DC 5V Dual Channel 18650 Battery Capacity Tester

Test, analyze, and monitor your 18650 lithium batteries with precision using this DC 5V Dual Channel 18650 Battery Capacity Tester. Designed for electronics enthusiasts, battery technicians, and DIY hobbyists, this dual-channel tester lets you simultaneously test two 18650 cells independently — giving you accurate capacity readings, real-time voltage and current curves, and historical data all on one device.

Made in Mainland China.

Key Features

• Dual Independent Channels: Test two 18650 batteries simultaneously. Each channel operates independently without interference, so you get accurate, isolated results for each cell.
• Power-Off Memory: Automatically saves your most recent measurement data when powered off — no need to start over after an interruption.
• Audible & Visual Over-Temperature Warning: Built-in safety alert system notifies you with sound and light if temperatures exceed safe thresholds, keeping your testing sessions safe.
• Screen-Off Timer: Configurable screen timeout helps conserve energy during extended testing sessions.
• Voltage & Current Curve Display: Visualize the full charge and discharge process in real time with detailed graphical curves for deeper battery insights.
• Multiple Display Modes: Switch between the main interface, voltage/current curve graphs, and historical data views with ease.
• USB 5V DC Powered: Conveniently powered via standard 5V DC USB — no special power supply needed.
• Compact & Durable Build: Constructed from a combination of plastic and metal for a sturdy, long-lasting tester that's easy to handle.

Specifications

• Channels: 2 (Dual Channel)
• Compatible Battery: 18650 Lithium Battery
• Input Voltage: 5V DC (USB)
• Voltage Range: USB (5–20V DC)
• Color: Black
• Material: Plastic + Metal
• PCB Included: Yes
• Batteries Included: No
• Charger Included: No

What's in the Box

• 1 × Dual Channel 18650 Battery Capacity Tester

Note: Only the above package content is included. Other products are not included. Slight color variation may occur due to lighting and display differences. Measurement tolerance is ±1–3%.

For more information on battery safety and proper handling of lithium-ion batteries, visit the U.S. Consumer Product Safety Commission (CPSC) Lithium Battery Safety page.

Frequently Asked Questions

Q: What type of batteries can this dual channel battery capacity tester measure?

A: This tester is specifically designed for 18650 lithium-ion batteries. It supports two cells simultaneously via its dual independent channels, making it ideal for testing, sorting, and analyzing 18650 battery capacity and performance.

Q: Does this battery capacity tester come with 18650 batteries or a charger?

A: No, this tester does not include 18650 batteries or a charger. It is powered via a standard 5V DC USB connection. Batteries to be tested must be supplied separately.

Q: Can I test both channels at the same time without one affecting the other?

A: Yes. Each channel on this dual channel 18650 tester is fully independent. Testing on one channel does not interfere with the readings or operation of the other channel, ensuring accurate and reliable results for both cells simultaneously.

Q: What data can I view on the tester's display?

A: The tester features multiple display modes including a main interface, real-time voltage and current curve graphs showing the charge/discharge process, and a historical data log. This gives you a comprehensive view of each battery's performance over time.

Q: How is the power-off memory feature useful?

A: The power-off memory function automatically saves the most recent measurement data when the device loses power or is turned off. This means your test progress isn't lost due to accidental disconnection, making longer capacity tests more reliable and worry-free.