KEBIDUMEI 6-Slot 18650 Power Bank Case – 10W Wireless Charging

Build Your Own High-Capacity Power Bank – No Welding Required

The KEBIDUMEI 6-Slot 18650 Power Bank Case lets you assemble a custom 20,000mAh portable charger using six standard 18650 flat-top lithium batteries (sold separately). With 10W wireless charging and fast-charge wired output, this DIY housing gives you a powerful, flexible charging solution for smartphones, earbuds, and other USB devices — all in a compact, sealed enclosure.

Made in Mainland China.

Key Features

• 6 × 18650 Battery Slots – Supports up to 20,000mAh total capacity (batteries not included)
• 10W Fast Wireless Charging – Qi-compatible wireless output for effortless phone charging
• TYPE-C Input – Supports 5V/3A or higher fast-charge adapters for quick top-ups
• Weld-Free Assembly – Simply insert batteries into labeled slots — no soldering tools needed
• Built-in Protection Circuit – Safeguards against overcharge, over-discharge, and short circuits
• LED Indicator Lights – Color-coded status display for at-a-glance battery level monitoring
• Camping Light Function – Integrated light for outdoor and emergency use
• Sealed Case Design – Durable, well-sealed enclosure keeps batteries secure and protected

How to Set Up Your Power Bank

1. Open the case and locate the 6 internal battery slots.
2. Insert 6 × 18650 flat-top batteries (user-supplied). Use batteries of the same brand, same capacity, undamaged, and with no leakage. Do not mix brands or capacities to ensure safe, balanced operation.
3. Match polarity carefully — align each battery's (+) and (−) poles with the markings inside the slots. Incorrect polarity may prevent the unit from working or damage the circuit board.
4. Close and fasten the case securely so all batteries remain firmly seated.
5. Activate before first use: Connect a TYPE-C cable (user-supplied) to the input port and plug into a 5V/3A+ fast-charge adapter. Charge for 30–60 minutes on first activation to initialize the internal circuit. The LED indicator will light up during charging.
6. Unplug and use — your power bank is now ready to charge devices wirelessly or via USB.

Specifications

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Learn more: EPA guidance on lithium-ion battery handling

Frequently Asked Questions

Q: Are batteries included with the KEBIDUMEI 18650 power bank case?

A: No, batteries are not included. You will need to supply 6 × 18650 flat-top lithium batteries. It is strongly recommended to use 6 batteries of the same brand and same rated capacity for safe and optimal performance.

Q: Does this power bank case support wireless charging?

A: Yes! The KEBIDUMEI power bank housing features a built-in 10W Qi wireless charging pad, allowing you to charge compatible smartphones and devices simply by placing them on top of the unit.

Q: What TYPE-C charger do I need to charge the power bank case?

A: You need a standard TYPE-C cable and a fast-charge adapter rated at 5V/3A or higher. An adapter meeting EU standards is recommended for the best and safest charging experience.

Q: Why does the power bank need to be charged before first use?

A: After installing the batteries for the first time, an initial activation charge of 30–60 minutes is required to properly initialize the internal circuit board. Skipping this step may prevent the unit from functioning correctly.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.