The world's most in-depth and scientific reviews of outdoor gear

Renogy 15,000mAh Review

An efficient, compact battery pack with a 2W solar charger on it; a top performer.
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Price:  $35 List | $29.99 at Amazon
Pros:  Relatively lightweight for panel type, inexpensive, charges devices efficiently
Cons:  Ineffective if relying only on solar for power, less durable than other battery packs
Manufacturer:   Renogy
By Jane Jackson ⋅ Senior Review Editor  ⋅  Nov 11, 2019
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69
OVERALL
SCORE


RANKED
#3 of 14
  • Charging Speed - 30% 7
  • Charge Interruption Recovery - 20% 5
  • Multiple Device Charging Speed - 20% 7
  • Weight & Portability - 20% 9
  • Durability - 10% 6

Our Verdict

One of our favorite solar battery packs we tested, the Renogy 15,000mAh is a simple, capable battery pack that efficiently charged our devices. The battery pack is compact, lightweight, and simple in its design. The top of the battery is covered in solar cells, with more surface area of solar cells than the other small battery packs in this review. This minor feature means that the Renogy charges a little bit faster when placed in the sun (compared to its other 2W competitors). That said, it takes its time while charging in the sun, and the solar function performs best as a back-up to the battery. It's easy to leave this small panel on the dashboard or in a window to trickle charge the battery over a long period, but don't expect the Renogy to refill quickly relying solely on solar power.

We loved this panel for traveling, as it fits in our carry-on luggage easily and kept our phone charged when we were away from power outlets in the airport or train station. We also found it handy to use when traveling abroad, since it eliminated the need to find a converter for a power outlet.


Compare to Similar Products

 
This Product
Renogy 15,000mAh
Awards  Editors' Choice Award Best Buy Award   
Price $29.99 at Amazon$59.99 at Amazon$39.99 at Amazon$39.99 at Amazon$114.99 at Amazon
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Pros Relatively lightweight for panel type, inexpensive, charges devices efficientlyInexpensive, efficient, user-friendly, excels in partly cloudy conditionsInexpensive, lightweight, portable, charges quicklyLarge storage pocket, comes in multiple colors, durablePowerful, works well in partial sun, cheaper than other laptop compatible options
Cons Ineffective if relying only on solar for power, less durable than other battery packsBulky, heaviest weightLow output power, cannot charge multiple devices at onceHeavy, bulkyBulky, heavy, hard to set up, complicated adapters for laptop charge
Bottom Line An efficient, compact battery pack with a 2W solar charger on it; a top performer.We were impressed by its ability to charge our gadgets quickly and reliably; its reasonable price is the cherry on top.This panel impressed us with its fast charging speeds and its lightweight, portable design.Well designed, comes in multiple colors, and is durable - but also bulky.The X-Dragon 40W is the largest panel we tested and works relatively well for charging a laptop, though it is cumbersome and heavy.
Rating Categories Renogy 15,000mAh BigBlue 28W ECEEN 13W PowerGreen 21W X-Dragon 40W
Charging Speed (30%)
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7
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9
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10
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7
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9
Charge Interruption Recovery (20%)
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5
10
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9
10
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6
10
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7
10
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8
Multiple Device Charging Speed (20%)
10
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7
10
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9
10
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4
10
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6
10
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7
Weight & Portability (20%)
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9
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Durability (10%)
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6
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7
Specs Renogy 15,000mAh BigBlue 28W ECEEN 13W PowerGreen 21W X-Dragon 40W
Panel Size (watts) 2W 28W 13W 21W 40W
Weight (measured) 9.5 oz 23.5 oz 12 oz 20.3 oz 37 oz
# of USB outlets 2 2 2 2 1
Max USB Output Current (amps per port) 2 amps 2 amp 2 amp 2 amp 2.8 amps
Battery kit? Yes No No No No
Size folded 6.3" x 3.1" x 0.7" 11.1" x 6.3" x 1.3" 11.4" x 6.1" x 0.6" 11.4" x 6.8" x 1.3" 10.43" x 6.3" x 2.76"
Battery? Yes No No No No
Charge tablet? No Yes Yes Yes Yes
Charge laptop? Npo Yes No No Yes
Panel Type Mono-crystalline PET Polymer Mono-crystalline Mono-crystalline PET-Polymer
Size opened 6.3" x 3.1" 0.7" 33.1" x 11.1" x 0.2" 11.4" x 14.3 x .15" 27.6" x 11.4" x 0.2" 35.2" x 18.1" x 0.04"
Battery input (Volts / Amps) 5V 2A n/a n/a n/a n/a
Charge capacity (mAh) 15,000mAh n/a n/a n/a n/a
Charge iPhone/smartphone Yes Yes Yes Yes Yes
Direct USB Plug? Yes Yes Yes Yes Yes
Daisy Chain? No No No No No
12-Volt connection No No No No Yes
Warranty 1 year 2 years 30 day return 1 year 2 year

Our Analysis and Test Results

With relatively fast charging speeds, the Renogy 15,000mAh is a capable, compact panel that can keep devices going over a long weekend or when traveling.

Performance Comparison


The Renogy is shown here charging our Kindle while car camping.
The Renogy is shown here charging our Kindle while car camping.

Charge Interruption Recovery


This rating metric is a bit challenging to apply to small battery packs with integrated panels, like the 15,000. To attempt to use this battery pack as you would, a traditional solar charger would result in frustration, as a 2W panel doesn't have the same charging capabilities as a 40W panel. We found it best to trickle charge the 15,000 via the power of the sun, when we were able to leave it out for hours. When taking this approach, charge interruption isn't an issue because your device will always be getting power from the battery itself, which is, in turn, getting refilled from the sun.

The size of this panel equates to slower charging times  even in the most optimal solar conditions.
The size of this panel equates to slower charging times, even in the most optimal solar conditions.

Charging Speed


The manufacturer recommends over 75 hours of sun exposure to charge this battery. This information is good to keep in mind when considering the Renogy, as solar is more of a back-up method of charging. We found it best to charge the battery at home fully and then rely on solar power to trickle charge our devices when out and about. That said, the Renogy does charge quite fast, and it charged up our Google Pixel 3 phone from 0% to 23% in 30 minutes; we also got five full charges out of the Renogy before draining the battery.

The Renogy was efficient when charging this small lantern - another reason why this panel is a great addition to any car camping trip.
The Renogy was efficient when charging this small lantern - another reason why this panel is a great addition to any car camping trip.

Multiple Device Charging Speed


With 15,000mAh of power, the 15,000 from Renogy has no trouble charging two devices at once, as long as the battery is mostly full. We were able to charge our Pixel 3 and a Kindle a decent amount (the phone 5% and the Kindle 9%) over a half-hour period.

Here  we utilize both USB ports on the Renogy to charge up our devices in the middle of the day with optimal solar conditions.
Here, we utilize both USB ports on the Renogy to charge up our devices in the middle of the day with optimal solar conditions.

Durability


We were impressed with the durability and construction of the Renogy. The hard plastics used in the construction seem to be a little bit less durable than the battery packs that are encased in soft silicone. That said, we had no issues when it came to the durability of this panel, even when leaving it in the sun for hours.

The Renogy is decent when left sitting in the sun for long periods of time  but more efficient models can be found in our fleet.
The Renogy is decent when left sitting in the sun for long periods of time, but more efficient models can be found in our fleet.

Weight and Portability


It is in this metric that the 15,000 stands out against its competitors. Weighing in at 9.5 ounces, the Renogy is the lightest of the three battery pack/solar chargers in this review. It combines excellent output power with a lightweight, sleek profile, making it our go-to for a battery pack with an integrated solar panel.

The Renogy 15 000mAh is a great panel to bring traveling - it kept our small devices charged without taking up too much space in our kit.
The Renogy 15,000mAh is a great panel to bring traveling - it kept our small devices charged without taking up too much space in our kit.

Value


The 15,000 is a reasonable investment if you are looking for a battery pack. We would recommend buying this product if you plan on fully charging it indoors and using the solar panel as a trickle-charge function. Don't buy this panel expecting it to charge your devices in the sun at a rapid rate.

The Renogy is about the size of a small journal or book  making it quite portable.
The Renogy is about the size of a small journal or book, making it quite portable.

Conclusion


Its simple design, charging ability, and low overall weight makes the Renogy 15,000 our go-to for a small, portable battery/panel combination, as it kept our devices charged on train rides and in the airport. Like the other battery pack/panels in this review, it takes a significant amount of time (over five hours) to see any increase in battery level using only the solar panels, but it is effective to trickle charge devices with the panel in the sun. It is also reasonably priced and durable, making it a good purchase overall.


Jane Jackson