Rank #1 #2 #3 #4 #5
Product
Anker 21W
Anker PowerPort 21W
Read the Review
15W PowerPort
Anker PowerPort Lite 15W
Read the Review
Instapark Mercury 10
Instapark Mercury 10W
Read the Review
X-Dragon 20W
X-Dragon 20W
Read the Review
Renogy E.Flex5
Renogy E.Flex5
Read the Review
Awards  Editors' Choice Award    Best Buy Award    Top Pick Award 
Price $59.99 at Amazon$49.99 at Amazon$35.10 at Amazon$48.99 at Amazon$29.99 at Amazon
Overall Score 
100
0
80
100
0
70
100
0
68
100
0
68
100
0
66
Star Rating
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Pros Efficient, powerful, great value for its size, lightweightInexpensive, easy to use, durable, simple, powerful, lightLight, inexpensive, simple, can charge two devices at onceEfficient, powerful, dual USB ports, large storage pocketInexpensive, lightweight, simple design
Cons Pocket too small to hold extra cords and accessoriesSmall accessory pouch won't hold average smartphoneLow capacity, bulky, heavyHeavy, expensive, difficulties recovering from charge interruptionsNo pocket, no protective cover for panels, single USB port
Bottom Line This 21W is a compact, lightweight panel with unmatched efficiency and charging capabilities.A slightly less powerful version of the Anker 21W, the Anker 15W panel is powerful, portable, and durable.For an inexpensive 10W panel, the Mercury 10W charges devices reliably and effectively, making it our pick for Best Buy.This 20W panel is one of the most powerful panels we tested; on the flip side, it is also one of the heaviest and most expensive.The 5W is a unique, durable, incredibly lightweight panel, great for small charging tasks.
Ratings by Category Anker PowerPort 21W Anker PowerPort Lite 15W Instapark Mercury 10W X-Dragon 20W Renogy E.Flex5
Charge Interruption Recovery - 20%
10
0
8
10
0
8
10
0
8
10
0
8
10
0
5
Charging Speed - 30%
10
0
8
10
0
7
10
0
8
10
0
9
10
0
8
Multiple Device Charging Speed - 20%
10
0
9
10
0
5
10
0
5
10
0
4
10
0
2
Weight & Portability - 20%
10
0
7
10
0
8
10
0
5
10
0
5
10
0
10
Durability - 10%
10
0
8
10
0
7
10
0
8
10
0
7
10
0
8
Specs Anker PowerPort 21W Anker PowerPort Lite 15W Instapark Mercury 10W X-Dragon 20W Renogy E.Flex5
Battery kit? No No Yes No No
Weight (advertised) 14.7 oz 12.5 oz 16 oz 16.6 oz 5.6 oz
Panel Size (watts) 21W 15W 10W 20W 5W
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