off voltage, the tester will turn off the load switch and keep displaying the capacity (Ah) and other data. The corresponding indicator will flash quickly to indicate that this is the actual capacity of the battery after discharging. Press “OK” to stop flashing and stabilize the data display, then press “OK” again to return to the power-on state. You can replace the battery and test another one.
Features
- Support current through: maximum 3.000A resolution 0.001A
- Maximum voltage measurement error: 1% + 0.02V
- Maximum current measurement error: 1.2%+-0.002A
- The highest battery capacity range: 9999Ah (1Ah=1000mAh). The larger value is switched by the decimal point shift. When it is lower than 10Ah, it is displayed as X.XXX, and when it is above 10Ah, it is displayed as XX.XX, and so on.
- Board size: 50mmX37mm
- Finished product size: 50mmX37mmX17mm (length X width X height maximum position size, including copper foot height)
- Board and accessories weight: single-board 28g (including copper column), two 5W ceramic resistor 9g, 50W resistance about 27g (including line)
Specifications:
| Power supply voltage (VDC) | 4.5 ~ 6 |
|---|---|
| Discharge voltage | 1 ~ 15 VDC 0.01V resolution |
| Working current (mA) | less than 70 |
| Maximum voltage measurement error | 1% + 0.02V |
| Maximum current measurement error | 1.5% ± 0.008A |
| Length (mm) | 50 |
| Width (mm) | 37 |
| Height (mm) | 16.5 |
| Weight (gm) | 20 |
Package Includes
- 1 x 18650 Li-ion Lithium Battery Capacity Tester
- 2 x Load Resister
18650 Li-ion Lithium Battery Capacity Tester Overview
The 18650 Li-ion Lithium Battery Capacity Tester is a compact board designed to measure the actual capacity, voltage, and discharge current of 18650 lithium-ion cells. By discharging a fully charged battery through internal resistors at a constant current, it accurately calculates capacity and displays real-time data on a 4-digit seven-segment display.
Key Features of 18650 Li-ion Lithium Battery Capacity Tester
- Voltage measurement range from 1.00 V to 15.00 V with 0.01 V resolution
- Discharge current up to 3.000 A adjustable in 0.001 A steps
- Termination voltage selectable between 0.5 V and 11.0 V for safe cutoff
- Low operating current (under 70 mA) minimizes tester self-consumption
- Maximum voltage error of 1% + 0.02 V and current error of 1.5% + 0.008 A
- Clear 4-digit seven-segment display shows capacity (mAh), voltage, and current
- Genuine product with fast shipping across India from Zbotic
Applications and Use Cases
- Verifying actual capacity of new or second-hand 18650 cells before assembly
- Routine health checks on power tool and e-bike battery packs
- Quality control in battery pack manufacturing or refurbishment
- Educational and lab experiments involving lithium-ion discharge curves
- Hobbyist testing for RC model batteries and custom battery builds
How to Use 18650 Li-ion Lithium Battery Capacity Tester
After fully charging your 18650 cell, connect its positive terminal to the tester’s “+” input and negative terminal to the “–” input, ensuring correct polarity. Set your desired discharge current and cutoff voltage via the onboard buttons, then start the test. The tester will discharge at a constant current, display voltage, current, and accumulated capacity, and automatically stop when the cell reaches the selected termination voltage.
Why Buy from Zbotic?
- Genuine Products: All items sourced from authorized distributors
- Fast Shipping: Orders ship within 24 hours with tracking (non backordered products)
- Free Shipping: Free delivery on qualifying orders
- COD Available: Cash on Delivery, UPI, cards, net banking
- Technical Support: Expert help for setup and troubleshooting
- Easy Returns: Hassle-free replacement for defective products
Frequently Asked Questions
What voltage and current ranges can this tester handle?
The tester measures battery voltage from 1.00 V to 15.00 V (0.01 V resolution) and can discharge at up to 3.000 A (0.001 A resolution). It’s optimized for single 18650 Li-ion cells.
How accurate are the capacity and voltage readings?
Voltage readings have a maximum error of 1% + 0.02 V, while current measurements stay within 1.5% + 0.008 A. Capacity is calculated based on precise voltage and current data during a controlled discharge.
What happens when the battery reaches the cutoff voltage?
The tester monitors cell voltage in real time and automatically stops the discharge once the preset termination voltage (between 0.5 V and 11.0 V) is reached, protecting the battery from over-discharge.
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Read More →Technical Specifications
| SKU | AI0683 |
|---|---|
| Weight | 0.039738 kg |
| Availability | Out of Stock |
Applications & Use Cases
The 18650 Li-ion Lithium Battery Capacity Tester is a versatile lipo voltage checker used across a wide range of applications including electronics projects, DIY builds, prototyping, and educational experiments.
Common use cases:
- Integrating into a custom electronics project
- Learning and experimenting with circuits
- Replacing or upgrading components in existing setups
This product is ideal for electronics enthusiasts, engineers, and students.
Technical Tip: Always verify voltage and current requirements before connecting to your circuit. Check datasheets for detailed specifications and pin configurations.
Shipping & Delivery
- Free shipping on orders above ₹999 across India
- Dispatched within 1-3 business days
- Expected delivery: 3-7 business days depending on location
- Secure packaging to ensure safe transit of electronic components
Deepika Banerjee (verified owner) –
Excellent 18650 Li-ion Lithium Battery Capacity Tester! Output is stable and reliable. Perfect for my electronics project.
Zara Hegde –
Bought multiple units of this 18650 Li-ion Lithium Battery Capacity Tester. All consistent quality. Zbotic is reliable.
Devansh Panchal –
Great 18650 Li-ion Lithium Battery Capacity Tester. Voltage is rock solid under varying loads. Highly recommended.
Divyansh Panchal (verified owner) –
This 18650 Li-ion Lithium Battery Capacity Tester performs flawlessly. Voltage regulation is precise and consistent.
Krishna Srivastava (verified owner) –
This 18650 Li-ion Lithium Battery Capacity Tester is reliable and efficient. Running my IoT setup 24/7 with no issues.
Kritika Nair (verified owner) –
This 18650 Li-ion Lithium Battery Capacity Tester performs flawlessly. Voltage regulation is precise and consistent.
Meera Negi (verified owner) –
Nice 18650 Li-ion Lithium Battery Capacity Tester. Works as expected for my power needs. Good efficiency.
Dhruv Dhillon (verified owner) –
Decent 18650 Li-ion Lithium Battery Capacity Tester. Voltage output is accurate. Compact form factor is a plus.
Divyansh Rawat –
Okay 18650 Li-ion Lithium Battery Capacity Tester. Output is slightly off from specified but within usable range.
Jayesh Sen (verified owner) –
This 18650 Li-ion Lithium Battery Capacity Tester performs flawlessly. Voltage regulation is precise and consistent.
Ananya Grewal –
Decent 18650 Li-ion Lithium Battery Capacity Tester. Voltage output is accurate. Compact form factor is a plus.
Sudeep (verified owner) –
Genuine product. Working good. Others websites giving only one resistor.
Tanvi Srivastava (verified owner) –
Superb 18650 Li-ion Lithium Battery Capacity Tester! Efficiency is high and it runs cool even under load.
Lakshmi Dhawan (verified owner) –
This 18650 Li-ion Lithium Battery Capacity Tester is reliable and efficient. Running my IoT setup 24/7 with no issues.
Sudhir Kalambe (verified owner) –
Sonali Banerjee (verified owner) –
Great quality 18650 Li-ion Lithium Battery Capacity Tester. Powering my entire project board with this. Very reliable.
Piyush Kulkarni –
Good 18650 Li-ion Lithium Battery Capacity Tester. Output is stable. Gets slightly warm under full load but nothing concerning.
Akshat Menon (verified owner) –
Excellent 18650 Li-ion Lithium Battery Capacity Tester! Output is stable and reliable. Perfect for my electronics project.
Ashwin Mishra (verified owner) –
Superb 18650 Li-ion Lithium Battery Capacity Tester! Efficiency is high and it runs cool even under load.