Duralast 900 Jump Starter Manual

The Duralast 900 Jump Starter is a portable power source designed for jump-starting vehicles with 12V batteries. It features a high-output 900-amp peak current, built-in safety protections (reverse polarity, overload, short circuit), a USB charging port for mobile devices, an LED work light, and a digital display showing battery status. Below are key sections for safety, features, operation, maintenance, and troubleshooting.

1. Features at a Glance 2. Safety Precautions 3. Initial Setup & Charging 4. Specifications 5. Controls and Indicators 6. Jump-Starting Procedure 7. Using USB Power & LED Light 8. Maintenance & Storage 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: High-capacity sealed lead-acid battery, Heavy-duty jumper cables with clamps, Digital battery status display, USB charging port (5V/2.1A), LED work light, Carrying handle, AC wall charger.

Feature	Description
Peak Current	900 Amps for starting most gasoline engines
Battery Type	Sealed Lead-Acid (SLA), Maintenance-free
USB Port	5V/2.1A output for charging phones/tablets
LED Work Light	High-intensity light with steady/flash/SOS modes
Digital Display	Shows internal battery charge level (percentage)
Safety Protections	Reverse polarity, overload, short circuit, over-temperature
Clamps	Heavy-duty copper jaws with insulated handles
Charger	AC wall adapter for recharging unit
Carrying Handle	Integrated for easy transport
Warranty	Limited 1-year warranty from date of purchase

Safety Precautions

Read all instructions before use. Failure to follow may cause injury or damage.

Wear safety glasses and gloves when jump-starting.
Ensure jump starter and vehicle are off before connecting cables.
Connect clamps in correct order: RED to positive (+), BLACK to negative (-) or unpainted metal ground.
Do not touch clamps together while unit is on.
Keep away from flames, sparks, and excessive heat.
Do not use with damaged cables or clamps.
Do not attempt to jump-start frozen batteries.
Keep out of reach of children.

WARNING! Risk of explosion. Battery gases can ignite. Work in well-ventilated area.

Initial Setup & Charging

Before first use, fully charge the jump starter.

Plug the AC wall charger into a standard 120V outlet.
Connect the charger plug to the charging port on the jump starter.
The digital display will illuminate and show charging progress. Charge until display reads 100% (approx. 8-12 hours).
Disconnect charger. Unit is ready for use.
For long-term storage, recharge every 3 months.

CAUTION! Use only the provided charger. Do not charge near flammable materials.

Specifications

Model: Duralast 900
Peak Amperage: 900A
Battery Voltage: 12V DC
Internal Battery: 18Ah Sealed Lead-Acid
USB Output: 5V DC, 2.1A Max
Charging Input: 120V AC, 60Hz (Charger: 12V DC, 1A)
LED Light: 3 Modes (Steady, Flash, SOS)
Clamp Cable Length: 20 inches
Dimensions: 10.2" L x 7.5" W x 8.3" H
Weight: 18.5 lbs
Operating Temp: 14°F to 104°F (-10°C to 40°C)

Controls and Indicators

Front Panel: POWER Button, USB Port, LED Light Button, Digital Display.

Digital Display: Shows internal battery charge percentage (0%-100%).

LED Light: Press light button to cycle modes: ON (Steady) → Flash → SOS → OFF.

Power Button: Press once to turn on jump-start function and display. Unit will auto-shutoff after 30 seconds if no clamps are connected. Press and hold for 3 seconds to force shutdown.

Status Indicators: Display will show "LO" if battery is below 10% (needs recharge). If error (e.g., reverse polarity) is detected, display will show "ERR" and audible alarm may sound.

Jump-Starting Procedure

Prepare: Ensure jump starter is off. Park donor vehicle (if used) close to disabled vehicle, but do not let vehicles touch. Turn off ignition and all accessories in both vehicles.
Connect Clamps:
- Connect RED clamp to POSITIVE (+) terminal of dead battery.
- Connect BLACK clamp to a solid, unpainted metal ground on engine block or chassis (NOT to negative terminal of dead battery if possible).
Power On: Press POWER button on jump starter. Display will show battery level.
Start Vehicle: Attempt to start the disabled vehicle. Crank for no more than 3-5 seconds. If engine does not start, wait 30 seconds before retrying (up to 3 attempts).
Disconnect: Once vehicle starts, turn off jump starter by pressing POWER button. Remove clamps in REVERSE order: BLACK clamp first, then RED clamp.
Recharge: Recharge jump starter as soon as possible after use.

Tip: If vehicle fails to start after 3 attempts, battery may be deeply discharged or faulty. Seek professional assistance.

Using USB Power & LED Light

USB Charging: The USB port can charge phones, tablets, and other USB devices.

Ensure jump starter is charged (display shows at least 20%).
Connect your device's USB cable to the jump starter's USB port.
Device should begin charging automatically. The jump starter will auto-shutoff after 30 minutes if no current draw is detected.

LED Work Light: Useful for emergency lighting or roadside repairs.

Press the LED Light button to cycle through modes: Steady On → Flashing → SOS → Off.
In Steady mode, runtime is approximately 8 hours on full charge.

WARNING! Do not use USB port and jump-start function simultaneously.

Maintenance & Storage

Regular Maintenance:

Recharge fully after each use.
If not used, recharge every 3 months to maintain battery health.
Keep clamps clean and free of corrosion. Wipe with dry cloth.
Inspect cables for cracks or exposed wire before each use.

Storage: Store in a cool, dry place away from direct sunlight and moisture. Ideal storage temperature: 50°F to 77°F (10°C to 25°C).

CAUTION! Do not disassemble the unit. No user-serviceable parts inside.

Regulatory Information

FCC Part 15: Class B digital device; complies with limits for residential use. This device complies with Part 15 of the FCC Rules. Copyright © Duralast. Duralast is a trademark. For support, visit www.duralast.com or contact customer service at 1-800-XXX-XXXX.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Jump starter won't turn on	Battery deeply discharged	Connect to AC charger for at least 2 hours before attempting to use.
Display shows "LO"	Internal battery low	Recharge immediately.
Display shows "ERR"	Reverse polarity detected	Check clamp connections. Ensure RED is on positive (+), BLACK is on ground.
Vehicle does not crank	Poor connection, weak jump starter	Ensure clamps have solid metal contact. Recharge jump starter fully. Try a different ground point.
USB port not charging device	Faulty cable, jump starter battery low	Try a different USB cable. Ensure jump starter charge is above 20%.
LED light not working	Battery depleted, button fault	Recharge unit. If problem persists after full charge, contact support.
Unit gets hot during charging	Normal during high-current charge	Ensure ventilation. If excessively hot, disconnect and contact support.

Reset: Disconnect all cables, press and hold POWER button for 10 seconds.

Service: 1-800-XXX-XXXX; www.duralast.com