Hiluckey Solar Charger 25000mAh (HI-S025)
Camping, Hiking, Backpacking, Emergency Preparedness, Power Outages, Off-Grid Travel, Disaster Relief, Field Work
Overview
The Hiluckey Solar Charger HI-S025 is a 25,000mAh (92.5Wh) four-panel solar power bank that earned The Gadgeteer's basecamp pick for summer 2026, pairing one of the largest batteries in the integrated-solar category with four foldable panels rated up to 6W. Independent lab testing measured ~542 mAh of direct solar input per hour, and QC 3.0 fast charging at 5V/3A tops up three devices at once from its USB-C and dual USB-A ports. A rugged waterproof build, 9-LED flashlight with SOS/strobe modes, and pass-through charging make it a practical emergency and off-grid companion — though reviewers note the bank can overheat if left in direct sun, tends to top itself off before outputting to devices, and its indicator LEDs are dim.
Key Highlights
- 25,000mAh (92.5Wh) lithium-polymer battery — charges smartphones 6-8 times and tablets 2.5-4 times, lasting ~9 days of average use; at 92.5Wh it stays under the 100Wh FAA limit for carry-on flights
- Four foldable solar panels rated up to 6W (independent lab testing measured ~5W) deliver ~542 mAh per hour of direct sun — second only to the QiSa among integrated units in published 2026 tests, and roughly 4x faster than single-panel banks
- QC 3.0 15W fast charging (5V/3A) via USB-C in/out plus dual USB-A ports — a full bank recharge takes only ~6-8 hours with a PD fast charger (2.5x faster than wall charging the previous generation)
- Built-in 9-LED emergency flashlight with a 135-ft beam, up to 110 hours of runtime, and Normal/SOS/strobe modes for outages and campsite emergencies
- Waterproof, shock-resistant, dust-sealed build with pass-through charging and a backpack hanger — The Gadgeteer's 2026 basecamp pick for multi-day off-grid trips
Video
Technical Specifications
| Brand | Hiluckey |
|---|---|
| Model | Hiluckey Solar Charger 25000mAh (HI-S025) |
| Capacity | 25,000mAh / 92.5Wh |
| Output | 15W max (QC 3.0, 5V/3A) — 1x USB-C PD bidirectional + 2x USB-A, up to 3 devices simultaneously |
| Input | USB-C PD (5V/3A) — full recharge ~6-8 hours with a PD fast charger; solar input ~5V/1A from 4 foldable panels (35-50 hours full charge in direct sun) |
| Ports & I/O | 1x USB-C (PD 15W bidirectional input/output) 2x USB-A (5V/3.1A output) |
| Full Recharge Time | ~6-8 hours via USB-C PD wall charger; 35-50 hours via solar panels in direct sunlight |
| Technology | 4x Foldable Monocrystalline Solar Panels (up to 6W), QC 3.0 Fast Charging, USB-C PD Bidirectional, Pass-Through Charging, 9-LED Flashlight (Normal/SOS/Strobe), Overcharge/Short-Circuit Protection |
| Airline Safe | Yes |
| Dimensions | 155 x 86 x 36 mm (6.1 x 3.4 x 1.4 in, folded) |