DIY Power Bank Case for 1-3 18650 Batteries USB Charger

This power bank case is designed for DIY enthusiasts to build a portable charger using 1 to 3 pcs 18650 batteries (batteries not included).

Its welding-free design makes installation quick and easy, requiring no soldering skills. Just insert batteries in correct polarity (positive sheet, negative spring) to avoid motherboard damage.

The case features a 5V 1A USB input and output port for seamless charging of your devices.

Just connect a data cable to the USB port, and you're ready to charge smartphones or other gadgets on the go.

Supports standard 18650 batteries of the same capacity only; mix or reverse installation can damage the circuitry.

Made to fit batteries securely with positive sheet and spring contacts ensuring stable power delivery.

Measuring 22mm x 65mm x 98mm, this compact case fits easily in pockets or bags for outdoor, emergency, or everyday use.

Lightweight construction adds minimal extra weight to your DIY power bank project.

• Input Voltage: 5V 1A
• Output Voltage: 5V 1A
• Battery type: 18650 (1-3 pcs)
• Size: 22mm x 65mm x 98mm

1 x Empty power bank case (battery and cables not included)

• 1 x Empty power bank case