This Product
Goertek 25,000mAh
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Awards Best Buy Award Editors' Choice Award  Top Pick Award Best Buy Award 
Price $50 List$74.96 at Amazon$69.99 at Amazon$190 List$39.99 at Amazon
Overall Score Sort Icon
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79
74
70
Star Rating
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Pros Quick to charge, portable size, panel actually works despite small wattageInexpensive, efficient, user-friendly, excels in partly cloudy conditionsEfficient, powerful, great value for its size, lightweightDurable, well-designed, fast charging timesInexpensive, lightweight, portable, charges quickly
Cons Heavy, slow to replenish battery via solarBulky, heaviest weightPocket too small to hold extra cords and accessoriesExpensive, bulkyLow output power, cannot charge multiple devices at once
Bottom Line For a small battery pack with solar capabilities, this is an impressive productFor an inexpensive, easy-to-use and efficient panel, the BigBlue is a no-brainerThis panel is efficient in varying conditions and can charge multiple devicesProvides quick charge times, a durable design, and a roomy mesh pocketThis lightweight 13W panel is able to deliver a steady charge to a single device, but lacks in its ability to charge multiple devices at once
Rating Categories Goertek 25,000mAh BigBlue 28W Anker PowerPort 21W SunJack 25W ECEEN 13W
Charging Speed (30%)
8
9
8
9
8
Charge Interruption Recovery (20%)
8
9
8
7
6
Multiple Device Charging Speed (20%)
9
9
9
9
4
Weight & Portability (20%)
7
5
7
3
9
Durability (10%)
7
7
7
9
8
Specs Goertek 25,000mAh BigBlue 28W Anker PowerPort 21W SunJack 25W ECEEN 13W
Panel Size (watts) 5W 28W 21W 25W 13W
Weight (measured) 19 oz 23.5 oz 17.6 oz 30.1 oz 12 oz
# of USB outlets 3 2 2 2 2
Max USB Output Current (amps per port) 1 amp 2 amp 2 amp 2 amp 2 amp
Battery kit? Yes No No Yes No
Size folded 7" x 3.75" x 1.25" 11.1" x 6.3" x 1.3" 11" x 6.3" x .75" 12.6" x 7.8" x .8" 11.4" x 6.1" x 0.6"
Battery? Yes No No Yes No
Charge tablet? No Yes Yes Yes Yes
Charge laptop? No Yes Yes Yes No
Panel Type Mono-crystalline PET Polymer Mono-crystalline ETFE Mono-crystalline
Size opened 7" x 3.75" x 1.25" 33.1" x 11.1" x 0.2" 26.3" x 11.1" x 0.2" 24.6" x 7.8" x .8" 11.4" x 14.3 x .15"
Battery input (Volts / Amps) 5V 2A N/a N/a 5V 2A N/a
Charge capacity (mAh) 25,000mAh N/a N/a 10,000mAh (x2) N/a
Charge iPhone/smartphone Yes Yes Yes Yes Yes
Direct USB Plug? Yes Yes Yes Yes Yes
Daisy Chain? No No No Yes No
12-Volt connection No No No Yes No
Warranty 1 year 2 years 18 months 1 year 30 day return
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