DIY Power Bank Case for 4×18650 Batteries with Dual USB

This power bank case is designed for effortless assembly without welding, simplifying the DIY process for hobbyists. It includes a built-in anti-reverse circuit that protects your batteries from damage caused by incorrect installation.

Supports both flat head and pointed head 18650 lithium batteries, offering flexibility in battery choice. The case provides fast and stable charging performance to reliably power your devices.

Made from ABS flame retardant plastic, the case offers robust protection and durability. The LCD screen independently displays the status of each individual 18650 battery for convenient real-time monitoring.

• Sun stripe anti-slip surface finish for secure handling
• Integrated 1W LED flashlight with easy controls

Equipped with protection against reverse connection, series faults, overcharge, and over-discharge to ensure battery and device safety.

• Input: 5V/2A
• Outputs: USB1 – 5V/1A, USB2 – 5V/2A
• Conversion rate: 85%

• Material: ABS flame retardant plastic
• Battery Capacity: Holds 4×18650 batteries (not included)
• Display: LCD digital independent battery level display
• LED Lamp Power: 1W
• Control: Long press switch for LED flashlight, short press to toggle LCD screen
• Automatic shutoff after approx. 65 seconds of inactivity

Pack includes the DIY power bank sleeve without batteries, ready for user assembly.

• Mobile power sleeve ×1 (without batteries)