Tester miernik pojemności rezystancji ładowarka ogniw 4x18650 USB-C + ekran

18650 Cell Tester and Charger with USB-C Port

An advanced module that enables accurate measurement of the capacity and internal resistance of 18650 batteries. The device supports up to four cells and features a charging function via an integrated USB-C port. Active cooling via a built-in fan ensures stable operation during the discharge process.

Key Technical Features

• Power supply: via 5V USB port
• Capacity measurement range: 0–99,999 mAh
• Energy measurement range: 0–99,999 mWh
• Discharge voltage: adjustable from 2.5 to 3.5 V
• Cell charging voltage: up to 4.2V
• Charging current: up to 1 A
• Discharge current: up to approximately 0.75 A
• Dimensions of supported cells: 18.5 mm x 66 mm
• Module dimensions: 147 mm x 102 mm x 34 mm

Three operating modes

1. AUTO mode – charges the cell, then discharges it while measuring capacity, recharges it, and ends the program.
2. DISCHARGE mode – discharges the cell while measuring capacity, then ends the program.
3. CHARGING mode – charging the cell to full capacity and ending the program.

Button functions

• M button – select the parameters you want to change.
• S button – select the mode (charge, discharge, automatic).
• R/S button – start/stop.
• CHN button—select a battery (CHN1–CHN4).

Benefits

• Comprehensive diagnostics—the ability to simultaneously check capacity and internal resistance.
• Convenient power supply—the widely used USB-C port makes it easy to connect to standard power adapters.
• Operational safety—the built-in fan effectively cools the resistors during discharge.
• Automated measurements—set up to 9 repetitions of the test cycle.
• Multitasking—support for up to four cells at once speeds up the verification process.

Example Applications

• Verification of the actual capacity of used 18650 cells.
• Selection and pairing of batteries for building power packs.
• Testing internal resistance to reject worn-out cells.
• Safe charging of individual 18650 batteries.

Important Additional Information

The kit does not include cells.

To change the interface language to (English/Chinese), disconnect the power supply, hold down the M button, and then reconnect the power supply.