The Allto Solar AS-US-5W-EC is a 5W solar-powered emergency charger with a built-in 2000mAh lithium battery, USB output for device charging, integrated LED flashlight with multiple modes (steady, SOS, strobe), solar panel for trickle charging, water-resistant design (IPX4), and a carabiner clip for easy attachment. Ideal for outdoor activities, emergencies, and backup power. Below are key sections for safety, features, installation, setup, operation, and troubleshooting.
Key components: 5W monocrystalline solar panel, 2000mAh Li-ion battery, USB-A output port, multi-mode LED flashlight, power/charge indicator LEDs, carabiner clip, and weather-resistant casing.
| Feature | Description |
|---|---|
| Solar Panel | 5W monocrystalline panel for ambient light charging |
| Battery Capacity | 2000mAh built-in lithium-ion rechargeable battery |
| USB Output | 5V/1A standard USB port for charging phones, GPS, etc. |
| LED Flashlight | Integrated LED with Steady, SOS, and Strobe modes |
| Charge Indicator | 4-LED battery level display (25%, 50%, 75%, 100%) |
| Carabiner Clip | Metal clip for attaching to backpack, belt, or gear |
| Weather Resistance | IPX4 rated against water splashes from any direction |
| Power Button | Turns flashlight on/off and cycles through modes |
| Solar Charging Port | Direct connection to solar panel for battery charging |
| Micro-USB Port | For backup charging via wall adapter or computer |
Unpack and inspect contents. Ensure all parts are present and undamaged.
WARNING! Do not disassemble the unit. Avoid exposing to extreme temperatures or prolonged direct sunlight when not in use for charging.
Prepare the charger for initial use.
CAUTION! Use only provided or certified cables/adapters. Do not charge in temperatures below 32°F (0°C) or above 113°F (45°C).
Primary control is the multi-function power button. LED indicators show battery status.
Power Button: Short press to cycle flashlight modes (Steady → SOS → Strobe → Off). Long press (2 seconds) to turn flashlight on/off from any mode. Press once while charging to check battery level.
LED Indicators (4 lights): Illuminate to show approximate battery level: 1 light = 0-25%, 2 lights = 26-50%, 3 lights = 51-75%, 4 lights = 76-100%. Flashing during charging; solid when fully charged.
Solar Charging Indicator: Small red LED near solar panel lights when solar charging is active.
Use the USB output port to charge electronic devices.
Tip: For fastest charging, use wall adapter via micro-USB. Solar charging is slower and depends on sunlight intensity.
Supports solar and micro-USB charging.
WARNING! Do not look directly into LED flashlight. Do not charge or use near flammable materials.
Overcharge Protection: Automatically stops charging when battery is full. Short-Circuit Protection: Safeguards against output short circuits. Temperature Control: Reduces charging current if overheating detected. Low-Power Shutdown: Automatically turns off flashlight when battery is critically low to prevent damage.
Use a soft, dry cloth to clean the solar panel and casing. For stubborn dirt, use a slightly damp cloth. Ensure unit is completely dry before use or charging.
CAUTION! Do not use chemicals, solvents, or abrasive cleaners. Do not submerge in water despite IPX4 rating. Store in a cool, dry place away from direct sunlight when not in use for extended periods.
FCC Part 15: Class B digital device; complies with interference limits for residential use. Copyright © 2025 Allto Solar; trademarks of Allto Solar, Inc. Contains lithium-ion battery; follow local regulations for disposal. For support, visit www.alltosolar.com or contact 1-800-555-ALLTO (2558).
| Symptom | Possible Cause | Corrective Action |
|---|---|---|
| Not charging via solar | Insufficient sunlight/panel dirty | Place in direct sunlight; clean panel with dry cloth; ensure correct orientation. |
| Not charging via USB | Faulty cable/adapter; no power | Try different cable/adapter; ensure power source is active; check micro-USB port for debris. |
| Flashlight not working | Battery depleted; button issue | Charge the unit; press and hold power button for 2 seconds; check for obstructions. |
| Device not charging from USB port | Low charger battery; incompatible device | Charge the Allto unit first; ensure device is compatible with 5V/1A charging. |
| LED indicators not lighting | Battery completely drained; internal fault | Charge via micro-USB for at least 30 minutes; if no change, contact support. |
Reset: Fully discharge then fully recharge the battery to reset battery management system.
Service: 1-800-555-ALLTO (2558); www.alltosolar.com/support