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Monitoring & chargers
BigBlue SolarPowa 28W USB Solar Charger (with ammeter)
The BigBlue SolarPowa 28 is an entry-level 28-watt folding USB charger for phones and small devices, not system equipment: one USB-A and one USB-C port at up to 2.4 A each, a built-in ammeter, and 1.5 pounds folded.
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Skip it if you want to charge anything bigger than a phone or tablet; 28 watts over USB is the ceiling. Skip it if you need to feed a power station; the output is USB only. The Anker SOLIX PS100 is the 100-watt step up.
Specs
| Output | 28 W |
|---|---|
| Ports | 1 USB-A, 1 USB-C; 5 V / 2.4 A per port, 4 A shared |
| App | No |
| Foldable | Yes |
How it compares
| Product | Output (W) | Ports | App | Foldable | Tier | What it doesn’t include |
|---|---|---|---|---|---|---|
| This pageBigBlue SolarPowa 28W USB Solar Charger (with ammeter) | 28 W | 1 USB-A, 1 USB-C; 5 V / 2.4 A per port, 4 A shared | No | Yes | Entry | |
| Anker SOLIX PS100 Solar Panel (100W foldable) | 100 W | XT60i; 2 x 8.2 ft solar cables and 1.6 ft XT60i cable included | No | Yes | Mid | The Anker 625 (B09V7HX61T) is unavailable; the 625 was rebranded SOLIX PS100. Backup link: https://amzn.to/4zP2C9e |
| Emporia Vue Gen 3 Energy Monitor (with solar/net-metering) | Yes | Entry |
What it doesn’t include
- No app
Put your own panels into the soiling-loss calculator to see what dirty glass costs you each year. Then read 5 Signs Your Solar Panels Need Cleaning (The “Eye Test” Guide).
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