8×18650 DIY Battery Case with Adjustable 5-12V Output

This DIY battery case supports stepwise voltage output from 5V to 12V, perfectly adapting to a wide range of DC devices. Users can easily switch voltage levels via the power button with the digital display providing real-time feedback.

• Output power: Up to 22.5W
• USB: 5V/3A, 9V/2A, 12V/1.5A
• DC1 & DC2 outputs: 5-12V adjustable at 3A-1.5A
• Type-C output: 5V/3A, 9V/2A, 12V/1.5A (5V when multiple outputs)

The case requires no welding, making it user-friendly for enthusiasts to assemble with ease. It holds 8 flat head 18650 batteries (not included) to provide long-lasting power suitable for various portable devices.

• Compatible with high-capacity 18650 flat cells
• Internal resistance under 40mΩ recommended
• Supports discharge rate of 1C or higher

Built-in protection circuits ensure operational safety and device stability during use. The case safeguards against multiple electrical risks, preserving battery and device integrity.

• Over-voltage and under-voltage input protection
• Over-current, over-voltage, and short-circuit output protection
• Battery overcharge, over-discharge, and overcurrent protection
• Integrated IC over-temperature protection

Ideal for powering devices such as routers, switches, monitors, LED lights, pumps, heated clothing, small stereos, fans, radios, and massage equipment requiring 5V to 12V DC input under 18W.

• Suitable for DC devices with power demand ≤18W
• Not recommended for ultra-high-power equipment to avoid damage

• Output Power: 22.5W max
• Battery: 8 x 18650 flat head cells (not included)
• USB Output: 5V/3A, 9V/2A, 12V/1.5A
• Type-C Output: 5V/3A, 9V/2A, 12V/1.5A
• DC Output Range: 5V to 12V adjustable, 3A-1.5A
• Type-C Input: 5V/3A, 9V/2A, 12V/1.5A

The package includes everything needed to build the power bank setup.

• Mobile power kit x1
• Accessory kit x1