---
product_id: 46813009
title: "NJF-5X"
brand: "krisdonia"
price: "A$258"
currency: AUD
in_stock: true
reviews_count: 8
category: "Krisdonia"
url: https://www.desertcart.com.au/products/46813009-njf-5x
store_origin: AU
region: Australia
---

# Adjustable 5-20V DC output 50000mAh ultra-high capacity Multi-port QC3.0 USB-A & Type-C NJF-5X

**Brand:** krisdonia
**Price:** A$258
**Availability:** ✅ In Stock

## Summary

> 🔋 Power your hustle anywhere, anytime — because dead batteries are so last decade.

## Quick Answers

- **What is this?** NJF-5X by krisdonia
- **How much does it cost?** A$258 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.au](https://www.desertcart.com.au/products/46813009-njf-5x)

## Best For

- krisdonia enthusiasts

## Why This Product

- Trusted krisdonia brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Travel-Ready & Compact:** Sleek 1.2kg design fits effortlessly in your briefcase or backpack for on-the-go professionals.
- • **Power That Lasts All Day:** Charge your 65W laptop up to 2.5 times and smartphones 11-18 times without hunting for outlets.
- • **Built-In Safety & Longevity:** UL-certified Li-Polymer cells with 6 security protections and 1000+ recharge cycles for worry-free use.
- • **Simultaneous Charging Magic:** Pass-through charging lets you power the bank and your devices at once—stay connected without downtime.
- • **Tailored Voltage for Every Device:** Easily switch between 5V to 20V output to safely power laptops, tablets, and more with precision.

## Overview

The Krisdonia 50000mAh Laptop Power Bank is a high-capacity, portable charger designed for professionals on the move. Featuring adjustable DC output from 5V to 20V, it supports direct laptop charging without the original charger. Equipped with QC3.0 USB-A and Type-C ports, it powers multiple devices simultaneously. Its compact 1.2kg form factor fits easily in bags, while UL-certified safety features and over 1000 recharge cycles ensure reliable, long-term performance.

## Description

desertcart.com: Krisdonia 50000mAh Laptop Power Bank 5/9/12/16/19/20V Portable Laptop Battery Charger with QC3.0 USB-A Port & 12V Type-C Port for Laptop, Tablet, Smartphone and More Devices : Electronics

Review: Reliable, Powerful, and Incredibly Versatile - This power bank is an absolute powerhouse. It’s become my go-to for keeping all my devices charged, especially when traveling or working remotely. 🔋 Massive Capacity With 50000mAh, it easily charges my laptop, tablet, and phone multiple times before needing to be recharged. It’s ideal for long trips or power outages. ⚡ Customizable Voltage Output The adjustable DC output (from 5V to 20V) allows me to safely charge a wide range of devices, including laptops that require specific voltage levels. 🔌 Multiple Ports for Convenience It includes USB-A with QC3.0, a USB-C port, and a DC port, allowing me to charge several devices at once without any drop in performance. 🧳 Portable Despite the Power Though it’s high-capacity, it’s still compact enough to fit into a backpack or laptop bag. The included case is also a nice bonus for organized travel. ✅ Pros: Extremely high capacity (50000mAh) Adjustable voltage for charging different devices Multiple output ports (USB-C, USB-A QC3.0, DC) Great for travel, emergencies, or remote work Overall: The Krisdonia 50000mAh Power Bank delivers exceptional performance with flexibility and power to spare. It’s well worth the investment if you need serious backup energy for your devices. Highly recommended.
Review: LIBERATES ME FROM RUNNING OUT OF BATTERY TIME! - GOOD - I am very pleased and happy with this product. Krisdonia (Shenzhen Tech. Corp.) has liberated me and made me feel free to sit for hours at outdoor coffee shops and indoor mall seating by the fountain. I get my laptop battery charged plus many MORE hours from the Krisdonia. I am using an Acer Aspire 5 (A515-43-R19L). Krisdonia is a really good equipment! Operating this battery is very simple, but the directions must be followed EXACTLY for success using it. Directions say turn ON by holding down front button for 2 seconds - needs to be 3 seconds to hold down and turn ON and then one changes the voltage selection by rapidly pressing the same front button two times ("double click") and then 2 times again for the next voltage level selection until one has the correct setting for your device - I also use the Krisdonia for cell phone charging and recharging u. s. b. bicycle lights. When finished charging devices one should hold down the same front button 3 seconds to turn Krisdonia OFF. The Krisdonia is very attractive in black and elegantly minimal. The older technology of the Krisdonia makes it about 3 lbs., but that is why it is affordable. The so called "pass through" charge meaning charging the device, using the Krisdonia plugged into an outlet while simultaneously using the device, may or may NOT work. The directions say if Krisdonia automatically shuts off, then this will mean that it is telling you: "pass through" will not work. I cannot do this pass through - the light on front and the Krisdonia itself just turn off. However, I can plug the CHARGED Krisdonia into the laptop WITHOUT having the Krisdonia plugged into a wall outlet and charge the laptop WHILE using the laptop. In other words- - I have to unplug the KRISDONIA from the wall outlet before I can connect to the devices for charging them while using these devices. For those, like myself, who do not know what "voltage" means -here's a tip not to worry: if you set the voltage too low nothing will happen. It just will not go on and no electricity goes through. If you set the voltage too high, it will only put the right amount in without causing harm. In other words the higher voltage amount will be reduced to the voltage needed by the item being charged. It will not burn or explode. Incidentally, I charge my bicycle rechargeable lights and smartphone also-works fabulous! I am able to use the Krisdonia and connect it to my laptop with only one simple cord provided - real simple! Charging Krisdonia takes approx. 3-4 hours and will read out a digital % number as it charges and reaches 100%, but it can also be partially charged like if you are in a hurry possibly use it when it says 47% and then that takes about 1 more hour to reach 100%.

## Features

- Pass Through: Support charging and discharging at the same time. The function is activated by pressing the button for 2 seconds while the power bank is charging.
- Emergency Battery Backup for Outdoors: Size 19.5 x 15 x 2.8cm and weight 1.2kg. You can easily put it in your briefcase, backpack or carrying bag when you're on the go. It keeps your devices powered for emergency.
- Adjustable DC Output 5V-20V: The DC OUT port supports 5V/8.4V/9V/12V - 3A (max); 16V(compatible 16.5V) / 20V(compatible 19V, 19.5V for laptops) - 4.7A (max). Krisdonia 50,000 can directly charge your laptop without needing your laptop charger. Please double click the power button to set the voltage before charging from the DC OUT port.
- QC3.0 USB/TYPE-C 12V Output: 2x QC3.0 USB-A ports for smartphones, tablets and other USB devices. 1x TYPE-C port for iPad, not for 20V TYPE-C laptop. ( Please charge your 20V TYPE-C laptop from the DC OUT port with the TYPE-C converter. )
- High Capacity: The 50000mAh(3.7V)/185Wh external battery provides enough juice to power a 65W laptop for 2.5 times and smartphone for 11-18 times. DC-IN 19V/2A enables the power bank to be recharged in 6 hours.
- Superior Quality & Safety Guaranteed: Conform to UL1642 and UL2056 Standards. Constructed with Li-Polymer battery cells and built in 6 security protection to ensure safety use and 1000+ recharge cycles. We provide our customers 12-month warranty.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B074N1B15F |
| Amperage | 3 Amps |
| Antenna Location | Gaming Console |
| Battery Capacity | 50000 Milliamp Hours |
| Battery Cell Type | Lithium Polymer |
| Battery Charge Time | 7 Hours |
| Battery Weight | 850 Grams |
| Best Sellers Rank | #28,347 in Cell Phones & Accessories ( See Top 100 in Cell Phones & Accessories ) #764 in Cell Phone Portable Power Banks |
| Brand | Krisdonia |
| Color | black |
| Compatible Devices | Laptop, Router, Smartphone, Tablet |
| Compatible Phone Models | All |
| Connector Type | USB Type A, USB Type C |
| Customer Reviews | 4.3 4.3 out of 5 stars (973) |
| Item Dimensions | 7.68 x 5.91 x 1.1 inches |
| Item Dimensions L x W x Thickness | 7.68"L x 5.91"W x 1.1"Th |
| Item Weight | 1155 Grams |
| Manufacturer | Shenzhen Nejifu Technology Co.,Ltd |
| Model Number | NJF-5X |
| Number of Batteries | 1 Lithium Polymer batteries required. (included) |
| Number of Ports | 4 |
| Other Special Features of the Product | Portable, Wireless Charging |
| Reusability | Rechargeable |
| UPC | 613852009215 |
| Unit Count | 1 Count |
| Voltage | 12 Volts |
| Warranty Type | Limited |

## Product Details

- **Battery Capacity:** 50000 Milliamp Hours
- **Brand:** Krisdonia
- **Color:** black
- **Connector Type:** USB Type A, USB Type C
- **Special Feature:** Portable, Wireless Charging

## Images

![NJF-5X - Image 1](https://m.media-amazon.com/images/I/616Gq24eDgL.jpg)

## Available Options

This product comes in different **Color** options.

## Questions & Answers

**Q: The description says "update" supports pass through charging. i cannot, however get anything to charge while the power bank, itself, is charging?**
A: Yes it does, but there's a trick:  You must first plug the cable to charge the battery pack, and second, press the power button until the display says 5V.  This enables pass-through mode.  Of course you can double-press the power button if you need to adjust the DC output if needed.   Just remember that when you plug in the charging cable for the battery pack, it will immediately shut off the output until you turn it on again.

**Q: how does manufacturer come up 50000 mah ? what cell using ?**
A: I believe that is at 3.7V, so 50,000mAh * 3.7V = 185 Wh.

**Q: Does it/ can it be used to change a Surface pro 4**
A: Yes. It can charge Surface pro 4 which is 12v. 
DC output: 5V/8.4V/9V/12V 3A (max)    16V(16.5V)/20V(19V, 19.5V) 4.7A (max) 
But we don't include this adapter. You need to buy an adapter or a cable by youself.
Thank you. Have a nice day!

**Q: Pretty sure this cannot be checked in a aircraft baggage. Kindly clarify if this is allowed as a hand luggage on an airplane provided its power?**
A: Dear customer, this power bank is 185Wh and you cannot take it on plane, even a hand luggage. You can buy Krisdonia 25000mAh which can be taken on plane.
Thank you. Have a good one.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Reliable, Powerful, and Incredibly Versatile
*by A***R on June 30, 2025*

This power bank is an absolute powerhouse. It’s become my go-to for keeping all my devices charged, especially when traveling or working remotely. 🔋 Massive Capacity With 50000mAh, it easily charges my laptop, tablet, and phone multiple times before needing to be recharged. It’s ideal for long trips or power outages. ⚡ Customizable Voltage Output The adjustable DC output (from 5V to 20V) allows me to safely charge a wide range of devices, including laptops that require specific voltage levels. 🔌 Multiple Ports for Convenience It includes USB-A with QC3.0, a USB-C port, and a DC port, allowing me to charge several devices at once without any drop in performance. 🧳 Portable Despite the Power Though it’s high-capacity, it’s still compact enough to fit into a backpack or laptop bag. The included case is also a nice bonus for organized travel. ✅ Pros: Extremely high capacity (50000mAh) Adjustable voltage for charging different devices Multiple output ports (USB-C, USB-A QC3.0, DC) Great for travel, emergencies, or remote work Overall: The Krisdonia 50000mAh Power Bank delivers exceptional performance with flexibility and power to spare. It’s well worth the investment if you need serious backup energy for your devices. Highly recommended.

### ⭐⭐⭐⭐⭐ LIBERATES ME FROM RUNNING OUT OF BATTERY TIME!
*by A***R on March 7, 2024*

GOOD - I am very pleased and happy with this product. Krisdonia (Shenzhen Tech. Corp.) has liberated me and made me feel free to sit for hours at outdoor coffee shops and indoor mall seating by the fountain. I get my laptop battery charged plus many MORE hours from the Krisdonia. I am using an Acer Aspire 5 (A515-43-R19L). Krisdonia is a really good equipment! Operating this battery is very simple, but the directions must be followed EXACTLY for success using it. Directions say turn ON by holding down front button for 2 seconds - needs to be 3 seconds to hold down and turn ON and then one changes the voltage selection by rapidly pressing the same front button two times ("double click") and then 2 times again for the next voltage level selection until one has the correct setting for your device - I also use the Krisdonia for cell phone charging and recharging u. s. b. bicycle lights. When finished charging devices one should hold down the same front button 3 seconds to turn Krisdonia OFF. The Krisdonia is very attractive in black and elegantly minimal. The older technology of the Krisdonia makes it about 3 lbs., but that is why it is affordable. The so called "pass through" charge meaning charging the device, using the Krisdonia plugged into an outlet while simultaneously using the device, may or may NOT work. The directions say if Krisdonia automatically shuts off, then this will mean that it is telling you: "pass through" will not work. I cannot do this pass through - the light on front and the Krisdonia itself just turn off. However, I can plug the CHARGED Krisdonia into the laptop WITHOUT having the Krisdonia plugged into a wall outlet and charge the laptop WHILE using the laptop. In other words- - I have to unplug the KRISDONIA from the wall outlet before I can connect to the devices for charging them while using these devices. For those, like myself, who do not know what "voltage" means -here's a tip not to worry: if you set the voltage too low nothing will happen. It just will not go on and no electricity goes through. If you set the voltage too high, it will only put the right amount in without causing harm. In other words the higher voltage amount will be reduced to the voltage needed by the item being charged. It will not burn or explode. Incidentally, I charge my bicycle rechargeable lights and smartphone also-works fabulous! I am able to use the Krisdonia and connect it to my laptop with only one simple cord provided - real simple! Charging Krisdonia takes approx. 3-4 hours and will read out a digital % number as it charges and reaches 100%, but it can also be partially charged like if you are in a hurry possibly use it when it says 47% and then that takes about 1 more hour to reach 100%.

### ⭐⭐⭐⭐⭐ Excellent Power Bank
*by L***Z on January 7, 2023*

I’m mainly using it to power a Positive Grid Spark 40 amplifier. It works very well, but if anything, the Krisdonia is too smart for my purposes. Since the Spark is not a device being charged, the power bank doesn’t recognize it, and the 1-minute shutdown kicks in. The solution is to plug in a USB device to increase the current draw and keep the power bank on. This was recommended by many members of Spark 40 groups on FB, and also by Krisdonia themselves. A simple USB light will do. You could also charge a device via USB while powering the amplifier, but again, once the Krisdonia senses the device is fully charged, the 1-minute shutdown will occur. So for me, it’s a USB light as it requires a constant draw. While the design choice of needing to double-press the power button to cycle through the voltage choices is a very solid one, it’s a minor hassle but ensures greater accuracy than putting the voltage choices on a slider-switch, for example, which could easily be placed in the wrong position and POOF!, bad things happen! Krisdonia designed it in such a way that the user HAS to make sure it is in the correct voltage for the customer’s intended application. What would be a very nice feature would be if it could “remember” the last selected voltage output. Cycling through all the settings to get to 20V (what the Spark needs) every single time the power bank is used is a slight inconvenience. This suggestion was sent to Krisdonia, and their reply was that they would take it under consideration. Overall, highly recommended. Fast-charging, long-lasting, so far it’s been very dependable for a number of uses. Even with its shortcomings, such as having to set the correct voltage every time it’s used, and needing to bump up the draw with a USB device, again, just for my purposes regarding the amplifier, it’s no fault of the power bank’s design, I very much like it and I’ll keep it. I can use it for much more than just powering the Spark.

## Frequently Bought Together

- Krisdonia 50000mAh Laptop Power Bank 5/9/12/16/19/20V Portable Laptop Battery Charger with QC3.0 USB-A Port & 12V Type-C Port for Laptop, Tablet, Smartphone and More Devices
- ORIEMARS USB Laptop Light with Adjustable Gooseneck, 3 Color x 3 Brightness + 3 Mini LED Lights

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*Product available on Desertcart Australia*
*Store origin: AU*
*Last updated: 2026-04-22*