SPECIFICATIONS

Brand Name: RNABAU

Choice: yes

Item Type: DIY Box & Shell

Origin: Mainland China

Important Notice First

• This product is a DIY power bank kit, FLAT TOP 21700 lithium batteries are NOT included, batteries need to be purchased and welded by yourself.

• Only compatible with flat top 21700 cylindrical lithium batteries, pointed top batteries cannot be installed normally.

• Basic welding operation skills are required for assembly; improper welding may damage the circuit board.

• Do not overcharge, over-discharge or short-circuit the lithium battery to avoid safety hazards.

• Multiple safety protection circuits are built in, but please use standard qualified 21700 batteries.

Product Introduction

This is a high-performance DIY portable power bank housing kit, built with aluminum alloy shell and PVC fireproof structure, durable and heat-resistant. Equipped with intelligent LED digital display, it can real-time show remaining power percentage clearly. Support 22.5W full protocol fast charging, compatible with PD, QC, FCP, AFC multiple fast charge protocols. Two Type-C bidirectional ports + one USB-A output port, support simultaneous multi-device charging to meet daily charging demands of mobile phones, tablets, earphones and other digital devices.

Product Core Advantages

Multi-layer Intelligent Safety Protection System

Built-in 9-fold safety protection: overcharge, over-discharge, overvoltage, overtemperature, overcurrent, short circuit, magnetic field, power and resume protection, effectively avoid battery damage and safety risks during charging and discharging.

22.5W High-Speed Fast Charging

Dual Type-C bidirectional input & output + USB-A fast output, maximum 22.5W charging power, greatly shorten charging waiting time.

Clear Digital Power Display

HD LED digital screen, real-time real-time battery level monitoring, you can grasp the remaining power at a glance.

Sturdy Aluminum Alloy Appearance

Aluminum alloy shell with matte texture, anti-drop, scratch-resistant and good heat dissipation, compact size 98*50*46mm, easy to carry for travel, business and outdoor use.

4 Slots Large Capacity Design

Supports 4 pcs flat top 21700 cylindrical batteries, maximum assembled capacity up to 20000mAh, long-lasting power supply.

Complete Product Parameters

Product Name: Portable Power Bank DIY Kit

Shell Material: PVC fireproof material + aluminum alloy

Applicable Battery: 4pcs Flat Top 21700 cylindrical lithium battery (battery not included)

Dimension: 98*50*46mm

Max Output Power: 22.5W

Output Specification:

Dual Type-C: 5V/3A,9V/2.2A,10V/2.25A,12V/1.67A

USB-A: 5V/3A,9V/2A,10V/2.25A,12V/1.5A

Multi-port simultaneous output: 5V/3A

Input Specification (Type-C): 5V/3A,9V/2A,12V/1.5A

Protection Function: Overcharge, Over-discharge, Overvoltage, Overtemperature, Overcurrent, Short Circuit, Magnetic Field, Power, Resume Protection

Package List

1 x Aluminum Alloy Outer Shell

1 x Main Circuit Board with Digital Display

1 x Plastic Inner Battery Holder

2 x End Cover Plates

2 x Fixing Screws

1 x Switch button

(Note: 21700 lithium batteries are not contained in the package, for reference only)

Warm Tips

Please use insulated gloves and professional welding tools when welding batteries.

Keep the product away from high temperature, fire and humid environment.

If the circuit board gets hot abnormally during use, stop using it immediately and check the battery connection.

This DIY kit is only for personal daily charging use, not for industrial power supply.