How long is the life of the unit if it were fully charged and left unused in the car boot for say 3 years ?

FULLY CHARGED USER LIFE SAYS 3 MONTHS IN MANUAL

What’s the difference between gt4000 and gt4000s or are they the same?

Dear customer, the GT4000S has no built-in pre-heating function while the GT4000 has.

My electric (EV) has a second 12v battery which starts the car, can i use this if it becomes flat?

THE ONLY PROVISO WOULD BE OVERVOLTAGE PROTECTION WHICH I AM SURE IT WILL HAVE , SO YES YOU COULD USE IT FOR THAT , YOUR CAR USER MANUAL SHOULD COVER THIS ISSUE.

I have a 12v tyre inflator and other 12v equipment. Is there a 12v output?

No but has a USB. I've got a USB to 12v female. Just plug your 12v into that.

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⚡ Never get stranded—power up fast, charge smart, and jump ahead!

LONG LASTING STANDBY - 24 months standby with 10 built-in protections for extended durability
VERSATILE POWER BANK - Delivers up to 100W fast charging for laptops and devices via Type-C port
TURBO CHARGED READINESS - Fully charges from zero to full in just 1.2 hours with included car charger
RUGGED RELIABLE DESIGN - IP65 water-resistant, flame-retardant shell with scratch-proof rubber coating
LIGHTNING FAST JUMP STARTS - 4000 Amps peak power revives dead batteries in seconds

The GOOLOO GT4000S is a powerhouse 4000A portable jump starter with ultra-fast 100W two-way charging, capable of jump-starting all gasoline and up to 10L diesel engines. Its rugged IP65-rated design ensures durability, while a rapid 1.2-hour full charge and 24-month standby time keep you ready for any roadside emergency or on-the-go device charging.

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Sneha T.

Received my product in pristine condition. Great service overall.

1 month ago

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Fast shipping and excellent packaging. The Leatherman tool feels very premium and sturdy.

1 day ago

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Manufacturer	GOOLOO
Brand	GOOLOO
Model	GT4000S-4000A-Red
Product Dimensions	15 x 27 x 12 cm; 2.02 kg
Batteries	1 Lithium Polymer batteries required. (included)
Item model number	JS-271
Manufacturer part number	1
Amperage	4000 Amps
Item Weight	2.02 kg

GOOLOO GT4000S Jump Starter 4000A 100W 2-Way Fast Charging, 12V Portable Car Battery Booster Pack,IP65 Power Bank Charger Box with Jumper Cables for all gasoline or 10L diesel engines

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