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INIU B1-B5 Review

This portable charger has a large display and a USB-C port but we weren't too impressed with its performance in our capacity test
INIU B1-B5
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Price:   $28 List | $32.99 at Amazon
Pros:  Large display, USB-C port, fast charging capable
Cons:  Large, poor performance in our recharge test
Manufacturer:   INIU
By David Wise and Austin Palmer  ⋅  Jan 19, 2021
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39
OVERALL
SCORE


RANKED
#11 of 11
  • Portability - 40% 3
  • Charging Efficiency - 30% 3
  • Added Convenience - 20% 6
  • Recharge Time - 10% 6

Our Verdict

Overall, we weren't particularly thrilled with the performance of the INIU BI-B5. While it does have some unique features, like a large display, integrated flashlight, and compatibility with some of the newest fast-charging standards, it delivered mediocre results in our resistive load capacity test and is a bit large and clunky to carry around.

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INIU B1-B5
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INIU B1-B5
Awards  Editors' Choice Award Editors' Choice Award Best Buy Award  
Price $28 List
$32.99 at Amazon
$25 List
$29.99 at Amazon
$20.00 List
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Check Price at Amazon$22 List
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Pros Large display, USB-C port, fast charging capableInexpensive, super easy to carry in a pocket, short recharge timeLightweight and portable design, good battery capacity, inexpensiveGreat value, USB-C/microUSB charging input, dual outputsInexpensive, small and portable design
Cons Large, poor performance in our recharge testNo integrated cables, can only charge a single device at a timeNo integrated cablesTakes a long time to recharge, not the highest power outputLimited additional features
Bottom Line This portable charger has a large display and a USB-C port but we weren't too impressed with its performance in our capacity testIf you want a bare-bones portable charging solution without breaking the bank, this is the battery for youIf you are looking for a battery bank with a larger capacity, then this is one of our favoritesIf you are searching for a great value, then we strongly recommend checking out this set of power packsThis basic option is a great choice if you want a highly portable charger and don't care about other features
Rating Categories INIU B1-B5 Anker PowerCore 5000 INIU Portable Charg... 2-Pack Miady 10000 Anker PowerCore Sli...
Portability (40%)
3.0
9.0
8.0
7.0
8.0
Charging Efficiency (30%)
3.0
6.0
6.0
6.0
5.0
Added Convenience (20%)
6.0
3.0
6.0
5.0
3.0
Recharge Time (10%)
6.0
10.0
6.0
4.0
7.0
Specs INIU B1-B5 Anker PowerCore 5000 INIU Portable Charg... 2-Pack Miady 10000 Anker PowerCore Sli...
Claimed Capacity 20,000 mAh 5,000 mAh 10,000 mAh 10,000 mAh 10,000 mAh
Dimensions 5.25" x 2.50" x 1.00" 4.20" x 1.30" 5.19" x 2.75" x 0.60" 5.49" x 2.64" x 0.63" 5.82" x 2.63" x 0.62"
Measured Weight 12.25 oz 4.71 oz 6.88 oz 7.69 oz 7.13 oz
Measured Charge Time 360 min. 150 min. 300 min. 405 min. 315 min.
Output 1 Power Delivery (USB-C):
5V / 3A
9V / 2A
12V / 1.5A
5V / 2A DC5V / 3A(Max) 5V / 2.1A 5V / 2.4A
Output 2 USB-A
4.5V / 5A
5V / 4.5A
9V / 2A
12V / 1.5A
N/A DC5V / 3A(Max) 5V / 2.1A N/A
Output 3 USB-A
4.5V / 5A
5V / 4.5A
9V / 2A
12V / 1.5A
N/A DC5V / 3A(Max) N/A N/A
Output 4 N/A N/A N/A N/A N/A
Input USB-C:
5V / 3A
9V / 2A
12V / 1.5A
5V / 2A USB-C:
5V / 3A
Micro USB/USB-C: 5V/2A 5V / 2A
Model BI-B5 A1109 BI-B1 TPB21C A1229

Our Analysis and Test Results

The INIU BI-B5 does have a unique feature in that it includes a separate USB-powered flashlight if you need even more illumination than what the along with the integrated LED can provide.

Performance Comparison


This battery includes a few extra convenience features.
This battery includes a few extra convenience features.
Credit: Laura Casner

Portability


Our first series of tests for these chargers focused on how portable they are. We based scores on the size and weight of each charger, as well as how comfortable they are to carry around in a pocket. The INIU BI-B5 is one of the larger and heavier chargers of the group, earning it a below-average score.

This INIU BI-B5 measures in at 5.25 inches long by 2.5 inches wide by 1 inch thick. It tips the scales at just over 12 ounces, making it considerably heavier than average.

Overall, we don't think this charger is comfortable to carry around in a pocket. It's about the same size as three smartphones stacked up and is definitely noticeable in the front or back pocket of a typical pair of pants. It is particularly uncomfortable to sit down while the INIU BI-B5 is in a back pocket.

Capacity


Next, we looked at the charging capacity of each portable charger, using both a resistive dummy load and by looking at the number of device charges we could get out of each power pack compared to the manufacturer's claims. Unfortunately, the INIU BI-B5 again scored quite below average.

The INIU BI-B5 is rated as having a 20,000 mAh capacity but we got considerably less than that in our test. We set the dummy load to a 2.4 amp draw and the INIU BI-B5 was completely depleted after 2 hours and 22 minutes. This meant it only provided 5699 mAh or 28% of its rated capacity.

We like the large digital display on this portable charger.
We like the large digital display on this portable charger.
Credit: Laura Casner

The BI-B5 did much better in our device charging tests. We were able to completely charge a Samsung Galaxy S8 5 times, outperforming the claims of 4 charges made by other 20,000 mAh battery packs.

Added Convenience


Our next metric focused on any other features these chargers might have that make them more convenient to use, such as if you can charge multiple devices simultaneously, if there is a flashlight, and if there are any integrated cables/plugs. We also looked at the warranty period for each charger. The INIU BI-B5 did quite well, earning a score just above-average.

The included accessories with this battery.
The included accessories with this battery.
Credit: Laura Casner

This portable power pack can charge up to three devices at once with its pair of USB-A ports and a single USB-C port. It has a built-in flashlight, as well as a USB-powered brighter light. It also has a large digital readout that shows the battery level.

Recharge Time


Our last metric scored each charger on how long it took to recharge, comparing the manufacturer's claims with our measured results. The INIU BI-B5 again did alright, earning a score just above average.

This battery took around 360 minutes using the included USB-A to C cable plugged into a typical charger, which aligns quite well with the manufacturer's claims. They state that the INIU BI-B5 should take around 6 hours to charge with an 18-watt power adapter, 10 hours with a 2 amp charger, and 20 hours with a 1 amp charger.

This battery can charge multiple devices at the same time.
This battery can charge multiple devices at the same time.
Credit: Laura Casner

Value


While this is one of the lower-cost power packs out there, there are other models that performed considerably better and we would recommend those to anyone shopping on a budget.

Conclusion


While the INIU BI-B5 does have some interesting and unique features, its overall performance makes us reticent to recommend it and we found other portable chargers that we vastly preferred.

All in all, we weren't overly impressed with the performance of this...
All in all, we weren't overly impressed with the performance of this portable charger.
Credit: Laura Casner

David Wise and Austin Palmer

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