Grecell S350 User Manual

The Grecell S350 is a high-capacity portable power station designed for outdoor adventures, emergency backup, and off-grid power needs. It features a 350Wh lithium-ion battery, multiple output ports (AC, DC, USB), pure sine wave inverter, LCD display for status monitoring, solar charging capability, and various safety protections. Below are key sections for safety, features, installation, setup, operation, and troubleshooting.

1. Features at a Glance 2. Installation 3. First-Time Setup 4. Specifications 5. Controls and Settings 6. Connecting Devices 7. Charging the Power Station 8. Safety Features 9. Care & Maintenance 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: High-capacity lithium-ion battery, Pure Sine Wave AC Inverter, LCD Display, Multiple output ports, Solar charging input, Car charging cable.

Feature	Description
AC Output	Pure sine wave 110V/60Hz outlet for sensitive electronics
DC Output	12V/10A carport for DC devices
USB Outputs	USB-A and USB-C ports for mobile devices
LCD Display	Shows battery level, input/output wattage, and status
Solar Charging Input	MC4 connector for solar panel charging
Car Charging Input	12V car adapter for charging while driving
AC Charging Input	Wall adapter for fast AC charging
LED Flashlight	Built-in emergency light with SOS mode
Battery Management System	Protects against overcharge, over-discharge, short circuit
Power Button	Turns unit on/off

Installation

Unpack and inspect contents. Place on stable, dry surface.

Initial Charge: Connect AC adapter to wall outlet and to S350's AC input port.
Positioning: Ensure unit is in a well-ventilated area, away from heat sources and moisture.
Connecting Solar Panels: Use compatible solar panel with MC4 connector to solar input.
Connecting to Car: Use provided car charging cable to 12V car outlet.

WARNING! Unit is heavy; lift with care. Keep away from children and pets.

First-Time Setup

Power on unit; check LCD display.

Initial Charge: Charge fully before first use (approx. 6-7 hours via AC).
LCD Display: Verify battery level shows 100% after full charge.
Output Selection: Press power button, then select desired output (AC, DC, USB).
Flashlight: Press and hold power button for 2 seconds to activate flashlight.

CAUTION! Do not use damaged cables. Ensure all connections are secure.

Specifications

Battery Capacity: 350Wh Lithium-ion.
AC Output: 110V, 60Hz, 300W (600W surge).
DC Output: 12V/10A.
USB Outputs: 2x USB-A (5V/2.4A), 1x USB-C (PD 60W).
Solar Input: 12-24V, max 100W.
AC Charging Input: 110V/60Hz.
Car Charging Input: 12V/10A.
Weight: Approx. 10 lbs.
Operating Temp: 32°F to 104°F (0°C to 40°C).
Storage Temp: -4°F to 113°F (-20°C to 45°C).

Controls and Settings

Access functions via power button and LCD display. Front Panel: Power Button, LCD Display, AC Outlet, DC Port, USB Ports, Solar/Car Inputs.

LCD Display Icons: Battery Level, Input/Output Power, Warning Indicators (overload, high temp).

Settings: Press power button to cycle outputs (AC/DC/USB off). Hold power button 2 sec for flashlight (press again for SOS). Battery saver mode: Auto-shutdown after 12 hours of no load.

Connecting Devices

AC Devices: Plug into AC outlet. DC Devices: Use 12V car adapter. USB Devices: Connect to USB-A or USB-C ports.

Ensure S350 is powered on.
Connect device cable to appropriate port.
Check LCD for output power and battery level.
For multiple devices, do not exceed total 300W output.

Tip: Start with high-power devices first to manage battery usage.

Charging the Power Station

Supports AC wall charging, solar charging, and car charging.

AC Charging: Connect AC adapter to wall outlet and S350 AC input. Full charge in 6-7 hours.
Solar Charging: Connect solar panel MC4 cables to solar input. Position panel in direct sunlight.
Car Charging: Plug car charging cable into 12V car outlet and S350 DC input.
Charging Status: LCD shows charging icon and estimated time to full.

WARNING! Use only Grecell-approved chargers and cables. Do not charge in extreme temperatures.

Safety Features

Overcharge Protection: Stops charging at 100%. Over-discharge Protection: Shuts off at 10% battery. Short Circuit Protection: Cuts power if short detected. Overload Protection: Shuts off if load exceeds 300W. Temperature Control: Reduces output if overheating.

Care & Maintenance

Store in cool, dry place. Clean with dry cloth only; do not use liquids. Recharge every 3 months if storing long-term.

CAUTION! Do not disassemble unit. Avoid water exposure. Keep away from metal objects to prevent short circuits.

Regulatory Information

FCC Part 15: Class B digital device; complies with interference limits. CE, RoHS compliant. Copyright © 2023 Grecell; trademarks of Grecell Technology Co., Ltd. For support, visit www.grecell.com or contact [email protected].

Troubleshooting

Symptom	Possible Cause	Corrective Action
Unit won't turn on	Battery depleted	Charge unit fully; check power button.
No output power	Overload protection triggered	Disconnect devices; turn off for 1 minute; restart.
Slow charging	Low input power	Use higher wattage charger; ensure solar panel in direct sun.
LCD display blank	Battery too low	Charge immediately; if no response, contact support.
Overheating	High ambient temp or overload	Move to cooler area; reduce connected load.

Reset: Turn off, disconnect all devices, charge for 30 minutes, then restart.

Service: [email protected]; www.grecell.com