50000mAh power banks for big speakers or laptops

Our 50000mAh power banks can charge and discharge in the same time.

Compatible with Laptop/Mobile Phones/Tablet PC/Advertising Equipment/Portable Printer/Portable Scanner/POS...

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Product Detail

20000mAh power banks for big speakers or laptops


Model No.


Capacity 3.7V, 50000mAh
Input Voltage 19V, 2.0 A
Output Voltage 5v/12v/16v/19v(optional)
Output Current 2A(5V),4A(12V/16V/19V)
Can charge and discharge in the same time.
Compatible with Laptop/Mobile Phones/Tablet PC/GPS Tracker/Advertising Equipment/Portable Printer/Portable Scanner/POS...
Standard Accessories Adapter--1pcs
Output Cable--1pcs
Laptop connectors---10pcs
Size 198(L)*124(W)*18(H)mm
Weight 1050g


Full charging time 5-6 hours


This product can be set at different and adjustable DC voltage levels 5V,12V, 16V which are clearly displayed on an LED screen under the battery percentage.

When charging for laptops, first, you press the bottom for two seconds, and then double click the power button to adjust the voltage to what your laptop needs to start charging.

USB1, USB2 outports can charge 4Amp Max and support quick charge digital devices.

USB TYPE-C output charges at a Max of 4Amp and can charge devices at 5V/12V/16V without having to adjust anything your device will automatically decide what voltage is best to charge the device.

Charge multiple devices at the same time, example you can have your laptop charging at 20V and then an iPhone off one of the USB outlets simultaneously.

Battery capacity indicator Press the button for 2 seconds, the screen will light up to show the voltage and the number of remaining capacity.


Dual Output Meets All Charging Needs
For a huge output and for devices to quickly power up, enjoy a combined 2A(5V) ,4A(12V/16V/19V)output that meets the needs of smartphones and tablets. Each of the two iSmart ports provides the optimized charging experience for your device while allowing 5V/2A output per port.
Cuts Your Recharge Time in Half
Nobody likes waiting around to recharge their portable charger. When using a 2A or 4A adapter, the power bank recharges in a speedy 2 to 3 hours. That means you are saving at least 50% on the recharge time compared to using slower 1A adapters.
Thoughtful and Detailed Design
To make things convenient and to minimize tangled wires, all three USB ports are grouped together for easy access.
Trusted Safety and Protection
When dealing with power, safety is paramount. To keep the charger and your devices secure, enjoy four different safeguards, which include voltage surge, over charge/discharge, and high temperature protections.

Product Display

High capacity power banks

About Ecsson

Shenzhen Ecsson Technology is a high-tech company that focuses on R&D, design, manufacturing and marketing of new solar energy applications with an independent R&D team.

Our main products are portable power banks which are compatible for mobile devices made by world-renowned manufacturers (smart phones and tablets like iPad/iPhone, Samsung, HTC. Blackberry, traditional mobiles and laptops) as well as other digital devices (digital camera, pocket game console. E-book etc).


Package and shipping

1. Sample: delivery within 3 days

2. Mass production: delivery within 15 days

3. Over 6 years shipment experience by sea or by air, to save your money


1. Q: OEM OR ODM accepted?

A: Yes, we can do OEM&ODM. Logo on the power banks or solar panels are available.

2. Q: Do your products have certifications?

A: Yes, We are the assessment supplier by BV and TUV and our products have the certificates of CE, RoHs, FCC, IEC.

3. Q: What is the annual capacity production of your company?

A: Our factory building covers an area of 30,000 quare meters. And the annual output exceeds 80MW.

4. Q: How long is the warranty of your products? How to guarantee the after-sale services?

A: We guarantee most of our products for one year, the solar panel for 3 years .And we will prepare 3‰ to 5‰ accessories for easily damaged parts.

5. Q: Can I get some samples?

A: Yes,of course. We are honored to offer you samples,And usually samples can be ready in 3-5days.

6. Q: How to do if any quality problems on our side in the warranty time ?

A: At First, take pictures or videos as proof and send to us.We will replace new ones for free.

7. Q: What kind of company of yours ?

A: We are a manufacturer with more than 300 employees supplying directly.

8. Q: Still have questions?

A: You can click CONTACT US to send us email with your questions, we will be in contact with you within 24 hours.

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