Jackery Giant 12000 mAh Portable Charger

Jackery Giant 12000 mAh Portable Charger


Jackery Giant 12000 mAh Portable Charger at a glance

The Jackery Giant 12000 mAh Portable Charger boasts high quality materials and components, all packed into a beautifully designed aluminium body. Whilst not the lightest, or most powerful power bank at this price point – we feel the Jackery’s design, fit and finish more than make up for this.

  • Gorgeous design
  • Impressive battery life
  • High quality materials and components
  • Power button prone to accidental activation if bumped when inside a bag
  • Small number of manufacturing defects have been reported
*Check out the Jackery brand page here.

Capacity & Charging speed

At 12000 mAh, the Jackery Giant 12000 mAh Portable Charger will comfortably handle most charging assignments thrown its way. It should be mentioned that there are some portable chargers which pack a higher power rating for similar money. But having said that, Jackery have opted to use premium Panasonic Grade A Lithium-ion battery cells. This is the very same battery brand used by Tesla, so Jackery are certainly in good company.

It comes with 2 USB ports rated at 1A and 2.1A respectively. This allows you to charge two devices simultaneously – albeit at different speeds. Another handy feature is the ability to charge the Jackery, whilst charging other devices at the same time. In testing we found that it took 10 hours to fully charge the Jackery, which is certainly longer than we’d like. But in most cases I personally charge my power bank overnight – so this is somewhat negated.

What really impressed us was how long this device holds its charge. After juicing it up fully, I was able to top up my phone and Kindle multiple times, and two weeks later this little guy was still going strong!

How many times will the Jackery Giant 12000 mAh Portable Charger charge my device?

iPhone 5s 5 times
iPhone 6s 4.3 times
Samsung Galaxy S6 2.8 times
Samsung Galaxy S7 2.6 times
Samsung Galaxy Note 7 2.2 times
Sony Xperia Z 3.3 times
HTC One M7 3.4 times
iPad Mini 1.2 times
iPad Air 2 1.1 times
iPad Pro 9.7 1.1 times
Samsung Galaxy Tab S2 9.7 1.4 times
*Charging rates are a rounded approximation taking into account average battery condition, environmental factors and natural power degradation

Look and feel

The Jackery Giant 12000 mAh Portable Charger is a great looking little unit. Its sleek, aluminium body is slightly cool to the touch. The fit and finish feel reassuringly sturdy – Jackery has clearly paid attention to the little details. This even extends to the packaging – opening the box for the first time feels like an almost Apple-esque experience.

It is worth pointing out that the smooth aluminium body is quite slippery, we almost dropped it a couple of times. We should also note that the large power button recessed in the leading edge of the unit is unfortunately prone to being knocked, and switched on whilst in transit. Double-tapping the power button turns on the device’s flashlight. I have read reports of people opening their backpack to find the flashlight lit up!

Durability & Construction

The Jackery Giant 12000 mAh Portable Charger is backed up by a 12 month warranty which is always encouraging. Jackery have opted to use high-quality materials such as an aluminium body, and premium Panasonic batteries. This gives the unit a sturdy, solid feel – it feels like it is built to last. Although this does result in a net weight of 10.4 ounces.

There are isolated reports of defective units being shipped, but in most cases we’ve heard of Jackery has offered great customer care and turned unhappy customers into happy ones.


The Jackery Giant 12000 mAh Portable Charger measures 3.1 x 0.8 x 4.3 inches. At a stretch it will fit into your jean’s pocket, but its depth makes it a tight squeeze. However it will happily slot into a purse, or small backpack. At 10.4 ounces there are lighter units with similar mAh ratings to be had. But this is offset by the unit’s premium materials and solid construction.

Technical Details

Manufacturer Jackery
Size 3.1 x 0.8 x 4.3 inches
Weight 10.4 ounces
Type Power Bank
Charging Capacity 12000 mAh
USB ports 2
Colors Black, Gold, Orange, Silver

Final Thoughts


1 thought on “Jackery Giant 12000 mAh Portable Charger”

  1. I love my Jackery battery charger. It does the job quick and well. Glad I bought it. Would do it again

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