DIY 18650 Mini Power Bank Kit – 2-Cell Pocket Charger with Keychain & USB Output (No Cells)

DIY 18650 Mini Power Bank Kit (No Cells Included)

Build your own portable 2-cell power bank with keychain convenience. Ideal for phones, flashlights, or small USB gadgets—perfect for on-the-go DIY power solutions.

🔋 Features

• Holds 2× 18650 Li-ion cells (not included)
• USB-A output (5 V) for charging phones and accessories
• Micro-USB input (5 V) for recharging
• LED indicator shows charging status
• Built-in BMS protection: over-charge, over-discharge, short-circuit safety
• Compact ABS housing with keychain attachment for everyday carry

⚙️ Specifications

• Input: Micro-USB 5 V
• Output: USB-A 5 V
• Compatible Cells: 2× 18650 Li-ion (flat-top preferred)
• Size: ≈ 95 × 35 × 25 mm
• Weight: 0.20 lb (0.09 kg)

🧰 What's Included

• 1× Power bank housing with pre-installed BMS and ports
• 1× Keychain loop and screw set

Small note: cells and wires are not included. You can find compatible 18650 cells on RenewSpark.