4x18650 DIY Power Bank Case 15000mAh Fast Charging Shell
4x18650 DIY Power Bank Case 15000mAh Fast Charging Shell
Build Your Own Portable Power Bank — No Welding Required
The 4x18650 DIY Power Bank Case lets you create a custom, high-capacity portable charger at home — no soldering or special tools needed. Simply insert four 18650 flat-head batteries (not included), close the case, and you have a powerful 15,000mAh charging solution ready to keep your iPhone, Samsung Galaxy, Huawei, and other USB devices powered wherever you go.
Key Features
- 15,000mAh Capacity: Holds 4 × 18650 batteries for impressive on-the-go power — enough to fully charge most smartphones multiple times.
- Multiple Ports: 2 × USB-A output ports, 1 × Type-C port, and 1 × Micro USB input — charge up to two devices simultaneously.
- Fast Charging Support: Compatible with PPS, PD3.0, PD2.0, QC4+, QC4, QC3, QC2.0, AFC, FCP, SCP, PE2.0/PE1.1, and SFCP protocols for rapid device charging.
- Digital Display: Built-in LED digital display shows remaining battery level at a glance. Double-click the side button to activate the built-in LED light.
- No-Weld DIY Assembly: Tool-free snap-together design makes assembly straightforward — ideal for electronics enthusiasts and everyday users alike.
- Universal Compatibility: Works with iPhone, Samsung Galaxy, Huawei, and virtually any device that charges via USB.
- Durable Plastic Shell: Lightweight yet sturdy ABS plastic construction; available in Black and White.
Specifications
| Model | KA4 Ordinary 10W |
| Capacity | 15,000mAh (4 × 18650, batteries not included) |
| Input | 5V / 2A (Micro USB & Type-C) |
| Output | 5V / 2A (2 × USB-A) |
| Fast Charge Protocols (Output) | PPS, PD3.0, PD2.0, QC4+, QC4, QC3, QC2.0, AFC, FCP, SCP, PE2.0, PE1.1, SFCP |
| Fast Charge Protocols (Input) | PD3.0, PD2.0, AFC, FCP, SCP, PE1.1 |
| Ports | 2 × USB-A, 1 × Type-C, 1 × Micro USB |
| Material | Plastic |
| Colors | Black, White |
What's in the Box
- 1 × Power Bank Case Kit (batteries NOT included)
Made in Mainland China.
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Learn more: ENERGY STAR product efficiency guidance
Frequently Asked Questions
Q: Are the 18650 batteries included with the power bank case?
A: No, the 18650 batteries are not included. You will need to purchase 4 × 18650 flat-head (unprotected) batteries separately to use this DIY power bank case. Please ensure you source quality 18650 cells from a reputable supplier.
Q: What devices is this 4x18650 power bank case compatible with?
A: This universal DIY power bank case is compatible with a wide range of devices including iPhones, Samsung Galaxy smartphones, Huawei devices, and virtually any gadget that charges via standard USB-A, USB Type-C, or Micro USB connections.
Q: Does this power bank case support fast charging?
A: Yes! This case supports multiple fast-charging protocols including PD3.0, PD2.0, PPS, QC4+, QC4, QC3, QC2.0, AFC, FCP, SCP, PE2.0, PE1.1, and SFCP — ensuring rapid charging for compatible devices.
Q: How difficult is it to assemble this DIY power bank?
A: Assembly is designed to be simple and requires no welding or special tools. Just insert four 18650 flat-head batteries into the slots and close the shell. Most users can complete the setup in just a few minutes.
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.