UGREEN PB312 Power Bank

1. Introduction

We’ve all been there—you’re in the middle of an important call, navigating through Nairobi traffic, or waiting at the airport for a flight, and your phone battery hits 5%. The dreaded low-battery warning appears, and you’re left scrambling for an outlet that doesn’t exist.

Enter the UGREEN PB312 Power Bank—a high-capacity 20000mAh portable charger that keeps your devices powered for days. With 20W two-way fast charging, three ports (1x USB-C, 2x USB-A), a smart LED digital display, and pass-through charging capabilities, this UGREEN power bank delivers the perfect balance of capacity, speed, and portability.

At Calvantech, we’re proud to offer the UGREEN PB312 Power Bank to customers across Kenya who demand genuine, high-quality accessories for their daily needs.

2. Why You Need the UGREEN PB312 Power Bank

Let’s be honest—battery anxiety is real. Whether you’re a professional hopping between meetings, a student attending back-to-back lectures, or a traveler exploring new places, running out of battery at the wrong moment can be a disaster.

The UGREEN PB312 Power Bank solves this problem with professional-grade portable power:

• 20000mAh capacity – Charges an iPhone 15 Pro up to 4.5 times and a Galaxy S24 Ultra up to 3 times

• 20W two-way fast charging – Charge your devices quickly and recharge the power bank itself

• Three ports – Charge up to three devices simultaneously

• Smart LED display – Know exactly how much power remains—no more guessing

• Pass-through charging – Charge the power bank and your devices at the same time

• Airline approved – 74Wh capacity is well within carry-on limits

Key benefits at a glance:

• 20000mAh high-capacity battery – Up to 4–7 days of battery life

• 20W Power Delivery (PD 3.0) – Fast charging for compatible devices

• 22.5W Quick Charge (QC) – Rapid charging via USB-A ports

• Two-way fast charging – Fast charge your devices AND fast recharge the power bank

• Smart digital display – Precise battery percentage at a glance

• 3 ports – 1x USB-C + 2x USB-A for maximum compatibility

• Pass-through charging – Charge the power bank and devices simultaneously

• Low current mode – Safely charge earbuds, smartwatches, and other low-power devices

• Comprehensive safety protections – 8 layers of protection for peace of mind

• Compact and portable – Weighs just 248g

• Travel-friendly – Airline approved for carry-on luggage

3. Key Features of the UGREEN PB312 Power Bank

3.1 20000mAh High-Capacity Battery – Power for Days

The UGREEN PB312 Power Bank packs a massive 20000mAh high-capacity battery (74Wh) consisting of 2×10000mAh cells. That’s enough capacity to:

• Charge an iPhone 15 Pro up to 4.5 times

• Charge a Galaxy S24 Ultra up to 3 times

• Charge an iPad Mini 6 up to 2.8 times

• Keep your devices powered for 5–7 days of regular use

Whether you’re traveling, working remotely, or just out for the day, the UGREEN PB312 ensures you never run out of power.

3.2 20W Two-Way Fast Charging – Charge Both Ways, Fast

The UGREEN PB312 features two-way fast charging technology—meaning it can fast-charge your devices AND be fast-charged itself.

• USB-C Input/Output – Supports 20W PD 3.0 fast charging

• Fast recharge – The power bank can be fully recharged in approximately 6 hours using a 20W PD charger

• Supports PD, QC, PPS, and FCP protocols – Wide compatibility with various devices

No more waiting all day for your power bank to recharge. The UGREEN PB312 gets back to full power efficiently, so it’s always ready when you need it.

3.3 Dual USB-A 22.5W Fast Output – Lightning-Fast Device Charging

The two USB-A ports on the UGREEN PB312 deliver up to 22.5W of fast charging power each. They support multiple fast-charging protocols including QC, PPS, and FCP, ensuring rapid charging for a wide range of Android and iOS devices.

3.4 Smart Digital LED Display – Know Your Power

Unlike traditional power banks with vague 4-LED indicators, the UGREEN PB312 features a clear digital LED screen that shows the exact remaining battery percentage.

• Precise power level – No more guessing

• Real-time updates – See exactly how much charge remains

• Always informed – Plan your charging needs with confidence

3.5 Three Ports – Charge Up to Three Devices Simultaneously

The UGREEN PB312 features three output ports:

• 1x USB-C – 20W PD 3.0 fast charging

• 2x USB-A – 22.5W fast charging each

You can charge up to three devices at the same time with a combined total output of 15W—perfect for keeping your phone, tablet, and earbuds powered simultaneously.

3.6 Pass-Through Charging – Maximum Convenience

The UGREEN PB312 supports pass-through charging, allowing you to charge the power bank and your connected devices simultaneously. This means you can:

• Plug the power bank into a wall outlet

• Connect your devices to the power bank

• Charge everything at the same time

No more waiting for the power bank to charge before you can charge your devices.

3.7 Low Current Mode – Safely Charge Earbuds and Smartwatches

The UGREEN PB312 includes low current mode technology that supports 200mA charging for small-current devices. Long press the power button for 3 seconds to turn low current mode on and off. This allows you to safely charge:

• Wireless earbuds (AirPods, Galaxy Buds, etc.)

• Smartwatches

• Fitness bands

• Bluetooth headphones

No more worrying about damaging your low-power devices with excessive current.

3.8 Comprehensive Safety Protections – 8 Layers of Security

The UGREEN PB312 is engineered with intelligent voltage and current management and a total of 8 safety protections:

• Over-charge protection

• Over-discharge protection

• Over-current protection

• Over-power protection

• Over-voltage protection

• Over-temperature protection

• Short-circuit protection

• Electromagnetic field protection

These protections ensure safe charging for both the power bank and your connected devices. The power bank also meets UL certification and IEC 62133 compliance.

3.9 Airline Approved – Travel with Confidence

With a capacity of 20000mAh / 74Wh, the UGREEN PB312 is well within airline carry-on limits (typically 100Wh maximum). You can take it on flights without any hassle—perfect for business travelers and vacationers alike.

3.10 Compact and Portable – Easy to Carry

Measuring approximately 147 × 72 × 27 mm and weighing just 248g, the UGREEN PB312 is compact enough to slip easily into your bag or backpack. It’s designed to be your reliable travel companion—whether you’re commuting across Nairobi or flying internationally.

3.11 USB-C to USB-A Cable Included – Ready to Use Out of the Box

The UGREEN PB312 comes with a USB-C to USB-A charging cable included in the box. This means you can start using it immediately—no need to buy additional cables.

4. Who Is This UGREEN Power Bank For?

The UGREEN PB312 Power Bank is designed for anyone who needs reliable, high-capacity portable power:

• Business Professionals – Stay powered through back-to-back meetings and client calls

• Remote Workers – Keep devices charged during power outages or when working away from outlets

• Students – Power through lectures, study sessions, and group projects

• Travelers & Digital Nomads – Stay connected during flights, road trips, and adventures

• Content Creators – Keep cameras, phones, and accessories powered on the go

• Everyday Users – Never worry about low battery during daily commutes and errands

• Emergency Preparedness – Essential backup power during outages or natural disasters

5. Compatibility – Works with Almost Everything

The UGREEN PB312 Power Bank offers broad compatibility across a wide range of devices:

Smartphones:

• Apple – iPhone 17/16/15/14/13/12/11 series, iPhone SE

• Samsung – Galaxy S25/S24/S23/S22/S21 series, Galaxy A series

• Google – Pixel series

• Huawei – P series, Mate series

• Xiaomi, OPPO, OnePlus, Vivo, and more

Tablets:

• iPad Pro / iPad Air / iPad mini

• Samsung Galaxy Tab

Other Devices:

• Wireless earbuds (AirPods, Galaxy Buds, etc.)

• Smartwatches / iWatch

• Fitness bands

• Bluetooth headphones

• Portable speakers

• Nintendo Switch

Supported Fast Charging Protocols:

• USB Power Delivery 3.0 (PD 3.0)

• Quick Charge (QC)

• PPS (Programmable Power Supply)

• FCP (Huawei Fast Charging Protocol)

Included Accessories:

• USB-C to USB-A charging cable – Ready to use out of the box

6. How to Use the UGREEN PB312 Power Bank

Using the UGREEN PB312 Power Bank couldn’t be simpler:

1. Check the battery level – The digital LED screen shows the exact remaining battery percentage

2. Charge your device – Connect your phone, tablet, or other device to the USB-C or USB-A port using your device’s charging cable

3. Charge multiple devices – Connect up to three devices simultaneously for convenient multi-device charging

4. Recharge the power bank – Connect the USB-C port to a 20W PD charger (not included) for fast recharging in approximately 6 hours

5. Use pass-through charging – Charge the power bank and your connected devices at the same time

6. Use low current mode – For earbuds, smartwatches, and other low-power devices, long press the power button for 3 seconds to activate low current mode

Pro Tips for Best Results:

• Use a 20W USB-C PD wall charger for the fastest recharging

• The 20000mAh capacity is ideal for extended travel—from weekend trips to international flights

• Store in a cool, dry place when not in use

7. Why Buy from Calvantech?

At Calvantech, we’re committed to providing Kenyan customers with genuine, high-quality tech accessories at competitive prices. When you purchase the UGREEN PB312 Power Bank from us, you get:

• 100% Genuine UGREEN Products – No fakes, no compromises

• Competitive Pricing – The best value for your money

• Fast Delivery – Across Kenya

• Expert Support – Our team is here to help you choose the right accessories

Explore our full range of accessories:

• All Accessories

• UGREEN Accessories

Other UGREEN products you might like:

• UGREEN USB-C Hubs & Adapters – Explore our full UGREEN collection

• Laptop Accessories – Find everything you need for your setup

8. Conclusion

The UGREEN PB312 Power Bank is the perfect portable charging solution for anyone who needs reliable, high-capacity power on the go. With its 20000mAh massive battery, 20W two-way fast charging, three ports (1x USB-C, 2x USB-A), smart LED display, pass-through charging, and comprehensive safety protections, this UGREEN power bank delivers everything you need in a travel-friendly package.

Whether you’re a business professional powering through meetings, a student surviving back-to-back lectures, a traveler exploring new destinations, or simply someone who never wants to see the low-battery warning again, the UGREEN PB312 Power Bank ensures you stay connected—without compromise.

Ready to stay powered up for days? Order the UGREEN PB312 Power Bank today from Calvantech and experience the difference that genuine UGREEN quality makes.

👉 Shop UGREEN PB312 Power Bank Now

UGREEN PB312 Power Bank Video Review