UGREEN PB311 10000mAh Power Bank is now available at Mascom International for KSh 3,000, configured with one 20W USB-C bidirectional port, one 22.5W USB-A output port, and a 38.2Wh lithium-ion cell rated for roughly 1.9 full charges to an iPhone 15 Pro or about two charges to a typical Android phone. The UGREEN PB311 carries PD 3.0, Quick Charge 3.0, AFC, FCP, and PPS protocols, an LED capacity indicator, and an anti-slip silicone shell. Mascom International stocks the UGREEN PB311 at our Nairobi CBD store inside Old Mutual Building, First Floor Room 4, Kimathi Street, with countrywide pay-on-arrival delivery to all 47 counties.
Kenya's urban professionals, university students, content creators, and field workers form the core audience for the UGREEN PB311 10000mAh Power Bank. Nairobi commuters using Safaricom 5G heavy apps, ride-hailing operators running Bolt and Uber dashboards for 10 hours daily, NGO field staff working in Turkana and Marsabit without reliable mains power, and Kenyatta University students studying through late evening Zoom sessions all share the same headache: a phone that drains by mid-afternoon. The UGREEN PB311 addresses this directly with enough capacity to recharge a 5,000mAh smartphone roughly twice over and the right 20W output to drive iPhone fast-charging or Samsung Galaxy 25W PPS-compatible modes at near full speed.
Unlike other electronics retailers in Kenya selling unbranded 10000mAh power banks of unverified true capacity, Mascom International stocks the UGREEN PB311 with the 38.2Wh rating verified against UGREEN's official specifications and UL, FCC, and CE certifications confirmed on the unit. Customers across Nairobi report that the PB311 holds rated capacity through 500+ charge cycles, recharges itself fully in approximately 3 hours via a 20W AC adapter, and clears airport security for cabin baggage under the 100Wh aviation limit. Visit Mascom International at Kimathi Street to inspect the UGREEN PB311 in person, or order through pay-on-arrival delivery that lets you confirm the unit before paying.
Frequently Asked Questions About the UGREEN PB311 10000mAh Power Bank
How many full phone charges does the UGREEN PB311 actually deliver in real-world Kenyan use?
The UGREEN PB311 delivers roughly 1.9 full charges to an iPhone 15 Pro, approximately 1.8 charges to a Samsung Galaxy S24, and about 1.5 charges to a 5,000mAh device like the Samsung Galaxy A57 or Tecno Camon. The 38.2Wh rated cell capacity converts to 6,000mAh of usable output after voltage conversion losses, which is standard for honest 10000mAh power banks. Users in Nairobi commuting on Thika Road or Mombasa Road typically get a full workday plus one overnight emergency charge per top-up.
Does the UGREEN PB311 support iPhone 15, 16, and 17 fast charging at full speed?
The UGREEN PB311 supports iPhone 15, iPhone 16, and iPhone 17 fast charging through its 20W USB-C Power Delivery 3.0 output, which matches Apple's specified fast-charging input ceiling for these models. Connecting via a USB-C to USB-C cable, the PB311 takes an iPhone 15 Pro from 0 to 50 percent in about 30 minutes. Apple iPhone users replacing the missing in-box charger find the PB311 doubles as both a wall-charging top-up source and a daily backup.
Can the UGREEN PB311 charge Samsung Galaxy phones at Super Fast Charging speeds?
The UGREEN PB311 charges Samsung Galaxy phones at speeds up to 20W through USB-C PD with PPS protocol support, which covers most Samsung A-series and older S-series devices. Galaxy S22, S23, S24, and S25 phones rated for 25W or 45W Super Fast Charging 2.0 will accept the PB311's output at the standard 20W rate rather than top speed. For full 25W Super Fast Charging on Samsung devices, customers should pair the PB311 with mains-only 25W or 45W chargers.
What is the difference between the 20W USB-C port and the 22.5W USB-A port?
The 20W USB-C port carries Power Delivery 3.0 with PPS profiles for iPhone and Samsung devices, while the 22.5W USB-A port carries Quick Charge 3.0, AFC, and FCP protocols for Xiaomi, Realme, Oppo, Huawei, and Honor phones. USB-C is bidirectional, meaning the same port recharges the PB311 from a wall adapter and discharges power to your phone. Total combined output across both ports is capped at 5V/3A when charging two devices simultaneously, which still covers any two phones at standard speeds.
Is the UGREEN PB311 allowed in airline cabin baggage for Kenyan travelers?
Yes, the UGREEN PB311 is permitted in cabin baggage on Kenya Airways, Jambojet, Fly540, and all major international carriers operating from JKIA and Moi International Airport. The 38.2Wh rating sits well under the standard 100Wh limit for power banks in cabin luggage. Travelers must carry the PB311 in hand luggage, not checked baggage, per IATA dangerous goods rules. Customers heading to Diani, Maasai Mara, or international destinations regularly confirm the unit clears security with the printed capacity rating visible.
How long does the UGREEN PB311 take to fully recharge from zero?
The UGREEN PB311 fully recharges in approximately 3 hours when connected to a 20W or higher USB-C PD wall adapter through the USB-C input port. Recharging from a standard 5W adapter extends the time to roughly 7 hours, while a 10W adapter takes about 4.5 hours. The LED indicator on the front of the unit shows charge progress in 25 percent increments. Mascom International recommends pairing the PB311 with a UGREEN or Samsung 25W PD wall adapter for fastest recharge times.
Why should I choose UGREEN over cheaper unbranded power banks sold around Nairobi?
UGREEN is an established global brand with UL, FCC, and CE certifications backing the rated 38.2Wh capacity on the PB311. Unbranded power banks sold in some downtown shops frequently rate themselves at 10000mAh while testing at 4,000mAh or less under load. The PB311 carries multiple protection circuits covering over-charge, over-discharge, over-current, over-voltage, over-temperature, and short-circuit conditions. Customers in Kenya buying through Mascom International get verified UGREEN inventory rather than counterfeit or inflated-capacity alternatives.
Who should buy the UGREEN PB311 versus a larger 20000mAh power bank?
The UGREEN PB311 suits anyone whose daily routine needs 1 to 2 phone top-ups in a compact, pocket-friendly 180 x 100 x 26mm form factor weighing roughly 200 grams. Buyers needing to charge multiple devices, run a laptop, or travel for several days without mains power should consider a 20000mAh unit with 45W or 65W output instead. The PB311 fits jacket pockets, handbags, and backpack laptop sleeves comfortably for daily commutes, gym sessions, university classes, and short field assignments.
Technical Specifications
Battery Cell and Capacity
- 10,000mAh lithium-ion cell rated at 3.82V nominal voltage delivering 38.2Wh total stored energy for honest capacity labeling
- 6,000mAh rated output capacity at 5V/3A after voltage conversion losses, the standard real-world deliverable for 10000mAh units
- Roughly 1.9 full charges to a 3,279mAh iPhone 15 Pro battery and 1.5 charges to a 5,000mAh Samsung Galaxy A57
- 500-plus charge cycle lifespan under normal daily use, equating to roughly 18 to 24 months of consistent service
- UL, FCC, and CE certifications confirm cell quality and electrical safety for international use including Kenya
- 100Wh aviation cabin baggage compliance permits travel through JKIA, Moi International, and all regional airports
USB-C Power Delivery Output and Input
- USB-C bidirectional port delivers 20W PD 3.0 output at 5V/3A, 9V/2.22A, and 12V/1.5A profiles for fast charging compatible devices
- Same USB-C port accepts 20W input for recharging the power bank in approximately 3 hours from a compatible wall adapter
- PPS dynamic charging profile supports Samsung Super Fast Charging modes on Galaxy A and older S series phones
- Compatible with iPhone 15, 16, 17 fast charging delivering roughly 50 percent capacity in 30 minutes
- Direct connection to USB-C laptops including MacBook Air maintains charge during light use though will not drive heavy workloads
- Cable not supplied separately when needed; Mascom International stocks high-quality USB-C to USB-C and USB-C to Lightning cables
USB-A Quick Charge Output
- USB-A port outputs 22.5W peak at 5V/3A, 9V/2A, and 12V/1.5A profiles for legacy and current Quick Charge devices
- Support for Quick Charge 3.0, AFC, and FCP protocols covers Xiaomi, Redmi, Poco, Honor, Huawei, Oppo, and Realme phones
- Standard 5V/2.4A output mode runs older smartphones, Bluetooth earbuds, smartwatches, and accessory devices at full safe speed
- Charges a Redmi Note 13 from 0 to 50 percent in roughly 35 minutes via the USB-A port with bundled Quick Charge cable
- Useful for legacy USB-A cables already in user kits without requiring purchase of additional USB-C cables
- Dual-port simultaneous charging caps total output at 5V/3A combined for two phones at moderate speeds
Build Quality and Safety Protection
- Anti-slip silicone shell finish resists fingerprints, scratches, and slippage during one-handed phone charging on the move
- Net weight of approximately 200 grams keeps the unit pocket-friendly without compromising on capacity
- Dimensions of 180 x 100 x 26mm fit comfortably in jacket pockets, handbags, and backpack laptop sleeves
- Multiple protection circuits cover over-charge, over-discharge, over-current, over-voltage, over-temperature, short-circuit, and electromagnetic interference
- Operating temperature range tolerates Kenya's humid coastal climate at Mombasa and Diani plus dry inland conditions in Eldoret and Nakuru
- Black color finish suits both professional and casual use without showing wear from daily carry
Controls and Status Indicators
- Single physical button on the side activates output, displays remaining capacity, and toggles charging modes
- Four-segment LED capacity indicator shows remaining charge in 25 percent increments visible at a glance
- Auto-on detection begins charging connected devices when a cable is inserted without requiring button press
- Auto-off function disconnects after 30 seconds when no load is detected, preserving stored capacity during transit
- Trickle charge mode activates automatically for low-current devices like Bluetooth earbuds, fitness trackers, and Apple Watch
- Double-press of the button disables the output for safe transport and prevents accidental activation in luggage
Package Contents
UGREEN PB311 10000mAh power bank in Black with silicone non-slip finish
USB-C to USB-C charging cable for two-way charging and device output use
User manual with safety information and quick start instructions
UGREEN branded retail packaging with capacity specifications and certifications printed clearly
Mascom International receipt and warranty documentation included at purchase
Note: Wall adapter not included. Mascom International stocks compatible 20W USB-C PD adapters separately at our Kimathi Street store.
Warranty Coverage
The UGREEN PB311 carries a 6-month Mascom International warranty on manufacturing defects covering cell failure, port malfunctions, charging circuit issues, and safety circuit faults under normal use conditions.
Where to Buy the UGREEN PB311 10000mAh Power Bank in Kenya
UGREEN PB311 is available now at Mascom International, located at Old Mutual Building, First Floor Room 4, Kimathi Street, Nairobi CBD. Visit our store Monday through Saturday, 9:00 AM to 7:00 PM, to test the UGREEN PB311 with your own phone before purchase. Available color: Black with silicone anti-slip finish.
Order through any of the following:
- Phone: +254 708 852 521
- Email: info@mascomintl.com
- Website: www.mascomintl.com
Mascom International ships the UGREEN PB311 across all 47 Kenyan counties with pay-on-arrival delivery. Major cities including Nairobi, Mombasa, Kisumu, Nakuru, Eldoret, Kakamega, and Kisii receive next-business-day delivery. Remote counties including Turkana, Marsabit, Garissa, Wajir, and Mandera receive delivery within 2-3 business days. You inspect the UGREEN PB311, test it against your phone at delivery, and pay only when satisfied.
Our Nairobi CBD service desk handles after-sales support directly. Buyers across Kenya rely on Mascom International for verified UGREEN inventory, accurate capacity ratings, and reliable 6-month warranty backing on every power bank, cable, and charging accessory we stock.
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