Ener-J T720 Quick Start Manual

The Ener-J T720 is a high-performance portable power station designed for outdoor adventures, emergency backup, and off-grid power needs. It features a 720Wh lithium-ion battery, multiple output ports (AC, DC, USB), pure sine wave inverter, LCD display for status monitoring, solar charging capability, and lightweight portable design. Below are key sections for safety, features, setup, operation, and maintenance.

1. Features at a Glance 2. Safety Information 3. Initial Setup & Charging 4. Specifications 5. Controls and Display 6. Connecting Devices 7. Using AC/DC Outputs 8. Solar Charging 9. Maintenance & Storage 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: 720Wh Lithium-ion Battery, Pure Sine Wave AC Outlets, DC Output Ports, USB-A & USB-C Ports, LCD Display, Solar Charging Input, Car Charging Input, LED Work Light.

Feature	Description
AC Output	2 x 120V AC outlets (300W continuous, 600W surge)
DC Output	1 x 12V/10A car port; 2 x 5.5mm DC ports
USB Ports	2 x USB-A (5V/2.4A), 1 x USB-C PD (60W)
LCD Display	Shows battery level, input/output wattage, remaining time
Solar Charging	Supports up to 200W solar panel input (MC4 connector)
Car Charging	12V/24V vehicle adapter for charging on the go
LED Work Light	Built-in adjustable brightness LED light
Battery Management	Overload, over-temperature, short-circuit protection
Weight	18.5 lbs (8.4 kg)
Dimensions	11.8 x 7.5 x 9.1 inches

Safety Information

Read all safety instructions before use. Keep away from children.

Do not expose to water or moisture; avoid rain and splashing.
Do not disassemble, puncture, or incinerate the unit.
Use only provided or recommended charging cables and adapters.
Keep vents unobstructed; do not cover during operation.
Store in a cool, dry place away from direct sunlight.

WARNING! Risk of electric shock or fire if misused. Do not attempt to repair yourself.

Initial Setup & Charging

First-time use: Fully charge the unit before initial operation.

AC Charging: Connect included AC adapter to wall outlet and DC input port. Charging time: ~7 hours.
Car Charging: Plug 12V car charger into vehicle's cigarette lighter port and DC input.
Solar Charging: Connect compatible solar panel (up to 200W) to solar input port.
Power On: Press and hold power button for 3 seconds; LCD will illuminate.

CAUTION! Use only approved charging methods. Do not charge near heat sources.

Specifications

Battery Capacity: 720Wh (20V, 36Ah) Lithium-ion.
AC Output: 120V, 60Hz, 300W continuous (600W surge).
DC Output: 12V/10A (car port), 12V/3A (DC ports).
USB Output: USB-A: 5V/2.4A each; USB-C PD: up to 60W.
Input Ports: AC adapter input, Solar input (11-28V, 200W max), Car input (12V/24V).
Display: LCD showing battery %, input/output power, estimated runtime.
Additional Features: LED work light, cooling fan, overload protection.
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 Display

Front Panel: Power Button, LCD Display, AC Output Switch, DC Output Switch, USB Ports, LED Light Button.

LCD Icons: Battery percentage, Input/Output power (W), Remaining time (h), Warning indicators (overload, high temp).

Operation: Press power button to turn on/off. Press AC/DC buttons to enable respective outputs. Press LED button to cycle through brightness levels (High/Low/SOS/Off).

Connecting Devices

Connect devices within specified power limits.

AC Devices: Plug into AC outlets (max 300W total).
DC Devices: Use car port for 12V devices (max 10A).
USB Devices: Connect phones, tablets, laptops to USB ports.
LED Light: Press LED button to activate built-in light.

Tip: Check device power requirements before connecting. Do not exceed 300W total AC load.

Using AC/DC Outputs

Powering devices with pure sine wave AC output.

Ensure device power rating is within 300W limit.
Press AC button to enable AC outlets.
Plug device into AC outlet; device should power on.
Monitor LCD for battery level and output wattage.
For DC devices: Press DC button, connect to car port or DC ports.
For USB charging: Connect directly to USB ports; no switch needed.

WARNING! Do not connect high-surge devices (e.g., refrigerators, power tools) unless within surge rating.

Solar Charging

Using solar panels for off-grid charging.

Use solar panel with MC4 connector (11-28V, up to 200W).
Connect panel to solar input port using provided cable.
Position panel in direct sunlight; LCD will show charging input.
Charging time varies based on panel wattage and sunlight.

Note: For optimal performance, use Ener-J recommended solar panels.

Maintenance & Storage

Regular maintenance ensures longevity.

Recharge every 3 months if storing for extended periods.
Clean exterior with dry cloth; do not use liquids.
Keep ports free of dust and debris.
Store at 50% charge in cool, dry location.

CAUTION! Do not store in extreme temperatures or humid environments.

Regulatory Information

FCC Part 15 Compliance: Class B digital device. Complies with Canadian ICES-003. CE, RoHS certified. Contains lithium-ion battery; follow local disposal regulations. Copyright © 2025 Ener-J. For support, visit www.ener-j.com or contact 1-800-555-ENERGY.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Unit won't power on	Battery depleted	Connect to AC/car/solar charger for at least 30 minutes.
No output from AC ports	Overload protection triggered	Disconnect devices, wait 10 seconds, press AC button again.
Slow charging	Low input power	Ensure charger is properly connected; use higher wattage source.
LCD shows error code	Over-temperature	Turn off unit, allow to cool in shaded area, ensure vents clear.
Solar not charging	Insufficient sunlight/connection	Check panel alignment and cable connections; verify panel compatibility.

Reset: Turn off all outputs, disconnect all devices, restart unit.

Service: 1-800-555-ENERGY; www.ener-j.com/support