UGREEN 300W Power Bank, 48000mAh/153.6Wh (25286)
Overview
The five-output system is listed up to 300W total: USB-C1 supports up to 140W input/output, USB-C2 and USB-C3 up to 100W each, and USB-A1/USB-A2 up to 22.5W each. Port-nameplate figures are conditional single-port or total maximums; actual power is negotiated and can be redistributed when more than one device is connected.
- nominal internal battery capacity
- energy rating used for travel rules
- remaining-power information
What it does well.
Key features
The defining functions of this SKU are separated from headline marketing so connector roles, power, data, length and battery limits remain clear.
- 48,000mAh nominal capacity with a 153.6Wh energy rating.
- The five-output system is listed up to 300W total: USB-C1 supports up to 140W input/output, USB-C2 and USB-C3 up to 100W each, and USB-A1/USB-A2 up to 22.5W each.
- USB-C1 is bidirectional PD 3.1: up to 140W output or 140W recharge input, including 28V/5A and PPS 3.3–21V/5A.
- USB-C2 and USB-C3 each support up to 100W output and PPS up to 3.3–21V/5A with compatible equipment.
- USB-A1 and USB-A2 each support up to 22.5W with supported USB-A charging protocols.
- Smart LED display plus three-mode area light for checking remaining battery state instead of relying only on indicator dots.
- Automotive-grade LiFePO4 cell chemistry; official model claim of more than 80% capacity after 3,000 cycles under its test conditions.
- Integrated carry handle, non-slip base, smart status display and an LED area light with bright, low and SOS-style modes.
- Heavy 1637g tabletop/ground-use format rather than a pocket power bank.
- Built-in protection design is intended to monitor over-voltage, over-current, over-charge, over-discharge, short-circuit and temperature conditions; correct use and undamaged equipment remain essential.
Performance and planning
Headline watts and gigabits are negotiated maximums, not universal results. Plan around every device, port, cable, charger, battery state and protocol in the path.
The 300W figure is a maximum system total under a supported port allocation. It does not mean every port simultaneously delivers its own nameplate maximum. The gallery also illustrates a particular multi-device combination at 200W; that is one allocation example, not a contradiction of the 300W system ceiling.
USB-C1 can recharge at up to 140W using a compatible PD 3.1/EPR charger and appropriately rated USB-C cable. The included official 240W USB-C cable supports the cable path, but a wall charger is not included.
When multiple outputs are active, the controller can reallocate the available total. A device may briefly reconnect or renegotiate when another cable is inserted; connect the most power-hungry device to the highest-rated port first.
Advertised phone or laptop recharge counts are controlled examples, not guarantees. Device battery size, starting level, screen use, radio activity, temperature, protocol and conversion efficiency all change the result.
Charging normally tapers as the receiving battery fills. A lower displayed rate near full charge does not by itself indicate a fault.
Use scenarios
These practical examples keep the connector direction, supported protocol and safety limits in view.
Field and outdoor USB power. Support USB-C laptops, camera batteries, phones and communications gear at a ground campsite or field station, keeping the unit dry, ventilated and protected from impact.
Mobile workstation. Reserve USB-C1 for a 140W-class laptop and distribute smaller loads across the remaining ports within the 300W total.
Home outage essentials. Keep USB-powered communications and low-voltage devices running temporarily. This unit has no AC outlet and is not a household UPS.
Area light. Use the integrated light for short-duration task or emergency illumination while monitoring remaining battery on the display.
Ground transport only. At 153.6Wh, current IATA power-bank guidance forbids this power bank in passenger baggage. Plan road or rail transport only where local rules allow, or use a regulated dangerous-goods cargo service.
Setup and usability guidance
Use this sequence for a controlled first connection. Follow the connected-device maker’s stricter instruction whenever it differs.
- Charge the power bank on a hard, dry, ventilated surface using the designated USB-C input and a standards-compliant charger/cable that supports the required input profile.
- Before first use, verify the display operates normally and inspect the enclosure and all 5 ports for damage, contamination or looseness.
- Choose the output port by the connected device’s power need. Use the highest-rated USB-C path and an appropriately rated cable for a laptop or other high-power device.
- Connect one device first and confirm stable charging. Add further devices one at a time, expecting the available total to be shared.
- Keep the power bank uncovered and away from direct sun, bedding and other heat sources during charge or discharge.
- Disconnect finished devices, then recharge the power bank before long storage. Do not leave a depleted lithium battery unused for extended periods.
Compatible devices and systems
A connector that fits is only the first check. The host, accessory, operating system and power source must support the requested function.
- USB-C laptops and mobile workstations that accept standard PD 3.1/PD 3.0 profiles up to the selected port maximum.
- USB-C handheld gaming systems, tablets, phones, cameras and accessories within the supported voltage/current profile.
- USB-A phones and accessories using supported SCP, QC, AFC, Apple 5V/2.4A or BC1.2-class modes.
- Not compatible with AC appliances, barrel-input laptops without a supported USB-C PD input, or equipment requiring more than the system’s available USB output.
- USB-C phones and tablets that accept standard USB Power Delivery or one of the specifically supported negotiated profiles.
- USB-A phones, accessories and legacy cables within the listed USB-A port output.
- Low-power wearables or earbuds only when the connected product and power-bank mode support stable low-current charging.
- The operating system is not the deciding factor for ordinary charging; port protocol, voltage/current profile, cable rating and device input are decisive.
- Not every proprietary phone fast-charge mode is universal. Unmatched devices fall back to a mutually supported standard profile.
What this product does
These are the supported functions of this product when the complete connection is compatible.
- Stores rechargeable DC energy and supplies negotiated USB charging away from a wall outlet.
- Provides up to 300W across five USB outputs under a supported power allocation.
- Provides up to 140W through USB-C1 and up to 100W through USB-C2 or USB-C3.
- Accepts up to 140W USB-C1 recharge input with suitable PD 3.1/EPR equipment.
- Uses LiFePO4 chemistry and includes a carry handle, display, non-slip base and area light.
- Shows remaining battery information on the built-in display.
- Can charge more than one compatible device within the stated shared-output limit.
- Automatically negotiates supported charging profiles rather than forcing maximum voltage into every device.
What this product does not do
These exclusions distinguish this SKU from visually similar cables, chargers, hubs, audio products and power stations.
Choose by function: If the required task appears in this exclusion list, select a purpose-built cable, charger, adapter or power product with the needed interface and rating.
- Does not provide an AC mains outlet or act as a UPS/inverter.
- Does not provide wireless charging.
- Does not guarantee the nameplate maximum to every device or every port simultaneously.
- Does not make an under-rated cable capable of high-current USB-C charging.
- Does not replace a device maker’s required charger for firmware updates, recovery or safety-critical use.
- Does not have the same usable output mAh as its internal nominal cell capacity because voltage conversion has unavoidable losses.
- Does not provide an AC outlet, DC barrel output, vehicle socket or wireless charging pad.
- Does not qualify for passenger-air carriage under current IATA power-bank guidance because 153.6Wh exceeds 100Wh.
- Does not deliver 140W through USB-C2, USB-C3 or either USB-A port.
- Does not include the external 140W wall charger needed for maximum-speed recharge.
What to do
These habits support reliable charging, data, audio and battery use while reducing avoidable connector strain.
- Use the correct high-rated USB-C port and cable for the most demanding device.
- Keep the battery’s Wh marking readable for transport inspection.
- Charge and discharge on a firm, uncovered, ventilated surface.
- Disconnect and inspect if charging repeatedly starts and stops or heat becomes excessive.
- Recharge periodically during storage and follow the manual’s temperature guidance.
- Use permitted ground transport; if shipment is necessary, arrange regulated dangerous-goods cargo with the carrier.
What not to do
Avoid these common mistakes even when the plug appears to fit.
- Do not place the power bank in checked baggage.
- Do not carry this 153.6Wh power bank in cabin baggage or present it for ordinary passenger travel.
- Do not use or recharge it inside a closed bag, under bedding or in direct sun.
- Do not puncture, crush, dismantle, burn or expose the battery to water.
- Do not use a swollen, leaking, dropped, cracked or unusually hot unit.
- Do not exceed cable ratings or use loose adapters for high-power charging.
- Do not rely on pass-through charging as a UPS; that role is not for this product.
- Do not allow keys, coins or metal tools to bridge any port or connector.
Warnings and limitations
Review these electrical, thermal, transport and physical limits before connecting valuable equipment.
Stop and recheck: Disconnect power if a connection becomes loose, wet, damaged, swollen, unstable or unusually hot. Never keep reconnecting equipment that shows a safety warning.
- The battery is 153.6Wh. Current IATA power-bank guidance effective in 2026 forbids power banks above 100Wh and up to 160Wh in passenger baggage; it is not a matter of airline approval for this product category. Do not take SKU 25286 in cabin or checked passenger baggage.
- Do not bring this 153.6Wh power bank onto a passenger aircraft. For necessary shipment, consult the carrier about regulated lithium-battery dangerous-goods cargo procedures rather than ordinary baggage.
- Stop using the product if a connector, cable jacket, battery enclosure or plug is bent, cracked, loose, swollen, scorched or unusually hot.
- Keep connectors dry and free of lint or metal debris. Disconnect power before cleaning; never probe a port with metal.
- Never modify, splice, crush or tightly knot a charging cable, charger or battery pack.
- Lithium batteries require careful end-of-life handling. Use an authorised battery/e-waste channel; never place the product in fire or ordinary mixed waste.
- This is a 153.6Wh battery weighing 1637g. Carry it by the handle with a supporting grip, prevent falls and never suspend other loads from the handle.
- Keep the unit upright on a stable, dry surface with ventilation around every side. Do not operate in rain, standing water, a hot parked vehicle or direct sun.
- The area light is not a road flare, certified safety beacon or substitute for required emergency equipment.
- High-power 28V/5A charging needs a genuine PD 3.1/EPR chain. Do not use under-rated cables or loose adapters.
Check before ordering
Confirm connector direction, required protocol, power profile, cable length and package needs before choosing by appearance.
- Confirm 48,000mAh / 153.6Wh is the required balance of runtime, size and transport rules.
- Confirm the highest-rated output port matches the device’s input protocol and wattage.
- Confirm the included cable rating and whether a separate wall charger is needed.
- Confirm simultaneous-device power sharing is acceptable for the planned setup.
- Confirm the dimensions and weight suit the bag or workspace.
- Do not plan passenger-air travel with this 153.6Wh power bank; check ground-transport rules or arrange regulated dangerous-goods cargo.
Care and troubleshooting
Disconnect power before inspection and change one variable at a time when diagnosing a connection.
- Disconnect all cables and wipe the enclosure with a soft, dry cloth. Do not allow liquid or cleaner into a port.
- Store partially charged in a cool, dry place away from combustible clutter; check and recharge it periodically according to the manual.
- If a device charges slowly, test one output at a time, use the highest-rated port, verify cable wattage and compare the device’s supported input profile.
- If the power bank reboots when a second device is attached, disconnect all loads, let it cool, then reconnect the highest-power device first and remain within the shared total.
- If the display seems inaccurate after long storage, complete a normal controlled charge/discharge cycle; stop if the enclosure or temperature appears abnormal.
- A damaged or end-of-life battery should be isolated from metal objects and delivered to an authorised battery service or recycling channel.
At a glance.
- Brand / model
- UGREEN 300W 48,000mAh LiFePO4 portable power bank
- SKU
- 25286
- Product type
- Rechargeable USB power bank
- Nominal battery capacity
- 48,000mAh
- Energy rating
- 153.6Wh
- Maximum listed total/output
- 300W maximum system total; USB-C1 up to 140W
- Ports
- three USB-C ports and two USB-A ports
- Battery chemistry
- Automotive-grade LiFePO4
- Cycle-life claim
- More than 80% capacity after 3,000 cycles under official test conditions
- USB-C1 input/output
- 5V/3A, 9V/3A, 12V/3A, 15V/3A, 20V/5A, 28V/5A; 140W max; PPS 3.3–21V/5A
- USB-C2 / USB-C3 output
- Each: 5V/3A, 9V/3A, 12V/3A, 15V/3A, 20V/5A; 100W max; PPS 3.3–21V/5A
- USB-A1 / USB-A2 output
- Each: 5V/3A, 9V/2A, 12V/1.5A, 10V/2.25A; 22.5W max
- Maximum total output
- 300W under a supported multi-port allocation
- Recharge input
- Up to 140W through USB-C1 with compatible PD 3.1/EPR charger and cable
- Input protocols
- PD 3.1, PD 3.0, PD 2.0, FCP, AFC, BC1.2 and 5V adaptive as listed
- Output protocols
- PD 3.1/3.0/2.0, PPS, QC 3.0/2.0, AFC, Apple 5V/2.4A, BC1.2, 5V adaptive; USB-A also SCP as listed
- Physical features
- Carry handle, non-slip base, status display, three-mode LED area light
- Display
- Smart LED display plus three-mode area light
- Wireless charging
- Not supported
- Dimensions
- 143 × 105 × 77mm (official model specification)
- Weight
- 1637g
- Air-travel classification
- 153.6Wh; forbidden in passenger baggage under current IATA power-bank guidance (>100Wh to ≤160Wh)
- In the box
- 1 × UGREEN 300W 48000mAh/153.6Wh power bank, SKU 25286.
1 × 240W USB-C to USB-C charging cable, per the official model package list.
1 × user manual.
A 140W wall charger, USB-A cable, laptop, phone, case and other scene equipment are not included.
Model specifications are consolidated below. Maximum values remain conditional on the complete negotiated connection.
Only components supported by the model record or an official model package list are included here. Scene devices and props are excluded.
Questions buyers ask.
What is the battery capacity of SKU 25286?
48,000mAh nominal, corresponding to 153.6Wh. Usable delivered energy is lower after conversion and safety reserves.
What is the maximum output?
300W maximum system total; USB-C1 up to 140W. It is conditional on the correct port, compatible device, cable and current power-sharing state.
Can it charge a laptop?
Yes, for USB-C laptops that accept standard PD profiles. USB-C1 supports up to 140W and USB-C2/C3 up to 100W, but the system total and connected-device negotiation still apply.
Can it charge more than one device?
Yes, using its three USB-C ports and two USB-A ports; the total is shared and per-port speed can reduce when several outputs are active.
Can I take it on a flight?
No under current IATA power-bank guidance. At 153.6Wh, it is above the 100Wh passenger power-bank limit and forbidden in both cabin and checked baggage. Use permitted ground transport or regulated cargo procedures.
Can it go in checked luggage?
No. Power banks are spare lithium batteries and must not be placed in checked baggage.
Is the advertised mAh fully available at USB output?
No. The nominal mAh is measured at internal cell voltage; conversion to 5V or higher, cable loss, temperature and safety reserve reduce usable output.
Does it support wireless charging?
No. this product charges through its USB outputs.
Can I use it as a UPS while recharging it?
Do not rely on it as a UPS. Continuous pass-through operation is not here and can add heat and battery cycling.
Is a wall charger included?
No wall charger is identified in the official package list. Maximum 140W recharge requires a compatible PD 3.1/EPR wall charger; a 240W USB-C cable is listed as included.
Why is the output below the headline wattage?
The connected device requests its supported profile, charging tapers near full, heat can reduce power and simultaneous outputs share the total.
What if the battery swells, leaks or becomes very hot?
Disconnect it if safe, move it away from combustible materials without puncturing it, stop use and contact an authorised battery service. Do not ship or discard it casually.