21 Cells 18650 DIY Power Bank Case Kit with Flashlight

This DIY power bank case holds 21 flat head 18650 batteries, allowing you to customize your portable power source. Weighing only 296 grams (without batteries), it's compact and practical for both home and professional use.

Available in black and white, the kit features a plastic shell with a detachable super bright flashlight to expand functionality.

Supports multiple fast charging protocols, including PD (Power Delivery), QC (Quick Charge), and wireless charging with output powers ranging from 5W to 22.5W. Compatibility covers 5V-3A, 9V-2A, and 12V-1.5A input/output power settings, ensuring rapid and efficient charging for various devices.

• D21-PD+Flashlight max output: 5V-3A / 9V-2A / 12V-1.5A
• Wireless charging output up to 15W
• Input max power up to 12V-1.5A

Designed strictly for flat head 18650 batteries with voltage between 3.2V and 4.2V. Batteries with damaged outer skin or pointed heads must not be used. Correct polarity placement is essential to safe operation. Avoid storing or using in high temperature environments.

• Use only flat head 18650 batteries
• Battery outer skin must be undamaged
• Voltage range: 3.2V – 4.2V
• Place batteries with correct polarity

• Dimensions: 187 x 82 x 64 mm
• Weight: 296g (without batteries)
• Material: Plastic
• Color options: Black, White
• Includes motherboard, spring basket, lens, and lanyard

• 1 x 18650 Battery Charger Box (batteries not included)

• 1x 18650 Battery Charger Box (Batteries not included)