DIY Router Power Bank Parts With 6 Cells

Build your own rechargeable battery power supply for a compatible WiFi router or other DC-powered device with this DIY parts kit. It includes a six-cell power bank case, six SF 18650NR-22 rechargeable batteries, a 3S 20A battery protection board, a 12.6V charger, and connectors for your custom assembly.

Package Includes

• 1 × 21700 / 18650 six-cell power bank case for WiFi routers and other devices
• 6 × SF 18650NR-22 Li-ion 18650 2200mAh rechargeable battery cells
• 1 × 3S 20A Li-ion battery BMS protection board
• 1 × 12.6V 2A DC power adapter with EU plug and barrel jack
• 1 × DC-022 panel-mount female DC socket, 5.5mm × 2.1mm
• 1 × DC male power connector with wire lead
• 1 × Common-cathode 5mm diffused RGB LED
• 2 × 1kΩ ¼-watt (0.25W), 5% tolerance resistor
• 1 × 1N5408 diode

DIY Applications

Suitable for electronics enthusiasts assembling a rechargeable power supply for compatible routers and other DC devices. The included DC connectors provide connection points for charging and powering your device, while the RGB LED can be incorporated into a custom indicator circuit.

Important Compatibility and Assembly Notes

This is a DIY component kit, not an assembled or ready-to-use router UPS. Wiring, assembly, and testing are required.

Verify your device’s required voltage, current, connector size, and polarity before connecting it. A 3S Li-ion battery pack reaches 12.6V when fully charged, and the listed parts do not include a separate voltage regulator. Do not assume compatibility with every 12V router or with devices requiring 5V or 9V.

Use the BMS and charger only with a correctly wired, compatible 3S battery pack. Confirm that the included 1kΩ resistors are suitable for your intended LED circuit. Lithium-ion battery assembly requires proper insulation and protection against short circuits.