Gaqqee 8×21700 Power Bank Case PD 100W DIY Fast Charging Kit

$88.35 $108.48

Gaqqee 8×21700 DIY Power Bank Case – PD 100W Super-Fast Charging

Build your own high-capacity portable power station with the Gaqqee 8×21700 Power Bank Case. Designed for tech enthusiasts, outdoor adventurers, and DIY electronics hobbyists, this solder-free battery storage box delivers up to 100W of output power via Type-C (PD), USB, and adjustable DC ports — no soldering iron required. Its clear acrylic casing lets you show off the internal build, while a built-in high-brightness LED flashlight with SOS mode makes it a dependable companion in the field.

Made in Mainland China.

Key Features

PD 100W Super-Fast Charging: Type-C output at 20V/5A supports rapid charging for laptops, tablets, and smartphones via PD 3.1, PD 3.0, PD 2.0, PPS, QC 3.0/2.0, SCP, UFCS, and more.
Solder-Free Design: Tool-free battery cell replacement — simply swap 21700 cells without changing the case, making upgrades or maintenance straightforward.
Adjustable DC Output (3.3V–24V): Step-by-step or continuous voltage adjustment via DC ports (5.5×2.1 and 5.5×2.5) to power a wide range of devices and projects.
Multi-Port Outputs: Type-C (PD 100W) + USB (up to 30W fast charge for most phones) + two DC ports for maximum versatility.
High-Transparency Acrylic Case: Crystal-clear housing provides a full view of the internal cell configuration — ideal for showcasing your DIY build.
LED Flashlight + SOS Mode: High-brightness built-in light for outdoor use, emergencies, and camping.
Multi-Layer Protection System: Input overvoltage/undervoltage, output overcurrent/overvoltage/short-circuit, battery overcharge/over-discharge/overcurrent, and IC over-temperature protection for safe, stable operation.
CE / RoHS / WEEE Certified: Meets major international safety and environmental compliance standards.

Technical Specifications

Compatible Batteries	3.7V flat-top, unprotected ternary lithium 21700 (not included)
Battery Configuration	2 in parallel × 4 in series (8 cells total; all cells must be identical)
Battery Pack Voltage	12.5V – 16.5V
Max Output Power	100W
Max Output Current	5A
Type-C Output	PD 100W (20V/5A); PD 3.1/3.0/2.0, PPS, SCP, QC3+/3.0/2.0, UFCS, AFC, FCP, SFCP, SVOOC, VOOC
USB Output	5V/9V/12V/15V/20V @ 3A; QC3+/3.0/2.0, SCP, UFCS, PE1.1/2.0, AFC, FCP, SFCP, SVOOC, VOOC
DC Output Voltage	3.3V – 24V (adjustable); DC1: 5.5×2.1 \| DC2: 5.5×2.5
Type-C Input	PD 100W (20V/5A); supports simultaneous 5V charge & discharge
Dimensions	167 × 52 × 61 mm
Material	High-transparency acrylic + plastic
Certifications	CE, RoHS, WEEE

Button Controls

Power Button (hold): Activate DC mode
Left / Right Buttons (single press): Step-adjust voltage range
Left / Right Buttons (hold): Continuous voltage adjustment

Important Notes

Batteries are NOT included. Use 8 identical, unprotected, flat-top 21700 cells only.
Carefully identify positive (+) and negative (−) terminals before installation to avoid short circuits.
DC ports cannot be used simultaneously with USB or Type-C ports; when multiple ports are active, output is limited to 5V.
Ensure all 8 cells have matching voltage, capacity, discharge rate, and internal resistance for optimal performance.
Smartphone fast charging may be limited to ~30W when using non-original or non-dedicated fast-charging cables.

What's in the Box

Power Bank DIY Kit × 1
Accessory Pack × 1

Frequently Asked Questions

Q: Does the Gaqqee 8×21700 Power Bank Case come with batteries?

A: No, batteries are not included. You will need to source 8 identical 3.7V flat-top, unprotected ternary lithium 21700 cells separately. All 8 cells must match in voltage, capacity, discharge rate, and internal resistance for safe and optimal performance.

Q: Can I charge a laptop with this DIY power bank case?

A: Yes! The Type-C port supports PD 100W (20V/5A) output, which is compatible with most USB-C laptops. The case includes laptop charging detection mode and supports PD 3.1, PD 3.0, and PD 2.0 protocols for broad device compatibility.

Q: Do I need soldering skills to build or maintain this power bank?

A: No soldering is required. The solder-free design allows you to insert and replace 21700 battery cells easily without any soldering tools, making it beginner-friendly and convenient for future upgrades.

Q: What is the adjustable DC output used for?

A: The two DC output ports (5.5×2.1 and 5.5×2.5) support voltage adjustment from 3.3V to 24V, making them ideal for powering routers, LED strips, small electronics, and other DC-powered devices. Note that DC ports cannot be used at the same time as USB or Type-C ports.

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.