18650 Portable Power Bank Case – Single-Cell USB Charger Tube with LED (DIY Shell or Complete Pack, Black)

Simple. Compact. Pocket-sized. This single-cell 18650 power bank case is a lightweight solution for keeping your phone or small electronics charged on the go. Available as a DIY shell or pre-built with a high-quality Samsung cell.

Features

• Compact Design: Slim cylindrical tube with USB output – perfect for pocket carry.
• DIY Ready: Accepts 1× 18650 lithium-ion cell. Easy assembly with included control board.
• Smart Protection: Over-charge, over-discharge, and short-circuit safeguards.
• Charging Indicator: Built-in LED shows charge status.
• Color Options: Available in Black.

Choose Your Version

• DIY Shell (No Cell): Case + charging PCB. Add your own 18650 cell.
• Complete Pack (With Cell): Professionally assembled with 1× Samsung 25R 2500mAh cell. Fully tested by RenewSpark.

Notes

• DIY version requires your own 18650 cell.
• Capacity depends on the cell used (Samsung 25R ≈ 2500mAh).
• Not airline-restricted under 100Wh limit.

Backed by RenewSpark 30-day money-back guarantee.