Home Gadgets Quantum QHM 20000 mAh Power Bank Review

Quantum QHM 20000 mAh Power Bank Review

Quantum Hi-Tech Merchandising Private Limited, also known as QHMPL which is producing consumer electronics, security solutions & IT hardware/peripherals, since 1992. The company has recently launched a 20,000mAh power bank with LED display. I have been testing the power bank almost a month now and here is my detailed review of the Quantum QHM 20000 mAh Power Bank.

Quantum QHM 20000mAh Power Bank (3)

Quantum QHM 20000 mAh Power Bank Review:


The design of the Quantum QHM 20000 mAh has a solid plastic built case and weighs about 500 grams, which is little heavy and not much for a 20000 mAh capacity.

On the front side, we have dark black OLED display to indicate the charging status and power levels.

Quantum QHM 20000mAh Power Bank (1)

On the top, we have the power button, Micro USB charging port, 2 output USB ports and a LED light.

Quantum QHM 20000mAh Power Bank (2)

Technical Specifications:

Dimensions: 15.6 x 8 x 2.3 cm (Power Bank)
Capacity: 20000 mAh
Input: DC 5V/2A (MAX)
Output: DC 5V/2A (MAX)
Life Cycle : > 500times
Operation : Plug & Play
Battery Type: Li-ion A Grade
Output Power: 10W (5V/2A MAX)
Input Power: 10W (5V/2A MAX)
Available Colours: Black, White

Usage and Performance:

The power bank took approximately 8 to 10 hours to charge completely and there is an OLED screen which displays the percentage of the Charge available like 20 / 50 / 75 / 100. I have tried charging my mobile devices and other gadgets. Well, On a complete charge, the power bank is capable of delivering a full charge for a smartphone with 5000 mAh capacity for approximately 3.5 to 4 times. Also, there is a LED torch light available in the power bank which is useful at the night times and while you travel. The power bank is suitable for most digital devices with DC 5V input, such as tablet PC, smartphones, iPhone, iPad, MP3, MP4, GPS, PSP, Bluetooth speakers, etc., The power bank performs pretty decently. Well, the discharge rate would improve after a few charging cycles.

What’s in the Box:

  • Power Bank
  • Micro USB Cable
  • Lighting Cable

Price and Availability:

The Quantum QHM 20000 mAh Power Bank is priced at Rs.2990 in India and you can buy it on various online and offline retail stores.

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