Product Overview
Introducing our cutting-edge tester, meticulously engineered to deliver precise measurements of internal resistance and voltage for a wide range of batteries. Seamlessly save your results for effortless record-keeping.
Offering an impressive range, our device tests from 0 to 100V and 1µΩ to 200Ω, covering a broad spectrum of battery types.
Versatile and reliable, this tester is perfect for evaluating the resistance of disposable batteries, diverse battery types, and even non-battery materials, showcasing its multifunctional prowess.
Engineered for safety, our product features robust short circuit protection, overcurrent safeguards, and secure reverse connection handling, alongside precision in both positive and negative voltage measurement.
Equipped with a high-capacity lithium battery, this device ensures extended operational endurance, allowing you to test with confidence over prolonged periods.
AUTO Range:
Intelligently adapts the range based on the internal resistance
of the object under measurement, optimizing accuracy.
Automatically transitions to the optimal
200Ω Measurement Range: 20Ω~200Ω, providing flexibility for varied assessments.
2Ω Measurement Range: 200mΩ~2Ω, tailored for precise measurements in smaller ranges.
200mΩ Measurement Range: 20mΩ~200mΩ, ensuring fine-tuned accuracy for delicate evaluations.
20mΩ Measurement Range: 1µΩ~20mΩ, offering unparalleled precision for sensitive testing.
Voltage Range Switching:
The default setting is AUTO range. Effortlessly toggle the voltage range
in the test interface with a simple press to manually select the desired voltage range for your specific needs.
| Internal Resistance Error Rate |
±0.5% rdg ±10 dgt |
| Voltage Value Error Rate |
±0.1% rdg ±10 dgt |
| Resistance Test Range |
1µΩ~200Ω |
| Voltage Test Range |
0V~100V |
| Test Result Storage |
160 Groups |
| Lithium Battery Capacity |
1450mAh |
| Charging Voltage |
5V |
| Charging Interface |
Type-C |
| Charging Time |
About 3 Hours |
| Auto Shutdown |
No Operation Within 10 Minutes |
| Working Temperature |
-10°C~60°C (14ºF~140ºF) |
| Storage Temperature |
-20ºC~80ºC (-4ºF~176ºF) |
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1. Does the tester come with a charger?
A: The tester is designed to be charged with a 5V power source and comes equipped with a Type-C charging cable. While a charger is not included, you can conveniently use a standard mobile phone charger.
2. Can I measure AC voltage?
A: The tester is not designed to measure AC voltage. Please avoid inputting AC voltage or DC voltage higher than 100V to ensure safe operation.
3. Does the tested battery need to be fully charged before retesting?
A: For most batteries, whether fully charged or not, the internal resistance test results remain consistent as the change in resistance is minimal. However, for a small number of battery types, a substantial power loss may affect the accuracy of the test results. In such cases, it is recommended to recharge the battery before testing.
4. Is the test result bouncing or unstable?
A: If the test results are unstable or show fluctuations, it may be due to poor contact between the test clamp and the battery, instability of the battery, the presence of an oxide layer on the electrode, or interference from a strong magnetic field nearby.
5. Can you measure large-capacity batteries?
A: Yes, the tester can measure large-capacity batteries. However, note that the internal resistance of such batteries is usually very small. Often, the resistance of the terminal connection line is higher than the battery's own resistance. Ensure that the clip is placed correctly, preferably on the original battery terminal, and maintain good contact during the test.
6. Can I test batteries without any markings?
A: This versatile tester can evaluate any type of battery, including both rechargeable and non-rechargeable varieties.
7. Why does testing the internal resistance determine whether the battery is good or bad?
A: Over time, as a battery is used, its capacity diminishes and its internal resistance increases-a natural physical phenomenon. A higher internal resistance indicates a reduced ability for current to pass through, which signifies lower battery performance. Hence, monitoring internal resistance is a reliable method to assess battery quality.
8. What is the normal internal resistance for an 18650 battery?
A: Ideally, the internal resistance should be around 20mΩ. Generally, it is about 30mΩ, and anything over 50mΩ indicates a poorer quality.
9. How much battery capacity can I test?
A: This tester is capable of testing any battery capacity, as long as the internal resistance lies within the range of 0-200Ω and the voltage is below 100V.
10. Can I test the internal resistance of a battery online? Can I test the UPS power supply?
A: Yes, in most scenarios, you can perform online testing without disconnecting the battery. This is especially applicable for UPS batteries under maintenance, which can be tested continuously.
11. What should I do if the device crashes?
A: Although no crashes have been reported, we have included a reset function. When you insert the charging cable to charge the tester, it will automatically reset itself.
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