19 Jun 2026
Great Service!!!
Eric was incredibly helpful and assisted me in making a quick last minute order! The product turned out great!! Read more
Power Banks Big Boost Quick QuoteQuote
Our Big Boost Power Bank comes with a huge charging capacity, ready to save your Customers and Clients from a low-battery situation. The Big Boost comes with 3 connector options, including a Micro-USB, USB-C and Lightning Adapter. Both sides can be Photo Printed with your image, logo, slogan and more.
8 Days Lead Time. We assemble, customize and deliver your order all within this time!
8 Working Days Lead Time for orders up to 2,000 units. For larger orders, a little longer - contact your Account Manager or refer to your Quote.
Available from just 10 units
Whether you're after a small or large quantity, our friendly Account Managers will give you the best service they can. Enquire to get prices, virtual proofs with your logo and dummy samples. No obligation to order.
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remaining to order for delivery on Thursday, 13 Aug 2026
29 Jul 2025
Awesome customer service!
They are very prompt in responding. I received samples and pictures of the products with our logo on them before ordering. We received our order very quickly. Customer service is awesome! We will order again!
2 Dec 2024
Power Banks
Alex was helpful, informative and timely with information to help us make the right choice.
9 Sep 2024
Repeat customer
This is the second time we've ordered from Flashbay. The company is very responsive and helpful. We look forward to working with them again.
19 Apr 2024
I placed an inquiry on the website needing items for an upcoming trade show was contacted pretty quickly. Ellie was fantastic to work with, she helped me through all of my questions and sent me samples as well as visual examples with my company logo. the product is very high quality and the staff is extremely knowledgeable. We will be ordering more from this company.
Capacities
4400mAh
4400mAh
See how many times this Power Bank can charge
the popular devices below before a Power Bank recharge is needed:
the popular devices below before a Power Bank recharge is needed:
Charge Times *
* These charge times assume no degradation of the battery in the smartphone, tablet or eBook and should be considered a guide. Actual performance can vary.
6600mAh
6600mAh
See how many times this Power Bank can charge
the popular devices below before a Power Bank recharge is needed:
the popular devices below before a Power Bank recharge is needed:
Charge Times *
* These charge times assume no degradation of the battery in the smartphone, tablet or eBook and should be considered a guide. Actual performance can vary.
10050mAh
10050mAh
See how many times this Power Bank can charge
the popular devices below before a Power Bank recharge is needed:
the popular devices below before a Power Bank recharge is needed:
Charge Times *
* These charge times assume no degradation of the battery in the smartphone, tablet or eBook and should be considered a guide. Actual performance can vary.
Colors
Black
Pantone Reflex Blue C
Pantone Green 361 C
Pantone Yellow C
Pantone Orange 021C
Pantone Red 186 C
Pantone Rhodamine Red
White
Or we can Pantone® match the shell to a color of your choice for 250+ units. Learn more
Branding Options and Print Area
Branding Area designated by
Area Front: 70mm X 70mm
Area Back: 70mm X 70mm
Area Front: 70mm X 70mm
Area Back: 70mm X 70mm
Photo Printing
This product can be branded in full color. Logo Artwork should be high resolution and 300DPI. You can upload files as .png, jpeg or .gif formats. Low resolution image files lifted from websites will not give good results. Our prices always include printing in full color on all the print areas shown on the product description.
Gallery - Custom Power Banks, Big Boost
Safety
- Output over-current and over-voltage protection
- Input over-current and over-voltage protection
- High temperature shut down
- Short-circuit protection
- Electrostatic Discharge (ESD) protection
Features
- Auto-on when device connected. Auto-standby when disconnected.
- Auto-adapting charge current to support variety of devices and optimise charge time
- Neat and tidy retractable cables
- A handy LED Torch that can be turned on and off by pressing the status button.
How they come
Your Power Bank
Lightning &
USB-C Adapters
USB-C Adapters
User Manual
Kraft Card Box
Services
Pantone® Color Matching
Should you require a product in precise color not covered by our standard color range (perhaps to match your brand guidelines), we can produce the product exactly to any Pantone® color you specify.Dimensions and Weight
Length: 90mm (3.5 inches)Width: 90mm (3.5 inches)
Height: 25mm (1 inches)
Weight: 201.50 grams (7.1 ounces)
Tech Specs
Input: 5V/1A, Output: 5V/1ABattery Type: Lithium-ion
Full Charge Time: 4.5 - 11 Hours
Environment
RoHS This product fully conforms to RoHS Directive (EU Restriction of hazardous substances).
Customer Reviews of Big Boost
20 Dec 2024
Exceptional Service and Quality – Thanks to Tom at Flashbay!
I had an outstanding experience working with Tom James at Flashbay! From the very beginning to the final delivery, Tom was incredibly helpful, proficient, and attentive. He was quick to respond to any questions or requests and displayed great patience throughout the entire process. Tom made sure that every detail was taken care of, continuously checking to ensure that nothing was out of place. The products were delivered on time and exceeded my expectations! Thanks to Tom and the Flashbay team, I will definitely be ordering from them again in the future. Thanks, Tom!
31 Oct 2024
Smooth communication!
Quick and helpful communication. Sending samples of products. Patience during our decision process. Answering all of our questions. All of the processes run really smoothly!
Special thanks to Lee Ronghua with who I was in touch.
12 Aug 2024
5 star service and product
Quick response both by mail and by phone. The representative was knowledgeable about the product options and communicated well. The product arrived incredibly fast and as promised. 5 stars!
6 Dec 2023
Very responsive and fast service
Very responsive and fast service. I am happy with the product I ordered.
23 Oct 2023
Donavan was awesome to work with
Donavan was awesome to work with! i explained I need a 100 battery banks for a fund raiser and it was a last minute project, and needed a really quick turn around. He made that happen and even with time to spare. THANK YOU!
18 Sep 2023
Great company, easy ordering
Great company, excellent communication and a quality product
14 Sep 2023
Flashbay is THE BEST!
Conor Kennedy made the experience absolutely seamless and offered us the best rates for an A+ product. Customer service was TOP NOTCH. I have never had an experience like this before. We ordered 50 custom power banks for our company and they are phenomenal -- the quality is unmatched, and the device itself is really cool. Thank you very much, Conor!!!
12 Sep 2023
I had the pleasure of working with…
I had the pleasure of working with Erwan, he helped us meet a tight deadline for an upcoming event. His remarkable speed and efficiency were impressive, and the sample box he sent arrived at my doorstep the very next day. I was blown away by the quality of the product and found his recommendation to be spot on. Thanks to Erwan, I am confident that I will use Flashbay again in the future without any hesitation.
Read our 19,301 local reviews or 153,554 global reviews
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Big Boost – Frequently Asked Questions
What is the charging capacity of the Big Boost Power Bank?
The Big Boost Power Bank is available in three capacities: 4400mAh, 6600mAh, and 10050mAh.
What cables are included with the Big Boost Power Bank?
It features neat, retractable cables and comes with Micro-USB, USB‑C, and Lightning adapters.
Does the Big Boost Power Bank have a torch?
Yes, it includes a handy LED torch that can be turned on and off by pressing the status button.
Can I customize the color of the Big Boost Power Bank?
Yes, we offer 8 standard colorway choices, and we can Pantone® match the shell for orders of 250 units or more.
What safety features does the Big Boost Power Bank have?
It includes output over-current and over-voltage protection, high-temperature shutdown, and short-circuit protection.
How long does it take to fully charge the Big Boost Power Bank?
A full charge takes between 4.5 to 11 hours, depending on the capacity.
What is the branding method for the Big Boost Power Bank?
The Big Boost Power Bank is branded using full-color Photo Printing on both sides.
Why is Photo Printing used for the Big Boost Power Bank?
Photo Printing is used to ensure your logo, slogan, or brand imagery is reproduced in clear, eye-catching color, making it perfect for detailed designs.
How does the Big Boost Power Bank optimize charging?
It features auto-adapting charge current to support a variety of devices and optimize charge time, as well as auto-on/auto-standby functionality.
Is the Big Boost Power Bank suitable for different devices?
Yes, with its included adapters, it is compatible with iPhones, Samsungs, and Kindles, making it a versatile charging solution.
