Accessories & power
BigBlue SolarPowa 28
BigBlue
28 W four-panel folding USB solar charger with a built-in ammeter showing the current.
Where to buy in
What you get
A 28-watt folding charger with four SunPower panels and USB outputs. A small ammeter on the panel shows how much current is flowing. SmartIC adjusts the output to each device and four hooks let it hang from a pack.
- 28 W four-panel foldable USB solar charger
- Built-in digital ammeter shows the charging current
- SmartIC adjusts output per device
- 21 oz with four clip hooks for hanging
Pros and cons of the BigBlue SolarPowa 28
Pros
- 28 watts from four folding panels with SunPower cells.
- Built-in ammeter shows the charging current at a glance.
- Wirecutter's budget pick and tested by Treeline Review and Popular Mechanics.
Cons
- Ports and ammeter are not water-resistant even though the panels carry IPX4.
- Port layout varies by version so check which USB ports a listing shows.
Specs
- Outputs
- USB up to 5V/2.4A per port, 4A max combined (SmartIC)
- Solar panel
- 28 W
- Weight
- 21 oz (595 g)
Why it scores 7.6
7.6/10
Shortlist score. How it is calculated
Emergency features
- Works with common radios or phones
- Solar or crank charging
- Capacity listed by the maker
Search demand
Too few Google searches by model name to measure.
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