4S 20V 5A Buck-Boost Module Charge/Discharge Integrated Bidirectional Fast Charging High Power Output Lithium Battery Module

2026-04-17T01:23:22-07:00

Price: 12.42 - 14.78 (3 variants)

Features
1. Robust 20V/5A output capability meets high-speed charging and discharging demands, enhancing operational efficiency
2. Built-in intelligent buck-boost circuitry supports diverse voltage input/output scenarios, compatible with multiple devices
3. Bidirectional lithium battery charging/discharging suitable for power banks, energy storage systems, and similar applications
4. Intelligently identifies device requirements for safe and efficient current/voltage matching
5. Precisely matches battery operating voltage range to ensure charging/discharging safety and battery longevity

Parameter
Type-C Port: PD100W 20V5A
USB Ports: SCP22.5W 4.5V5A, 18W/20W 9V2A
Battery Percentage Display
Current/Voltage Display

Precautions:
1. Never solder while energized. When soldering the main board's + and - wires, ensure they are de-energized to prevent 99.99% of accidents.
2. The main board only has + and -. Soldering while energized risks burns from hand tremors. Always disconnect power before soldering, connecting the main board's + and - first. The battery pack's negative terminal must be soldered last! The motherboard's two wires cannot balance the battery; the balancing protection function resides on the lithium battery protection board.
3. The first power-on may not display the battery level accurately; it will recover after a few cycles.
4. The default capacity is 500mAh per cell. Significant variations may cause inaccurate battery level display, but this does not affect other functions. There is no need to worry about overcharging or over-discharging.

Package include
Module*1

Features
1. 20V/5A powerful output supports high-speed charging and discharging for enhanced efficiency
2. Intelligent buck-boost circuitry ensures compatibility across multiple voltage scenarios and broad adaptability
3. Bidirectional charging/discharging for lithium batteries, suitable for power banks and energy storage systems
4. Intelligent device recognition automatically matches current and voltage for safe, efficient operation
5. Precisely matches battery voltage range to ensure safety and extend lifespan

Parameter
Type-C1 Input: 5V-3A, 9V-3A, 12V-3A, 15V-3A
Type-C2 Input: 5V-3A, 9V-3A, 12V-3A, 15V-3A, 20V-3.25A
Type-C1 Output: 5V-3A, 9V-3A, 12V-3A, 15V-3A, 20V-5A
Type-C2 Output: 5V-3A, 9V-3A, 12V-3A, 15V-3A, 20V-3.25A
USBA1 Output: 5V-3A, 9V-2A, 12V-1.5A (22.5W)
USBA2 Output: 5V-3A, 9V-2A, 12V-1.5A (22.5W)
Real-time digital display of battery level, voltage, and current

Frequently Asked Questions
1. Protection board wiring: For a 4S battery pack, starting from the negative terminal, the first positive terminal is B1 (4.2V for LiFePO4, 3.6V for LiFePO4). Subsequent terminals are B2 (8.4V), B3 (12.6V), and B+ (positive terminal at 16.8V). Connect the protection board's P+ and P- to the main board's positive terminal.
2. If the battery has charge but fails to power on after connection, first activate it by charging via the C port. All batteries require activation regardless of initial charge level.
3. After charging activation, the display may show 0 or 100%. Initial power-up may not accurately reflect charge level; normal display resumes after one charge/discharge cycle.
4. During use, charging stops at 80% or discharging halts at 20% due to voltage inconsistency. In severe cases, a fully charged battery may show 4.2V while others drop below 3V, rendering the entire system unusable.

Important Notes
1. Solder with power disconnected. Connect the main board's + and - terminals first; solder the battery pack's negative terminal last.
2. The main board's two wires cannot balance the batteries. The balancing protection function resides on the protection board. An additional lithium battery protection board can be added.

Package include
Module*1