Things to consider - iphone does not support LDAC and if your Android does not have LDAC, then it will use AAC because this model does not support APTX codecs. But overall it is a durable and quality product without any extra fuss. Working great!
UGREEN 25742, model PB311, is a slim 10,000mAh wired power bank with a bidirectional 20W USB-C port, a USB-A output rated up to 22.5W and a numerical battery-percentage display. Its headline wattages apply when one compatible output is in use. With USB-C and USB-A active together, the published total changes to 5V/3A, or 15W shared. It has no wireless charging coil and is intended mainly for phones, tablets, earbuds and other USB devices within its output range.
10000mAh / 37WhUSB-C 20W two-wayUSB-A up to 22.5W15W shared dual output
SKU 25742: Exact-model view: PB311 / SKU 25742 is a two-port wired 10,000mAh power bank with a numerical battery-percentage display.
Key features
Two-way USB-C
The USB-C port both recharges the PB311 and powers a compatible device at up to 20W.
22.5W USB-A ceiling
The USB-A port supports up to 22.5W when used alone with a mutually supported fast-charging protocol.
Clear percentage display
The numerical LED readout gives a more useful remaining-charge estimate than four unlabeled lights.
Low-current mode
A dedicated mode helps keep output active for compatible earbuds, watches and other accessories that draw little power.
SKU 25742: The USB-A port is listed up to 22.5W with a compatible phone, protocol and cable; the receiving device decides the negotiated result.
Port power and sharing explained
USB-C input and output use the same port. Its listed profiles are 5V/3A, 9V/2.22A and 12V/1.67A, with a 20W maximum. USB-A output lists 5V/3A, 9V/2A, 10V/2.25A and 12V/1.5A, reaching 22.5W maximum on a compatible device.
Those figures are negotiated ceilings for single-port operation. When both output ports are connected, UGREEN specifies a combined 5V/3A, or 15W total. The 15W is shared between both devices; it is not 15W per port. Disconnect the second device when one phone needs the best available fast-charging rate.
A device controls how much power it accepts. The correct connector alone does not guarantee PD, QC or a particular proprietary 10V mode; the power bank, cable and receiving device must agree on a common profile.
USB-C alone
Up to 20W output; also accepts up to 20W input to recharge the PB311.
USB-A alone
Up to 22.5W output through a compatible charging protocol and cable.
USB-C + USB-A
15W combined at 5V/3A, shared by the two connected devices.
Wireless output
None. SKU 25742 is a two-port wired power bank.
SKU 25742: The USB-C port supports up to 20W in compatible single-output use and also serves as the bidirectional input for recharging the power bank.
Capacity, rated output and recharge expectations
The internal battery is specified as 10,000mAh at 3.7V, equal to 37Wh. UGREEN also publishes a 6,250mAh typical rated output capacity at 5V/3A. The lower 5V figure is expected because the pack raises cell voltage to USB voltage and some energy is consumed by conversion, cable resistance and device charging.
A phone-fill count still cannot be guaranteed from 6,250mAh. The receiving device may charge at a higher voltage, remain in use, warm up, stop before 100% or lose energy in its own charge circuit. Battery age and cable quality also affect the result.
Official model material uses an approximately three-hour recharge as a controlled reference with compatible 20W equipment. Treat that only as a test-based guide: a lower-powered adapter, cable losses, temperature or charging another device can extend the time.
SKU 25742: The capacity visual provides device examples, while the written section keeps nominal cell capacity separate from rated USB output and conversion losses.
Use scenarios
Phone top-ups
Use USB-C PD or the compatible USB-A protocol for everyday iPhone or Android charging away from a socket.
Two-device sharing
Power a phone and earbuds together, accepting the published 15W combined ceiling.
Slim daily carry
The roughly 16.5mm-thick body and percentage display suit work bags, commutes and planned backup power.
SKU 25742: The slim wired design suits a daily carry kit for phones, tablets and accessories when wireless charging is unnecessary.
Setup and usability guidance
Choose the port: use USB-C for up to 20W PD-style charging or USB-A for the device's compatible profile up to 22.5W.
Use a suitable cable: Lightning-equipped iPhones need the appropriate cable; USB-C devices need a cable that supports the required current and protocol.
Connect one high-priority device: for the highest individual rate, leave the other output unused. Two-device charging is limited to 15W total.
Recharge through USB-C: use a compatible USB-C wall source. The supplied USB-A-to-USB-C cable can recharge from a suitable USB-A source, but the negotiated rate depends on that source.
SKU 25742: Recharge PB311 through USB-C with a compatible source and cable, keep it uncovered, and confirm the display rises normally during the session.
Compatible devices and systems
The PB311 is operating-system independent. Compatibility depends on the receiving device's USB charging input, its supported protocol and the cable used.
USB-C phones and tablets
Compatible iPhone, iPad, Galaxy, Pixel, Xiaomi, OnePlus and other devices that accept one of the published USB-C profiles.
USB-A cable users
Devices that charge through a USB-A-to-USB-C, USB-A-to-Lightning or another correctly wired cable and negotiate a supported profile.
Laptop limitation
At 20W USB-C maximum, it is not a normal primary supply for most USB-C laptops, even if a laptop accepts a slow emergency input.
What this product does
Stores 37Wh nominal energy and publishes a 6,250mAh typical output rating at 5V/3A.
Shows approximate remaining battery percentage and supports a low-current accessory mode.
What this product does not do
It does not provide Qi, magnetic or any other wireless charging.
It does not guarantee a fixed recharge count, charge time or fast-charging protocol for every USB device.
What to do
Match the cable to the job: use an undamaged cable that supports the connector, current and charging protocol required by the chosen port.
Keep it ventilated: place the power bank on a firm, open surface while fast charging or recharging; warmth is easier to manage when heat can escape.
Store thoughtfully: for extended storage, keep the unit in a cool, dry place away from direct sun and periodically check its condition and remaining charge.
What not to do
Do not cover it: avoid charging beneath bedding, clothing or inside an unventilated compartment where heat can build up.
Do not expose it to hazards: keep away from water, fire, heaters, hot vehicles, prolonged direct sunlight and freezing or otherwise extreme conditions.
Do not treat a maximum as a constant: advertised wattage is a negotiated ceiling, not a promise that every device, cable or multi-port combination will draw it.
Warnings and limitations
Lithium-battery care: use only within the conditions stated on the product label and manual. Built-in protection is a backup, not permission to use damaged equipment or block ventilation.
Heat changes charging: the power bank or connected device may reduce output when warm. Wireless charging normally creates more heat than an equivalent wired session because energy crosses an air gap.
Children and pets: keep the product and loose cables out of reach unless closely supervised; small accessories and damaged cells can create electrical, heat or choking hazards.
Technical specifications
Brand / model / SKU
UGREEN / PB311 / 25742
Product type
Two-port wired portable power bank
Nominal battery capacity
10,000mAh at 3.7V
Rated battery energy
37Wh
Rated output capacity
6,250mAh typical at 5V/3A
USB-C input
5V/3A, 9V/2.22A or 12V/1.67A; 20W maximum
USB-C output
5V/3A, 9V/2.22A or 12V/1.67A; 20W maximum
USB-A output
5V/3A, 9V/2A, 10V/2.25A or 12V/1.5A; 22.5W maximum
Two-port output
5V/3A, 15W maximum shared
Ports
1 × USB-C input/output; 1 × USB-A output
Display / special mode
Numerical LED battery-percentage display; low-current mode
Wireless charging
Not supported
Approximate dimensions
131.8 × 66 × 16.5mm
Approximate product weight
217g
Battery chemistry
Lithium-polymer
Colour
Black
Package contents
1 × UGREEN PB311 power bank, SKU 25742
1 × 0.5m USB-A to USB-C cable
A wall charger and USB-C-to-USB-C cable are not part of the confirmed package. Use a separately sourced cable when the receiving device or chosen adapter requires a different connector.
SKU 25742: The exact Shopify package visual helps identify PB311 / SKU 25742; use the verified package list below rather than inferring unlisted accessories.
Care, storage and travel checklist
Keep both ports free of lint and moisture, avoid bending plugs while connected, and protect the percentage display from hard impacts. The displayed percentage is an estimate and can settle after a high-load device is connected or removed.
For air travel, use the printed 37Wh energy rating when checking policy. Current IATA guidance places power banks in cabin baggage and requires short-circuit protection; carrier-specific limits and onboard-use rules still apply, so the capacity alone is not transport approval.
Follow current airline and crew instructions about storage and use during the flight.
Product-specific FAQ
What is the fastest single port?
USB-A is listed up to 22.5W, while USB-C is listed up to 20W. The receiving device and cable must support the relevant profile.
What happens when both ports are used?
Total output changes to 5V/3A, or 15W shared between USB-C and USB-A. It is not 15W on each port.
What does two-way USB-C mean?
The same USB-C port can accept up to 20W to recharge the PB311 and deliver up to 20W to a compatible device.
Why is rated capacity 6,250mAh instead of 10,000mAh?
10,000mAh is measured at the 3.7V cells. The rated 6,250mAh figure is measured at 5V/3A after voltage conversion and normal energy loss.
Does it support wireless charging?
No. SKU 25742 has one USB-C port and one USB-A port; it has no Qi or magnetic charging surface.
Can it charge a USB-C laptop?
Its USB-C ceiling is 20W, which is below the normal requirement of most laptops. Some low-power devices may accept limited input, but this is not a primary laptop power bank.
What is low-current mode for?
It helps maintain output to compatible earbuds, watches, fitness bands and other accessories that draw too little power for ordinary automatic detection.
How long does recharging take?
UGREEN uses roughly three hours as a controlled reference with compatible 20W equipment. Actual time varies with the adapter, cable, temperature and simultaneous use.
What cable is included?
The confirmed package contains a 0.5m USB-A-to-USB-C cable. A USB-C wall adapter and USB-C-to-USB-C cable are not included.
Can it power two phones at full speed?
It can power two devices, but both share a 15W combined ceiling. Disconnect one device when the other needs the best single-port rate.
Can I take it on a flight?
Its labelled energy is 37Wh, but travel acceptance is controlled by the airline and route. Keep it in cabin baggage, protect it from damage and short circuit, and check current rules.
Dimentions
131.8 x 66 x 16.5 mm
Warranty
12 Months
Weight
300g
GST Invoice available, just mail back with details to order confirmation mail.
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UGREEN PB311 25742 10000mAh Power Bank, 22.5W, Display
Sale priceRs. 3,109.00
Regular priceRs. 3,776.00
Unit price
37Wh • 2 PORTS • DIGITAL DISPLAY
UGREEN 25742 PB311 10000mAh Power Bank
Overview
UGREEN 25742, model PB311, is a slim 10,000mAh wired power bank with a bidirectional 20W USB-C port, a USB-A output rated up to 22.5W and a numerical battery-percentage display. Its headline wattages apply when one compatible output is in use. With USB-C and USB-A active together, the published total changes to 5V/3A, or 15W shared. It has no wireless charging coil and is intended mainly for phones, tablets, earbuds and other USB devices within its output range.
10000mAh / 37WhUSB-C 20W two-wayUSB-A up to 22.5W15W shared dual output
SKU 25742: Exact-model view: PB311 / SKU 25742 is a two-port wired 10,000mAh power bank with a numerical battery-percentage display.
Key features
Two-way USB-C
The USB-C port both recharges the PB311 and powers a compatible device at up to 20W.
22.5W USB-A ceiling
The USB-A port supports up to 22.5W when used alone with a mutually supported fast-charging protocol.
Clear percentage display
The numerical LED readout gives a more useful remaining-charge estimate than four unlabeled lights.
Low-current mode
A dedicated mode helps keep output active for compatible earbuds, watches and other accessories that draw little power.
SKU 25742: The USB-A port is listed up to 22.5W with a compatible phone, protocol and cable; the receiving device decides the negotiated result.
Port power and sharing explained
USB-C input and output use the same port. Its listed profiles are 5V/3A, 9V/2.22A and 12V/1.67A, with a 20W maximum. USB-A output lists 5V/3A, 9V/2A, 10V/2.25A and 12V/1.5A, reaching 22.5W maximum on a compatible device.
Those figures are negotiated ceilings for single-port operation. When both output ports are connected, UGREEN specifies a combined 5V/3A, or 15W total. The 15W is shared between both devices; it is not 15W per port. Disconnect the second device when one phone needs the best available fast-charging rate.
A device controls how much power it accepts. The correct connector alone does not guarantee PD, QC or a particular proprietary 10V mode; the power bank, cable and receiving device must agree on a common profile.
USB-C alone
Up to 20W output; also accepts up to 20W input to recharge the PB311.
USB-A alone
Up to 22.5W output through a compatible charging protocol and cable.
USB-C + USB-A
15W combined at 5V/3A, shared by the two connected devices.
Wireless output
None. SKU 25742 is a two-port wired power bank.
SKU 25742: The USB-C port supports up to 20W in compatible single-output use and also serves as the bidirectional input for recharging the power bank.
Capacity, rated output and recharge expectations
The internal battery is specified as 10,000mAh at 3.7V, equal to 37Wh. UGREEN also publishes a 6,250mAh typical rated output capacity at 5V/3A. The lower 5V figure is expected because the pack raises cell voltage to USB voltage and some energy is consumed by conversion, cable resistance and device charging.
A phone-fill count still cannot be guaranteed from 6,250mAh. The receiving device may charge at a higher voltage, remain in use, warm up, stop before 100% or lose energy in its own charge circuit. Battery age and cable quality also affect the result.
Official model material uses an approximately three-hour recharge as a controlled reference with compatible 20W equipment. Treat that only as a test-based guide: a lower-powered adapter, cable losses, temperature or charging another device can extend the time.
SKU 25742: The capacity visual provides device examples, while the written section keeps nominal cell capacity separate from rated USB output and conversion losses.
Use scenarios
Phone top-ups
Use USB-C PD or the compatible USB-A protocol for everyday iPhone or Android charging away from a socket.
Two-device sharing
Power a phone and earbuds together, accepting the published 15W combined ceiling.
Slim daily carry
The roughly 16.5mm-thick body and percentage display suit work bags, commutes and planned backup power.
SKU 25742: The slim wired design suits a daily carry kit for phones, tablets and accessories when wireless charging is unnecessary.
Setup and usability guidance
Choose the port: use USB-C for up to 20W PD-style charging or USB-A for the device's compatible profile up to 22.5W.
Use a suitable cable: Lightning-equipped iPhones need the appropriate cable; USB-C devices need a cable that supports the required current and protocol.
Connect one high-priority device: for the highest individual rate, leave the other output unused. Two-device charging is limited to 15W total.
Recharge through USB-C: use a compatible USB-C wall source. The supplied USB-A-to-USB-C cable can recharge from a suitable USB-A source, but the negotiated rate depends on that source.
SKU 25742: Recharge PB311 through USB-C with a compatible source and cable, keep it uncovered, and confirm the display rises normally during the session.
Compatible devices and systems
The PB311 is operating-system independent. Compatibility depends on the receiving device's USB charging input, its supported protocol and the cable used.
USB-C phones and tablets
Compatible iPhone, iPad, Galaxy, Pixel, Xiaomi, OnePlus and other devices that accept one of the published USB-C profiles.
USB-A cable users
Devices that charge through a USB-A-to-USB-C, USB-A-to-Lightning or another correctly wired cable and negotiate a supported profile.
Laptop limitation
At 20W USB-C maximum, it is not a normal primary supply for most USB-C laptops, even if a laptop accepts a slow emergency input.
What this product does
Stores 37Wh nominal energy and publishes a 6,250mAh typical output rating at 5V/3A.
Shows approximate remaining battery percentage and supports a low-current accessory mode.
What this product does not do
It does not provide Qi, magnetic or any other wireless charging.
It does not guarantee a fixed recharge count, charge time or fast-charging protocol for every USB device.
What to do
Match the cable to the job: use an undamaged cable that supports the connector, current and charging protocol required by the chosen port.
Keep it ventilated: place the power bank on a firm, open surface while fast charging or recharging; warmth is easier to manage when heat can escape.
Store thoughtfully: for extended storage, keep the unit in a cool, dry place away from direct sun and periodically check its condition and remaining charge.
What not to do
Do not cover it: avoid charging beneath bedding, clothing or inside an unventilated compartment where heat can build up.
Do not expose it to hazards: keep away from water, fire, heaters, hot vehicles, prolonged direct sunlight and freezing or otherwise extreme conditions.
Do not treat a maximum as a constant: advertised wattage is a negotiated ceiling, not a promise that every device, cable or multi-port combination will draw it.
Warnings and limitations
Lithium-battery care: use only within the conditions stated on the product label and manual. Built-in protection is a backup, not permission to use damaged equipment or block ventilation.
Heat changes charging: the power bank or connected device may reduce output when warm. Wireless charging normally creates more heat than an equivalent wired session because energy crosses an air gap.
Children and pets: keep the product and loose cables out of reach unless closely supervised; small accessories and damaged cells can create electrical, heat or choking hazards.
Technical specifications
Brand / model / SKU
UGREEN / PB311 / 25742
Product type
Two-port wired portable power bank
Nominal battery capacity
10,000mAh at 3.7V
Rated battery energy
37Wh
Rated output capacity
6,250mAh typical at 5V/3A
USB-C input
5V/3A, 9V/2.22A or 12V/1.67A; 20W maximum
USB-C output
5V/3A, 9V/2.22A or 12V/1.67A; 20W maximum
USB-A output
5V/3A, 9V/2A, 10V/2.25A or 12V/1.5A; 22.5W maximum
Two-port output
5V/3A, 15W maximum shared
Ports
1 × USB-C input/output; 1 × USB-A output
Display / special mode
Numerical LED battery-percentage display; low-current mode
Wireless charging
Not supported
Approximate dimensions
131.8 × 66 × 16.5mm
Approximate product weight
217g
Battery chemistry
Lithium-polymer
Colour
Black
Package contents
1 × UGREEN PB311 power bank, SKU 25742
1 × 0.5m USB-A to USB-C cable
A wall charger and USB-C-to-USB-C cable are not part of the confirmed package. Use a separately sourced cable when the receiving device or chosen adapter requires a different connector.
SKU 25742: The exact Shopify package visual helps identify PB311 / SKU 25742; use the verified package list below rather than inferring unlisted accessories.
Care, storage and travel checklist
Keep both ports free of lint and moisture, avoid bending plugs while connected, and protect the percentage display from hard impacts. The displayed percentage is an estimate and can settle after a high-load device is connected or removed.
For air travel, use the printed 37Wh energy rating when checking policy. Current IATA guidance places power banks in cabin baggage and requires short-circuit protection; carrier-specific limits and onboard-use rules still apply, so the capacity alone is not transport approval.
Follow current airline and crew instructions about storage and use during the flight.
Product-specific FAQ
What is the fastest single port?
USB-A is listed up to 22.5W, while USB-C is listed up to 20W. The receiving device and cable must support the relevant profile.
What happens when both ports are used?
Total output changes to 5V/3A, or 15W shared between USB-C and USB-A. It is not 15W on each port.
What does two-way USB-C mean?
The same USB-C port can accept up to 20W to recharge the PB311 and deliver up to 20W to a compatible device.
Why is rated capacity 6,250mAh instead of 10,000mAh?
10,000mAh is measured at the 3.7V cells. The rated 6,250mAh figure is measured at 5V/3A after voltage conversion and normal energy loss.
Does it support wireless charging?
No. SKU 25742 has one USB-C port and one USB-A port; it has no Qi or magnetic charging surface.
Can it charge a USB-C laptop?
Its USB-C ceiling is 20W, which is below the normal requirement of most laptops. Some low-power devices may accept limited input, but this is not a primary laptop power bank.
What is low-current mode for?
It helps maintain output to compatible earbuds, watches, fitness bands and other accessories that draw too little power for ordinary automatic detection.
How long does recharging take?
UGREEN uses roughly three hours as a controlled reference with compatible 20W equipment. Actual time varies with the adapter, cable, temperature and simultaneous use.
What cable is included?
The confirmed package contains a 0.5m USB-A-to-USB-C cable. A USB-C wall adapter and USB-C-to-USB-C cable are not included.
Can it power two phones at full speed?
It can power two devices, but both share a 15W combined ceiling. Disconnect one device when the other needs the best single-port rate.
Can I take it on a flight?
Its labelled energy is 37Wh, but travel acceptance is controlled by the airline and route. Keep it in cabin baggage, protect it from damage and short circuit, and check current rules.
