Mini Power Display Indicator 1S-4S Lithium Battery Capacity Tester

Discover the Mini Power Display Indicator 1S-4S Lithium Battery Capacity Tester — a standout decor pick featuring compact design for dependable, everyday performance.

Specifications

Brand Name: Aideepen

DIY Supplies: Electrical

Data Record: No

Electronic: No

Material: Plastic

Semi-finishedproduct: No

Product Features

1. Supports 1S–4S lithium battery series connections, offering strong compatibility

2. Accurately displays battery percentage, providing an intuitive and easy-to-read display

3. Ultra-compact design, easily integrated into compact devices

4. Low-power operation, extending the device’s standby time

5. Manual series configuration switching for convenient use

With button/Without button

Product Specifications

Maximum Withstand Voltage: 36V ±10

Voltage Measurement Range: 3–17.29V

Battery Capacity: Unlimited

Battery Level Display: 0%–100%

Measurement Accuracy: ±1%

Average Operating Current: 7mA ±0.3mA

Refresh Rate: 0.3 seconds per cycle

Output Control: None

Reverse Polarity Protection: None (Positive and negative terminals must not be reversed; doing so will damage the module)

Compatible Battery Range: The module is compatible with all lithium battery packs consisting of 1 to 4 cells in series or parallel configuration with a rated voltage of 3.7V (full charge voltage 4.2V); this includes 14500, 18650, 21700, polymer lithium batteries, and other batteries of any capacity or size

Model with Smart Button

Features a smart button. Upon power-up, the device first detects the number of battery cells; at this point, it defaults to Mode 0. The display lights up after approximately 1 second and shows the current battery percentage. A short press (less than 3 seconds) of the smart button serves as the power on/off function, while a long press (3 seconds or longer) switches modes, allowing you to switch to Mode 1. After switching to Mode 1, the display turns off by default. A short press (less than 3 seconds) of the smart button immediately turns on the display, and the value rises from 0% to the normal charge level within approximately 1 second (due to the button’s dual function, the filter capacitor must charge after activation). The display then automatically turns off after a 3-second delay. A long press (>3 seconds) switches modes, returning to Mode 0, and the cycle repeats;

4.2V

Product Specifications

Product Specifications Maximum Withstand Voltage: 36V ±10

Voltage Measurement Range: 3–4.41V

Battery Capacity: Unlimited

Battery Level Display: 0%–100%

Measurement Accuracy: ±0.25%

Average Operating Current: 7mA ±0.3mA

Refresh Rate: 0.3 seconds per cycle

Output Control: None

Reverse Polarity Protection: None (Positive and negative terminals must not be reversed; doing so will damage the module)

Compatible Battery Range: The module is compatible with all single-cell lithium batteries or multi-cell lithium battery packs with a rated voltage of 3.7V (full charge voltage 4.2V); this includes 14500, 18650, 21700, polymer lithium batteries, and other batteries of any capacity or size. After powering on, the module displays the current battery charge percentage in real time

Precautions

1. Connect VCC to the battery’s positive terminal and GND to the battery’s negative terminal. Markings are present on both the front and back of the board. As shown in the wiring diagram, facing the battery meter, the pads are on the left; the top pad is positive, and the bottom pad is negative;

2. Ensure the power is off when connecting wires; otherwise, accidentally touching the pins on the back of the board may cause a short circuit and damage the module. After soldering, verify that the positive and negative terminals do not touch the pin pads on the back of the battery meter before powering on;

3. There is no reverse polarity protection; connecting the positive and negative terminals incorrectly will damage the module. It is recommended to verify the polarity before connecting the wires;

4. Not compatible with 3.2V lithium iron phosphate (LiFePO4) batteries or lead-acid batteries. During charging, the charger raises the battery voltage, causing the displayed charge level to be approximately 110% higher than the actual charge. The exact increase depends on the charging current and the battery’s internal resistance; this is a normal phenomenon!

Package Contents

Module *1

Options

• Color: 4.2V, With button, Without button

Frequently Asked Questions

Q: What is the Mini Power Display Indicator 1S-4S Lithium Battery Capacity?

A: The Mini Power Display Indicator 1S-4S Lithium Battery Capacity is a quality decor pick. Supports 1S–4S lithium battery series connections, offering strong compatibility 2.

Q: What is the Mini Power Display Indicator 1S-4S Lithium Battery Capacity made of?

A: The Mini Power Display Indicator 1S-4S Lithium Battery Capacity is made from Plastic Semi-finishedproduct.

Q: Why choose the Mini Power Display Indicator 1S-4S Lithium Battery Capacity?

A: The Mini Power Display Indicator 1S-4S Lithium Battery Capacity stands out in our decor range — Accurately displays battery percentage, providing an intuitive and easy-to-read display 3.