🚨 Important Safety Notice (Must Read Before Use)

This product does NOT include batteries. Requires 6×21700 flat-top cells.

⚠ 1. Correct Polarity Required — Wrong Installation Will Cause Damage

Because this is a removable battery design, the housing currently does not support fool-proof polarity protection.
If the batteries are inserted with reversed polarity, the mainboard and BMS may burn, causing serious damage or fire hazards.
👉 Always check the + / – markings inside the shell before installing the cells.

⚠ 2. Battery Indicator Resets After Reinstallation

Every time the batteries are removed and reinstalled, the display will return to 0%.
The MCU must relearn the battery capacity.
👉 Charge once to 100% to complete auto-calibration.

⚠ 3. Wide Fast-Charging Protocol Support

PPS / PD2.0 / PD3.0 / QC2.0 / QC3.0 / SCP / FCP / AFC / BC1.2
Fully compatible with laptops, tablets, phones, and gaming devices.

⚠ 4. Important: Use a Certified Fast-Charging Cable

To achieve 100W high-power charging, you must use a cable that supports the corresponding fast-charging standard (PD E-Marker cable / high-power Type-C cable).
👉 Ordinary cables cannot reach 100W output.

📌 Product Description

100W PD Power Bank Case Kit – Build Your Own Fast-Charging Power Bank

This DIY power bank case lets you assemble your own high-performance power bank using 6×21700 flat-top cells (not included).
With true 100W PD output, a tool-free removable shell, and laptop-grade charging, it’s designed for users who need power, flexibility, and long-term cost efficiency.

🔋 Why You Need This (Pain Points Solved)

1. Ordinary Power Banks Too Slow? — This One Delivers Real 100W

Most consumer power banks stop at 20W or 30W.
This kit outputs up to 100W (20V/5A)—enough for laptops and gaming devices.
Supports all major protocols: PD / PPS / QC / SCP / FCP / AFC.

👉 Note: Full 100W requires a PD E-Marker fast-charging cable.

2. Replaceable Batteries — No More Throwing Away Power Banks

You can freely choose and replace your own cells:
✔ Use higher-quality batteries
✔ Upgrade capacity anytime
✔ Lower long-term cost
✔ No welding required

3. Safer Battery Installation Guidance

✔ Clear positive/negative marking
✔ Protected contacts
✔ HD display shows real-time wattage, voltage, and percentage
✔ Smart MCU learns capacity after full charge

4. Charge Multiple Devices at the Same Time

Dual USB-C (100W In/Out) + Dual USB-A
Supports up to 4 devices simultaneously—ideal for travel, office, and emergency use.

⚙ Key Features

• Supports 6×21700 flat-top cells

• True 100W PD fast charging

• Works with laptops, tablets, phones

• Tool-free removable shell

• Wide fast-charging protocol compatibility

• HD real-time voltage/power display

• Dual USB-C + Dual USB-A outputs

👍 Recommended For

✔ DIY enthusiasts
✔ Laptop users
✔ Travelers needing high power
✔ Users wanting replaceable batteries