Griffin Reserve Power Bank - Review 2022

If you want to charge multiple devices when you're on the get, you need a fill-in battery that has plenty of juice and more than one port. The xviii,000mAh Griffin Reserve Power Bank satisfies both of those requirements, and does so for a relatively affordable $44.99. That said, it isn't much to look at and it lacks features like fast charging, making the Anker Power Core Ii 20000 a stronger pick.

Design and Features

The Reserve is a weighty black or gray plastic slab. The polycarbonate trounce feels sturdy, and according to Griffin it's been tested confronting drops, though it doesn't have whatsoever official ruggedization rating and so I wouldn't recommend abusing it besides much.

In terms of size, the Reserve is virtually what yous'd expect for the chapters, at half dozen.3 past 3.2 by 0.7 inches (HWD) and 13.half dozen ounces. The PowerCore Ii 20000 is pretty close, at 6.7 past 2.five past 0.eight inches, but lighter at 11.7 ounces. Neither bombardment is particularly pocketable—for that you'll need a lower-chapters cell like the Xiaomi Mi Power Depository financial institution Pro (5.1 past 2.nine by 0.v inches, 7.0 ounces).

On one side you have Griffin'due south logo and a set of iv white LEDs to indicate charging status. On the summit edge you accept the power/status button, the micro USB charging port to charge the bombardment itself, a 5V/1A USB output, and a 5V/two.4A USB output. Pass-through charging is supported, assuasive y'all to charge the Reserve while too charging two other devices. And Griffin includes a micro USB cable you tin employ to accuse the battery or other devices.

Griffin Reserve Power Bank The downside is tedious charging speed. The 5V/1A USB port is fine for powering devices with smaller batteries, like wearables, simply y'all actually want both ports running at 5V/ii.4A for charging tablets of phones. We measured the output of the 5V/two.4A port at ca slightly slower 4.9V/two.2A when charging the Apple iPhone X, and 5.16V/0.6A with diverse Android phones.

Operation and Conclusions

The Reserve has plenty of power for charging the boilerplate smartphone upwards to seven times, and almost tablets close to three. For testing, we connected the battery to an Apple iPad and clocked 30 hours, 4 minutes of video streaming over Wi-Fi at maximum brightness. That's really a flake improve than the 20,100mAh Anker PowerCore Ii (28 hours, five minutes), perhaps due to power efficiency differences.

At $45, the Griffin Reserve Ability Bank is a reasonably affordable portable battery that'due south capable of charging more than than one device at the same time. But it does so at slower speeds than other batteries. The Anker PowerCore II is lighter and faster, making it a better pick for the price. The iMuto Portable Charger X6 Pro, meanwhile, has an fifty-fifty college capacity and adds a USB-C port to the mix, making it our Editors' Choice for large batteries. If you're primarily interested in portability, however, the Xiaomi Mi Power Banking concern Pro is our favorite bombardment yous can easily fit in your pocket.