The Battery Capacity Tester is a versatile device for single-channel internal resistance and capacity measurements. It supports charging functions and offers up to 9 charging and discharging cycles in automatic mode. This tester not only charges batteries but also measures their internal resistance and capacity. Additionally, it performs capacity division and cycling processes to optimize battery performance.

Features:
Digital Display: Features a 1.77-inch digital screen showing real-time voltage, current, power, accumulated capacity, energy, status indicators, operating mode, stop discharge voltage, number of cycles, battery internal resistance, and accumulated time.
Multifunctional Design: Capable of charging batteries, measuring internal resistance and capacity, performing capacity division, and running cycling processes.
Three Working Modes: Includes preset modes—Automatic, Charging, and Discharging. Simply select the desired mode, and the program runs automatically. The discharge current can be switched for user convenience.
Charging Function: Utilizes an external 5V power supply, delivering a maximum charging current of 1A through the charging chip. The charging process records capacity, energy, and charging time. (Note: Not suitable for charging LifePO4 batteries.)
Internal Resistance Test: This test employs the direct current two-wire method for testing battery internal resistance, providing high accuracy when the battery is fully charged.
Capacity Test: Conducts capacity testing through resistance discharge. It records cumulative capacity, energy, and time during the discharge process, reflecting the capacity measured from the start of discharge to the stopping point.
Battery Capacity Division and Cycling: Supports processes of charging, discharging, and recharging for capacity division and cycling. The stop discharge voltage must not be lower than 2.8V to ensure proper charging and program operation.
Data Reset Function: Automatically clears capacity, energy, and time data when switching off or changing modes.

Specifications:
Name: Battery Capacity Tester
Working Power Supply: DC 5V power supply or 18650 battery (not included)
Applicable Batteries: Batteries with a stop discharge voltage of 2.5V to 3.5V; suitable for batteries starting at 2.8V and fully charged at 4.2V
Power Supply Interface: Type-C interface (power supply cable not included; compatible with standard Type-C mobile phone cables)
Number of Channels: Single-channel charging and discharging measurement (right-hand battery slot only)
Internal Resistance Measurement: Supported, using the direct current two-wire method
Charging Function: Supported, with automatic cut-off when fully charged (not suitable for LifePO4 batteries)
Discharging Function: Supported, automatically stops when conditions are met; discharge current is not adjustable
Automatic Charging and Discharging: Supported; the battery is fully recharged at the end of automatic mode
Cycle Charging and Discharging: Supported; adjustable from 1 to 9 cycles (only in automatic mode)
Status Indication: Supported
Stop Discharge Voltage: Adjustable in 11 levels—from 2.5V to 3.5V in 0.1V increments
Discharge Current: Two-way resistor, maximum 1A current; not adjustable and does not support independent transformation
Charging Voltage: Controlled by a specialized battery charging chip; maximum charging current of 1A; fully charged voltage is 4.2V
Power Failure Memory: Saves only setting parameters; measurement data are not saved
Dimensions: 110 × 89 × 30 mm / 4.33 × 3.50 × 1.18 inches
Weight: 80 grams

Package contains:
1 x 18650 Capacity Tester Module