Anker 625 Solar Panel 100W vs BigBlue 28W USB Solar Charger
We compare the Anker 625 Solar Panel 100W and BigBlue 28W USB Solar Charger head-to-head on performance, features, value, and more. Here's which one wins.
Anker 625 Solar Panel 100W
Scored 9.3/10 in our testing
Anker 625 Solar Panel 100W
Best high-power solar charger — Anker 625 100W for base camp and power station charging
BigBlue 28W USB Solar Charger
Best backpacking solar charger — BigBlue 28W with three USB ports and best weight-to-watt ratio
Score Breakdown
| Anker 625 Solar Panel 100W | Category | BigBlue 28W USB Solar Charger |
|---|---|---|
| 9.5/10 ✓ | Performance | 9.3/10 |
| 9.3/10 ✓ | Features | 9/10 |
| 9/10 | Ease of Use | 9/10 |
| 8.8/10 | Value | ✓ 9.5/10 |
| 9.3/10 ✓ | Overall | 9.2/10 |
Specs Comparison
| Anker 625 Solar Panel 100W | Spec | BigBlue 28W USB Solar Charger |
|---|---|---|
| 100W — monocrystalline | Rated Output | 28W — SunPower cells |
| USB-C + USB-A | Ports | 2x USB-A + 1x USB-C |
| 23% cell efficiency | Efficiency | 1.3 lbs |
| 5.0 lbs | Weight | 4-panel foldable design |
| Anker power stations + direct device charging | Compatible | Digital ammeter display |
Anker 625 Solar Panel 100W
Pros
- + 100W rated — 62-68W real-world output
- + 23% cell efficiency — highest tested
- + Charges power stations and laptops
- + USB-C + USB-A direct device charging
Cons
- − 5 lbs — too heavy for backpacking
- − Briefcase-sized when folded
- − Expensive — investment for serious use
BigBlue 28W USB Solar Charger
Pros
- + 1.3 lbs — lightest high-output panel
- + SunPower cells — highest efficiency per size
- + Digital ammeter for real-time output monitoring
- + Three USB ports for multiple devices
Cons
- − No integrated battery — direct charge only
- − Thin construction — less rugged than Goal Zero
- − No USB-C PD — standard 5V only
Our Verdict
Based on our scoring, the Anker 625 Solar Panel 100W comes out on top with an overall score of 9.3/10. The Anker 625 is the most powerful portable solar panel in this guide — 100W of monocrystalline cells that pair with Anker power stations for serious off-grid energy. In our testing it produced 62-68W in direct sun — enough to charge a power station, laptop, or multiple phones simultaneously. The 23% cell efficiency is among the highest available in portable panels. At 5 lbs it is not a backpacking panel, but for car camping, overlanding, and emergency preparedness it delivers real power.
Buy the Anker 625 Solar Panel 100W on AmazonRead the full Best Solar Chargers 2026 guide for complete reviews of all 4 products.