The Kinkoo Infinite One portable power bank offers a stylish, high quality exterior — with premium pricing at $69.50 from the Kinkoo website or Amazon. Power banks – also known as portable batteries – charge smartphones, tablets and other micro-USB equipped devices, while on-the-go. Recharging while traveling fits squarely into the One’s market niche. The Infinite One’s sleek, angular profile makes it easy to toss in a purse, backpack or even your front pocket. It manages to offer an 8,000 mAh battery, despite its petite size. However, the competition in the power bank market is both inexpensive and diverse.
We’re giving this review unit away, so read on to find out how to submit your entries.
The 8,000 mAh portable backup market segment overflows with well-reviewed products. For example, the 4.4-star rated Onite 8,000 mAh portable charger includes dual USB output, in addition to coming in at $18.99 via Amazon. Another adversary, the Mpow 8,000 mAh charger, at 4.3 stars, costs $25.99. I confess to not knowing whether these chargers are OEM rebrands or uniquely designed products. Additionally, neither company advertises their batteries’ manufacturers. The sharp-eyed consumer should know these specifications. Batteries from brand-names tend to perform more reliably than from off-brand companies. Good examples include Panasonic, Samsung and Sony. A bad example includes companies such as UltraFire.
I also could not find reliable information on the particular battery used inside the Infinite One. I do know this: An 8,000 mAh lithium polymer (LiPo) battery is simply a gel pack, containing lithium-ion polymer. Unlike lithium-manganese batteries, LiPo batteries do not come in a metal shell, so on unregulated devices there always exists the potential for catastrophe. Fortunately, the Kinkoo Infinite One includes various countermeasures against overcharging. The majority of competitors also include protection against explosion and fire. The key selling point of the Infinite One, however, is that it includes a 15-month warranty, rather than the 1-year (or less) industry standard. Considering that batteries relatively rapidly, warranties offer a strong means of product differentiation.
I’ve also reviewed devices from RAVPower, including the innovative WD01, which combines wireless file storage with a 3,000 mAh battery. Another great battery bank, with attached storage: The Corsair Gauntlet.
What You Get
- Instruction manual
- 200 mm microUSB to USB cable
- 1,000 mm microUSB to USB cable
- Felt carrying case
- 8,000 mAh LiPo power bank
Styling and Aesthetics
The Kinkoo Infinite One portable charger features a beautiful white, cross-hatched, textured plastic shell, with angular surfaces. Describing the exterior case as “grippy” does it a disservice. The Kinkoo charger offers the greatest grip out of all devices that I’ve seen, including tablets and smartphones. While the textured surface might attract dirt and grime, overall, the benefit greatly surpasses the potential negatives.
It includes two ports – a micro-USB and a regular USB. Note, though, that users cannot simultaneously charge the Kinkoo and a device.
- Amperage: 2A input; 2.5A output
- Safety features: Automatic shut off, over-discharge, short circuit, temperature protection
- Warranty: 15 month
- Dimensions: 135 (l) x 67 (w) x 11 (h) mm
- Weight: 162 grams
- Battery: 8,000 mAh LiPo, unknown manufacturer
Living with the Kinkoo Infinite One
The Kinkoo’s 11mm thick profile easily slips into pockets, purses and more. I carried it with me on bike rides and to coffee shops, both with grace. It not only looks good, but it feels good. I found myself often running my fingers over the textured surface. It’s difficult criticizing its elegant and minimal design. The Infinite One remains the best looking and feeling battery banks on today’s market.
The Kinkoo’s lithium polymer (LiPo) battery, rated at 8,000 mAh, charges devices using either a short or long cable. A simple rule of thumb regarding cable length: Longer cables provide less efficiency than shorter ones as the charge attenuates when transferred across the metal wires of a cable. The longer the distance traveled, the greater the loss. Some chargers automatically adjust to use cables of varying length and others do not, although I have yet to see a charger that can use any length of USB cable for charging purposes. That said, the Kinkoo can use most USB cable lengths longer than the 20cm cable included with it. I also tested whether it continued to charge over third-party cables of varying lengths. In short, it automatically shuts off on any cable shorter than 20cm.
Batteries tend to perform best when at maximum charge. As they approach exhaustion, the charging time tends to slightly increase. Additionally, faster charging oftentimes results in higher battery pack temperatures. So how did the Kinkoo Infinite One perform?
Regarding its charging performance, I’ve tested it on three devices, recharging them from approximately 50% to 100% (I never drain my devices completely): A Nexus 7 (2013), a Nexus 5 and an LG G Pad 8.3. The charge times hold up to Kinkoo’s advertising. The battery capacity, at 8,000 mAh, provided could provide at least 7,000 mAh to my devices. That said, using the short charging cable, here’s my results:
- To charge a 4,325 mAh Nexus 7 from 50% to 100%, the Infinite One took approximately 1 hour and 30 minutes. Charging from 0% to 100% should take slightly less than 3 hours. However, Android’s battery percentile indicator isn’t 100% accurate, so my numbers will possess a small degree of inaccuracy. That said, the Infinite One recharged the Nexus 7 at around 24 mAh per minute.
- Recharging an a 4,800 mAh LG G Pad from 42% to 100% took 2 hours and 10 minutes. That’s around 21 mAh per minute.
- Recharging a 2,300 mAh Nexus 5, starting at 35%, took 1 hour and 27 minutes. That comes out to around 1,400 mAh. That’s around 17 mAh per minute.
I should also note that I started off charging the Nexus 7, then the G Pad and finally the Nexus 5. As many portable chargers lose power, they also charge more slowly. I don’t understand the physics behind this, though, so I cannot furnish our readers with a better explanation as to why.
The entire time the Infinite One spent charging, the device felt no more than warm near the USB port. I’ve used battery packs that don’t have protection built in – if using the wrong length cable, the battery bank gets incredibly hot. This scenario can lead to the destruction of both your battery and the device that it charges. To my knowledge, virtually all modern battery banks include safety features against short length cables, fortunately. But always check before purchasing, as it is a necessary feature.
How do I win the Kinkoo Infinite One?
You may enter by submitting your name and email address. You’ll receive one entry simply by doing so.
After that, you’ll also be offered various methods to earn additional entries. They range from sharing a link to this giveaway on social networks; to commenting or visiting a specific page. The more you participate, the higher your chances of winning! You will receive 5 additional entries into the giveaway for every successful referral via your shared links.
Congratulations, Robert Ocheltree! You would have received an email from firstname.lastname@example.org. Please respond before August 9 to claim your prize. Enquires beyond this date will not be entertained.
This giveaway begins now and ends Friday, July 11. The winner will be selected at random and informed via email. View the list of winners here.
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