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UGREEN PB312 20000mAh Two-way Fast Charging Power Bank | 20W PD | 22.5W USB-A | Digital Display
Triple-port portable charger built for Kenyan commutes, travel days, and shared device top-ups
Condition: New
Note: price and availability are subject to change without prior notice
UGREEN PB312 20000mAh Two-way Fast Charging Power Bank is now available at Mascom International for KSh 3,700. The power bank carries 20W USB-C Power Delivery, dual 22.5W USB-A outputs, a digital battery percentage display, and a 12,500mAh rated capacity from its 74Wh cell pack. Find the UGREEN PB312 at Old Mutual Building, First Floor Room 4, Kimathi Street, Nairobi CBD, where you can inspect the unit and confirm fit with your phone or tablet before paying. KSh 3,700 is a fair Kenya market price for a name-brand 20000mAh bank with PD and a screen.
The UGREEN PB312 suits Kenyan office workers, university students, matatu commuters, sales reps covering counties, and content creators shooting on phones away from wall sockets. A drained iPhone 15 Pro returns to 60% in roughly 30 minutes through the USB-C port. The dual USB-A ports let two passengers share a charge during a Nairobi-to-Eldoret bus ride. Riders, hawkers, and field officers facing daily power-rationing schedules in counties like Kiambu, Machakos, or Nakuru get a reliable backup that lasts a full workday.
At Mascom International, we're seeing strong demand for 20000mAh banks under KSh 4,000 because most Kenyan buyers need to charge two devices and have spare capacity left for the next day. Unlike other electronics retailers in Kenya stocking unbranded 20000mAh banks at similar prices, Mascom International stocks the UGREEN PB312 with verified specifications, genuine UGREEN warranty backing, and pay-on-arrival delivery to all 47 counties. Walk into our Kimathi Street shop or order online to receive the UGREEN PB312 anywhere from Mombasa to Lodwar without paying upfront.
Common Questions About theUGREEN PB312
How many times will the UGREEN PB312 charge my phone?
The UGREEN PB312 fully recharges a 4,000mAh phone roughly 3 times and a 5,000mAh phone roughly 2.5 times, based on its 12,500mAh rated output capacity at 5V/3A. An iPhone 15 with a 3,349mAh battery gets close to 4 full charges. A Samsung Galaxy A55 with a 5,000mAh battery gets between 2 and 3 charges depending on screen-on use during charging. Real-world output sits between 60-70% of the 20,000mAh raw cell figure because of voltage conversion losses, which is standard across every brand of power bank on the market today.
How fast does the USB-C port charge an iPhone or Samsung phone?
The USB-C port outputs up to 20W through Power Delivery 3.0, charging an iPhone 15 Pro from 0% to 60% in approximately 30 minutes. Samsung Galaxy S series phones charge at 20W rather than their full 25W or 45W speeds because the PB312 caps PD output at 20W. Pixel 8, OnePlus Nord, Xiaomi Redmi, and most current Android phones reach their advertised PD fast-charge speeds up to the 20W ceiling. The same USB-C port also recharges the power bank itself at 20W input, refilling the unit in roughly 6 hours from empty.
Can I charge a laptop with the UGREEN PB312?
The UGREEN PB312 will charge low-power laptops like the M1 MacBook Air, M2 MacBook Air, Chromebooks, and some thin Windows ultrabooks that accept 20W USB-C PD input, but slowly. The 20W output is below the 30W minimum that most 13-inch laptops draw under active use, so expect the laptop to gain battery only when idle or in sleep mode. For full laptop charging on the go, the UGREEN Nexode 100W or 130W banks are better matches and Mascom International stocks both. The PB312 is purpose-built for phones, tablets, earbuds, and small gadgets.
What is in the UGREEN PB312 retail box?
The UGREEN PB312 retail box includes the power bank itself, a short USB-C to USB-C charging cable for refilling the unit, a user manual, and warranty documentation. No wall charger ships in the box, which is standard across the power bank category from every brand. UGREEN recommends a 20W PD wall charger to hit the 6-hour full-recharge time, and Mascom International stocks compatible UGREEN 20W and 30W PD wall chargers separately from KSh 1,500. The charging cable included works for both input refilling and output to USB-C phones.
Is the UGREEN PB312 safe for daily use and air travel?
The UGREEN PB312 passes UL safety certification and IEC 62133 battery cell standards, with eight protection circuits covering overcharge, over-discharge, over-current, over-power, over-voltage, over-temperature, short-circuit, and electromagnetic interference. The 74Wh rated capacity sits below the 100Wh airline limit for cabin carry-on, so the PB312 is legal on Kenya Airways, Jambojet, Fly540, and all international airlines without prior approval. Always carry the unit in your cabin bag rather than checked luggage per IATA rules. The protection circuits cut power automatically if cell temperature or voltage drift outside safe ranges during charging.
How does the digital display work and what does it show?
The digital display on the UGREEN PB312 shows remaining battery percentage from 1% to 100% in real time during both input charging and output use. Numeric percentages give a more accurate reading than the 4-LED dot indicators on cheaper power banks, so you know exactly when to top up the unit. The display also activates when you press the power button to wake the bank for output, and double-pressing the button stops charging output manually. The screen turns off after a short idle period to preserve cell charge during storage.
Can the UGREEN PB312 charge three devices at the same time?
Yes, the UGREEN PB312 carries one USB-C port and two USB-A ports, supporting up to three devices charging simultaneously. Combined total output caps at roughly 15W shared across all active ports when three devices are connected, so individual charging speeds drop compared to single-port use. Connecting just one phone to USB-C unlocks the full 20W PD speed, while one USB-A device alone hits the full 22.5W. Use the three-port option for travel groups, family trips upcountry, or sales teams sharing one bank across multiple phones during a workday.
How long will the UGREEN PB312 last before the battery degrades?
The UGREEN PB312 lithium polymer cell pack rates for roughly 500 full charge cycles before capacity drops to 80% of the original 12,500mAh figure. Typical Kenyan use of one full discharge every 2-3 days translates to 3-4 years of strong service before any noticeable capacity loss. UGREEN recommends charging the unit at least once every 3 months during storage to preserve cell health. Store the PB312 between 10°C and 35°C, away from direct sunlight in parked cars or near heat sources, which is easy to manage in most Kenyan home and office conditions.
Technical Specifications
Triple-Port Charging Hardware
- 20W USB-C Power Delivery 3.0 port handles bidirectional input and output for current PD-compatible phones and the power bank itself
- Two USB-A ports support QC and Huawei FCP fast-charging protocols with combined 22.5W output for older phones and accessories
- 20,000mAh cell capacity built from two 10,000mAh lithium polymer units for balanced thermal performance and longer cycle life
- 12,500mAh rated output capacity at 5V/3A reflects real usable energy after voltage conversion to phone-friendly 5V
- 74Wh total energy rating sits well below the 100Wh airline cabin-carry limit for stress-free travel
- Total simultaneous output across all three ports caps at 5V/3A for safe multi-device use
Charging Speeds and Real-World Performance
- USB-C PD output supports 5V/3A, 9V/2.22A, and 12V/1.67A profiles for full PD compatibility with iPhones from iPhone 12 onward
- USB-A ports output 5V/3A, 9V/2A, 10V/2.25A, and 12V/1.5A for Samsung, Xiaomi, Tecno, and Infinix fast-charge support
- An iPhone 15 Pro reaches 60% charge in approximately 30 minutes from the USB-C port under standard room conditions
- Full recharge time of the PB312 itself measures around 6 hours with a 20W PD wall charger plugged into the USB-C port
- Cell capacity supports approximately 3 full charges of a 4,000mAh smartphone or 2.5 charges of a 5,000mAh device
- Lower 5V output mode activates by long-pressing the button for low-current accessories like earbuds and smartwatches
Universal Device Compatibility
- Works with iPhone 12, 13, 14, 15, and 16 series at full PD fast-charging speeds up to 20W through the USB-C output
- Charges Samsung Galaxy S, A, M, and Z series phones at 20W PD, below their native 25W or 45W ceilings
- Compatible with Apple AirPods, Galaxy Buds, Sony WF, Marshall earbuds, and most Bluetooth audio accessories
- Supports iPad, Samsung Galaxy Tab, Amazon Fire, and Xiaomi Redmi Pad tablets for travel charging needs
- Pairs with Nintendo Switch in handheld mode for casual gaming away from wall outlets during travel
- Provides slow-rate charging for M1 and M2 MacBook Air laptops during idle or sleep states
Battery Safety and Protection Circuits
- Overcharge protection cuts input when cell voltage reaches the safe upper threshold to preserve long-term cell health
- Over-discharge protection prevents the cells from dropping below safe minimum voltage during deep usage cycles
- Over-current and over-power circuits limit excessive draw to protect both the power bank and connected devices
- Over-voltage and over-temperature sensors monitor real-time conditions and shut down output during abnormal events
- Short-circuit protection responds within milliseconds to prevent cell damage from faulty cables or device faults
- Electromagnetic field protection shields cells from external interference that could disrupt charging stability
Build, Display, and Daily Handling
- Dimensions measure 147mm x 72mm x 27mm, fitting comfortably in a back pocket, handbag, or laptop sleeve compartment
- Total weight stays around 420g, light enough for daily backpack carry without significant strain on shoulder straps
- Digital LED display shows battery percentage from 1-100% in real time during both charging and discharging cycles
- Single power button activates output, with double-press to stop charging and long-press for low-current accessory mode
- Hard plastic shell tolerates daily handling, occasional drops from desk height, and dust exposure in field environments
- Operates reliably across Kenya's coastal humidity, Nairobi office air conditioning, and upcountry dry-season temperatures
Box Contents and Inclusions
- UGREEN PB312 20000mAh power bank in matte black finish
- USB-C to USB-C charging cable for refilling the unit and direct output to USB-C phones
- User manual covering safety guidelines, charging tips, and protection circuit behaviour
- UGREEN warranty card with serial number registration details
Note: A 20W PD wall charger is NOT included in the retail box, which is standard practice across the power bank category. Mascom International stocks compatible UGREEN 20W and 30W PD wall chargers separately from KSh 1,500, along with extra USB-C cables and USB-A to USB-C cables for older phones.
Warranty
The UGREEN PB312 carries a 6-month Mascom International warranty on manufacturing defects under normal use. Our Nairobi CBD service desk handles any warranty claim directly without requiring couriered returns for diagnosis. Bring the unit and original receipt to Old Mutual Building, First Floor Room 4, Kimathi Street, for assessment.
Where to Buy the UGREEN PB312 in Kenya
UGREEN PB312 20000mAh Two-way Fast Charging Power Bank is available now at Mascom International, located at Old Mutual Building, First Floor Room 4, Kimathi Street, Nairobi CBD. Visit our shop Monday through Saturday, 9:00 AM to 7:00 PM, to test the UGREEN PB312 in person before purchase. Available finish: matte black.
Order through any of the following:
- Phone: +254 708 852 521
- Email: info@mascomintl.com
- Website: www.mascomintl.com
Mascom International ships the UGREEN PB312 across all 47 Kenyan counties with pay-on-arrival delivery you only pay when the UGREEN PB312 reaches you. Major centres including Nairobi, Mombasa, Kisumu, Nakuru, and Eldoret receive next-business-day delivery. Remote locations including Lodwar, Wajir, Mandera, and Marsabit receive delivery within 2-3 business days.
The UGREEN PB312 carries a 6-month Mascom International warranty on manufacturing defects under normal use, handled directly through our Nairobi CBD service desk.
Buyers across Kenya rely on Mascom International for honest specifications, accurate pricing, and reliable warranty backing on every power bank we stock.
Disclaimer: We can not guarantee that the information on this product is 100% correct
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