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The 7-cell 21700 solderless power bank case is a convenient solution for assembling a high-capacity portable power bank without soldering. The case is designed for seven 21700 lithium-ion batteries and features a removable aluminum-alloy body for convenient installation, battery replacement and maintenance.
The built-in charging board supports fast charging up to 22.5W, including QC4.0 and PD3.0 protocols. The Type-C port is bidirectional, allowing it to be used both for charging the installed batteries and for powering external devices. Additional Lightning and Micro USB inputs provide convenient charging options.
The power bank features two USB-A outputs, a digital display showing battery charge, voltage and current, as well as two LED lights for illumination. The integrated DC output provides an adjustable voltage from 5 to 12V with a 0.2V step, making the device suitable for powering various electronic equipment.
The power bank module includes multiple protection functions against overcharging, over-discharging and overvoltage, providing safer operation.
Important: 21700 batteries are not included. Use only suitable rechargeable lithium-ion 21700 cells. After installing the batteries, the power bank must be connected to a charger for approximately 3 seconds to activate the module.
Features
- Solderless assembly — no spot welding required
- Designed for 7 × 21700 lithium-ion batteries
- Fast charging up to 22.5W
- Supports QC4.0 / PD3.0 / VOOC fast charging
- Bidirectional Type-C port
- USB-A fast charging output
- Lightning and Micro USB charging inputs
- Adjustable DC output from 5 to 12V
- DC voltage adjustment in 0.2V steps
- Digital battery level, voltage and current display
- Two built-in LED lights
- Removable aluminum-alloy housing
- Multilevel protection against overcharge, over-discharge and overvoltage
Specifications
- Type: Solderless 7-cell 21700 power bank case/module
- Battery Type: 21700 Li-ion
- Number of Batteries: 7
- Battery Included: No
- Housing Material: Aluminum alloy
- Housing Dimensions: 103 × 66 mm
- Charging Input: 5V/2A, 5V/3A, 9V/2.2A, 12V/1.6A
- Maximum Charging Power: 22.5W
- USB Output: 5V/2A, 5V/3A, 9V/2.2A, 12V/1.6A, up to 5V/4.5A
- Type-C: Bidirectional input/output
- DC Output: 5–12V
- DC Adjustment Step: 0.2V
- Maximum DC Output Power: 18W
- Display: Digital battery/voltage/current indicator
- Lighting: Dual LED
- Fast Charging: QC4.0, PD3.0, VOOC
- Assembly: Solderless
- Batteries: Not included
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