Fast-Charging Version Removable 4-Cell 18650 Battery Case Compact Power Bank Housing Kit, Batteries Not Included(Blue)

1. USB 1+2 Output: 5V/3A, 9V/2.5A, 12V/1.87A (only 5V output when multiple ports are in use simultaneously)
2. IN Input (micro): 5V/3A, 9V/2A
3. Type-C Output: 5V/3A, 9V/2.22A, 12V/1.67A (output available only when PD protocol is supported)
4. Type-C Input: 5V/3A, 9V/2A, 12V/1.5A (supports 5V charging and discharging simultaneously)
5. QC: 18W; PD: 20W; SCP: 22.5W
6. Battery Type: 4 x 3.7V 18650 batteries (flat-top, no protection board, internal resistance below 50 mΩ, 1C discharge rate; each cell’s voltage must be between 3.3–4.2V). Do not use pointed-top batteries. Modifications or the use of other non-compliant batteries are not supported!
7. Valid Voltage Range: 3.3V–4.15V (note: the spring causes a voltage drop)
8. Battery Level Indicator: 4-level LED battery level indicator, calculated based on voltage. Please use high-performance, voltage-stable batteries. If the batteries are of poor quality, excessive voltage drop may occur, causing the LED indicator to drain quickly and resulting in the output remaining at the first or second battery level. The mainboard automatically shuts down when not in use
9. Charging Specifications: Supports 18W charging; current is automatically regulated at the battery end, with a maximum charging current of 5A
10. Discharge Specifications: Output current capabilities: 5V/3A, 9V/2.22A, 12V/1.67A
11. Multiple Protections, High Reliability: Built-in input overvoltage and undervoltage protection; integrated output overcurrent, overvoltage, and short-circuit protection; Built-in battery overcharge, over-discharge, and overcurrent protection; built-in IC over-temperature protection
12. Dimensions: Approximately 10.3 x 8 x 2.4 cm

Fast Charging Specifications (Supported Protocols):
1. Supports 5V, 9V, and 12V input/output voltage levels;
2. Compatible with BC1.2, compatible with Apple, and compatible with Samsung smartphone fast charging;
3. Integrated for Huawei SCP 22.5W Super Fast Charging output protocol;
4. Integrated QC 2.0/QC 3.0 fast charging output protocols;
5. Integrated FCP and AFC fast charging input/output protocols;
6. Integrated USB-C DRP protocol, supporting fast charging input/output;
7. Integrated USB Power Delivery (PD 2.0/3.0) protocol
8. Supports PD 2.0/3.0 input/output protocols
9. PPS supports 3.3V-11V output voltage steps in 20mV increments

Note:
1. Includes only the mainboard and housing; no battery or charging cable is included
2. The metal tab is the positive terminal, and the spring is the negative terminal. Please insert the battery correctly; do not reverse the polarity, as this will burn out the spring.
3. When inserting the battery for the first time, the charge level reading may be inaccurate. After the battery has balanced, please complete two to three full charge-discharge cycles.
4. If the phone proprietary protocol does not support fast charging (e.g., USB without fast charging), you can use PD charging (USB-C output); the PD open-standard protocol provides more stable output.
5. The mainboard is equipped with reverse-polarity protection; inserting the battery backwards will not damage the mainboard. Simply reinsert it correctly to resume normal operation. Do not reverse the polarity, and do not connect damaged or severely degraded batteries, as this may cause a direct short circuit that will burn out the spring