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Item #:
170012364
Powkey Portable Power Supply, 407 Wh, Large Capacity, AC 300 W Rated Output | バックアップ電源 ぽーたふる電源 小型軽量
86% of respondents would recommend this to a friend
Item #:
170012364
SCR 3066
Price Details
Excluding Shipping & Custom charges ( Shipping and custom charges will be calculated on checkout )
*All items will import from JP
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Imported from Japan store
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Order now and get it around Monday, September 21
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Convenient to use large capacity batteries for camping, sleeping in the car, or during outdoor disasters.
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Note: Step Down Voltage Transformer required for using electronics products of JAPAN store (100 V). Recommended power converters Buy Now.
What Stands Out
High Capacity
With a remarkable 110,000 mAH capacity, the R300 ensures multiple devices stay powered during emergencies, making it an essential tool for household use and disaster readiness.
Pure sine wave
The pure sine wave output protects sensitive electronics, providing safe power for all devices, from households applies to medical equipment, ensuring reliable operation without risk of damage.
Certified Safety
PSE certification guarantees compliance with safety standards, offering peace of mind for users. The R300 is designed for safety and reliability, making it a trustworthy choice for any power needs.
Product Details
| Other Special Features of the Product | BMS Protection, Flashlight, LCD Display, LED Light, Multiple Output Ports |
| Voltage | 100 Volts (AC), 100.0 |
| Power Source | Ac Adapter |
| Number of Ports | 9 |
| Rapid Charging Performance | QC3.0 |
| Battery charge time | 5 Hours |
| Portable | Yes |
| Compatible Devices | Camera |
| Color | Black-orange |
| Battery Cell Type | Lithium Ion |
| Item Weight | 3.4 Kilograms |
| Item Dimensions L x W x Thickness | 19L x 23W x 14Th cm |
| Battery Weight | 220 Grams |
| Brand | powkey |
| Model Number | R300 |
| Number of Items | 1 |
| Country of Origin | China |
| Manufacturer | Hengke Energy (GuangDong) Co., Ltd |
| Number of Batteries | 1 CR5 batteries require. (included) |
| Mfr Part Number | R300 |
| Special Feature | BMS Protection, Flashlight, LCD Display, LED Light, Multiple Output Ports |
| Battery Cell Composition | Lithium Ion |
Who Should Buy?
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Outdoor enthusiasts
Ideal for camping trips, providing reliable power for devices like smartphones, lights, and small applications.
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Emergency Preparedness
Useful for households in disaster-prone areas to power essential devices during exits or emergencies.
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Work From Anywhere
Perfect for remote workers requiring portable power for laptops and other gadgets in various locations.
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High Power Equipment
Not suitable for running large applications like refrigerators or power tools that require excessive energy.
Product Description
Powkey Portable Power Supply, 407 Wh, Large Capacity, AC 300 W Rated Output | バックアップ電源 ぽーたふる電源 小型軽量 純正弦波 AC出力（定格300W 瞬間600W） 急速充電QC3.0 三つの充電方法 液晶画面表示 LEDライト付き アウトドア キャンプ 台風 車中泊 地震停電 緊急 非常用
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Customer Questions & Answers
-
Question:
What devices can the R300 power?
Answer: The R300 can power devices less than 300 watts such as laptops and small electronics. -
Question:
How long does the R300 last while powering a device?
Answer: The working time is approximately 7 hours for a 50W device under optimal conditions. -
Question:
What safety features does the R300 include?
Answer: It includes an advanced protection system to prevent short circuits, overcharging, and overload damage.
powkey R300 Editorial Review
**** The R300 Portable Power Supply has garnered a mixed reception from customers, highlighting its impressive capacity and portability. With a robust power output of 110,000 mAH/407 Wh, users have successfully employed the device for a range of applications, from supporting oxygen concentrators to running CPAP machines for extended periods. Many have reported that they could achieve an operational time significantly longer than the built-in batteries of their appliances, making the R300 a reliable companion for both home use and disaster preparedness. Customers appreciate the lightweight and compact design, which makes it easy to transport. While the overall performance of the power supply has been praised, some users have expressed concerns regarding the charging speed, particularly with AC charging, noting that it can be slow and causes the unit to heat up. The internal fan, which operates during charging and discharging, has also been mentioned frequently as being quite noisy, leading to some dissatisfaction. Support is another area mentioned by users; while some reported receiving helpful assistance, others faced delays in communication, indicating that the customer service experience might not be Consistent. Still, users have found the power supply to be invaluable for various scenarios, from keeping devices operational during emergencies to being a practical solution for outdoor activities. **
Customer Reviews & Ratings
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Pros
- High capacity of 110,000 mAH/407 Wh allows for extended use of powered devices.
- Lightweight and compact design enhances portability.
- Adequate for powering appliances like oxygen concentrators and CPAP machines.
- Good battery life with ample reserves after extended use.
Cons
- Slow charging speed, particularly with AC charging.
Platform Trust & Buyer Confidence
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Jasmin
Verified buyer
“Great products and very good service: very easy and very fast international delivery.”
9 September 2026 · via Trustpilot
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Anke
Verified buyer
“Wonderful online shopping experience, smooth transaction from the start. Payment method works conveniently and delivery is unexpectedly fast and reliable. You go the extra mile for service. What makes this even more amazing, you deliver to Namibia. I will remain a happy Ubuy customer and will increase my purchases for sure! Thank you!”
10 September 2026 · via Trustpilot
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Hazel
Verified buyer
“Very easy to find the products what you need, and so fast delivery, that’s why I highly recommended to others costumers to used ubuy.”
10 September 2026 · via Trustpilot
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Opaleye
Verified buyer
“I received exactly what I ordered I was skeptical about your site because that was my first time to order. But the order came timely and neatly packaged. I was not disappointed. Thank you.”
11 September 2026 · via Trustpilot
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Adele
Verified buyer
“Easy to find and order what you want on the website. Delivery is quick to the UK”
8 September 2026 · via Trustpilot
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- Limitations : For products shipped internationally, please note that any manufacturer warranty may not be valid; manufacturer service options may not be available; product manuals, instructions, and safety warnings may not be in destination country languages; the products (and accompanying materials) may not be designed in accordance with destination country standards, specifications, and labeling requirements; and the products may not conform to destination country voltage and other electrical standards (requiring use of an adapter or converter if appropriate). The recipient is responsible for assuring that the product can be lawfully imported to the destination country. When ordering from Ubuy or its affiliates, the recipient is the importer of record and must comply with all laws and regulations of the destination country.
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SCR 3066
Order now and get it around Monday, September 21
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Features & Benefits
- 407Wh capacity, perfect for outdoor activities.
- Lightweight at only 3.4kg, easy to carry.
- Pure sine wave AC output protects sensitive devices.
- Multiple charging options including AC adapter and car charger.
- LED light adjustable to 3 brightness levels, great for emergencies.
- Advanced safety features including short circuit and overcharge protection.
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