HOCO CJ31 20000mAh Power Bank with Built-In Cables

The HOCO CJ31 20000mAh power bank is built for people who want one reliable charger that covers a full day away from a wall socket. Its 20,000mAh / 74Wh battery gives you extra power for travel, commuting, work, and study.

Two built-in cables (Type-C and Lightning) mean you don't need to pack a separate charging wire, and the LED digital display shows the exact remaining charge. If you are looking for a dependable HOCO power bank with fast-charging support, the CJ31 is a practical everyday choice.

With 22.5W output on USB-A and PD 20W output on Type-C and the built-in cable, it can charge many compatible smartphones, tablets, and other USB-powered devices quickly.

Key Features

• 20,000mAh / 74Wh High-Capacity Battery: Delivers a large energy reserve, so you can recharge your devices multiple times before needing to plug the power bank in again. This suits long commutes, trips, and busy days.
• Built-In Type-C and Lightning Cables: Integrated cables reduce the number of accessories you carry. Your phone can charge straight from the power bank, even when you've forgotten your cable.
• LED Digital Percentage Display: Shows the approximate remaining battery level as a number instead of a basic indicator light. You can see at a glance when it's time to recharge the power bank.
• 22.5W USB-A and PD 20W Type-C Output: Supports fast charging for compatible devices. Actual speed depends on the connected device, the cable or interface, and the charging standard it supports.
• Multi-Protocol Fast Charging (PD3.0, QC3.0, QC2.0, FCP, SCP, AFC): Works with several common fast-charging standards, so it suits a range of compatible smartphones, tablets, and USB-powered devices.
• High-Density Lithium Polymer Cell: Packs a large capacity into a portable body suited to everyday carrying.
• Flame-Retardant PC + ABS Shell: A durable casing built to handle daily use in a bag or pocket.
• USB-C and Micro-USB Input: Gives you two options for recharging the power bank itself.

Why Choose the HOCO CJ31 20000mAh Power Bank

The HOCO CJ31 brings together the features most people look for in a 20000mAh power bank: large capacity, fast-charging support, a clear battery display, and built-in cables. That combination means fewer separate accessories in your everyday bag.

The percentage display takes the guesswork out of planning your day, so you know how much charge is left before you head out. The built-in Type-C and Lightning cables add convenience when you're traveling, commuting, or working away from your desk.

Support for PD3.0, QC3.0, QC2.0, FCP, SCP, and AFC makes it a flexible companion for a wide range of compatible devices. For shoppers in Bangladesh who want a dependable Hoco power bank from a trusted brand, the CJ31 offers solid everyday value.

Best Use Cases

• Travel: Keeps your phone and other devices charged during long journeys.
• Daily Commuting: Covers a full day of use without needing a wall charger.
• Office and Work: A backup power source for busy workdays and meetings.
• Students: Handy for long study days at campus, library, or coaching centers.
• Extended Days Out: Useful whenever you're away from a socket for many hours.

Technical Specifications

Specification	Details
Brand	HOCO
Model	CJ31
Battery Capacity	20,000mAh / 74Wh
Rated Capacity	Approx. 11,000mAh – 12,000mAh (5V)
Battery Cell Type	High-Density Lithium Polymer Battery
Maximum Output Power	22.5W Max (USB-A) / PD 20W Max (Type-C / Built-in Cable)
Fast Charging Protocols	PD3.0, QC3.0, QC2.0, FCP, SCP, AFC
Input Ports	USB-C / Micro-USB
Output Interface	USB-A Ports + Built-in Charging Cables (Type-C, Lightning)
Display	LED Digital Percentage Screen
Casing Material	Flame-Retardant PC + ABS Shell