does this have a "boost" button for dead battery?

Not that I'm aware of. Just connect the cables to the dead battery, wait a few seconds, and then start the car

Turn on meter it read 85% - turned on power and cycled through the lights did not get red safety light is there a trick to get red light?

When the green light on the jump cables is on, it indicates that they are connected properly. However, if the green light is blinking or off, it may mean that your car battery is either too low or completely dead. you can press the boost button, within 30 seconds, the green light will turn on and start your engine. If the red light turns on, it may indicate that you may have reversed the connection of the clamps. Double check the connection before attempting to start your vehicle.

How many times will it jump one one charge?

I used mine 4 times in one week and it only dropped 10% of charge.

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VTOMAN VL3 3000A LiFePO4 Portable Jump Starter for Up to 7L Gas & 5L Diesel

Product ID: 451419015

Details

Battery Cell Composition
Brand
VTOMAN
Product Dimensions
6.8"D x 3.6"W
Vehicle Service Type
ATV Lawn Mower
Voltage
12 volts

⚡3000A peak current - instant power boost

🔋LiFePO4 battery - 5000+ cycles, ultra-durable

🛠️10 safety protections - fail-safe jump starts

755.65 DT

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Description

⚡ Power up your ride & your life — jumpstart confidence anywhere, anytime!

COMPACT YET MIGHTY - Weighing just 1.2 lbs and pocket-sized, it fits effortlessly in your car or travel bag for on-the-go readiness.
SAFETY FIRST ALWAYS - 10 advanced protections guard against sparks, reverse polarity, overcurrent, and extreme temperatures.
UNMATCHED POWER SURGE - Jump-start up to 7L gas & 5L diesel engines in seconds with a massive 3000A peak current.
ENDURANCE THAT OUTLASTS - LiFePO4 battery technology delivers 5000+ full cycles, lasting 5x longer than lead-acid alternatives.
MORE THAN A JUMP STARTER - Dual USB quick charge ports and a 3-mode LED flashlight keep your devices powered and your path lit.

The VTOMAN VL3 3000A LiFePO4 Portable Jump Starter is a compact, ultra-durable 12V booster designed for vehicles with up to 7L gas or 5L diesel engines. Featuring a long-lasting lithium-phosphate battery with over 5000 recharge cycles, it delivers a powerful 3000A peak current for rapid jump starts. Beyond jump-starting, it doubles as a fast USB charger and LED flashlight, all protected by 10 advanced safety features to ensure reliable performance in any condition. Perfect for professionals and adventurers who demand dependable power on the go.

Specifications

ASIN	B0G6D6MR9S
Amperage	3000 A
Automotive Fit Type	Universal Fit
Battery Capacity	10000 milliamp_hours
Battery Type	Lithium-Phosphate
Best Sellers Rank	#28,122 in Automotive ( See Top 100 in Automotive ) #200 in Jump Starters
Brand Name	VTOMAN
Compatible with Vehicle Type	ATV, Lawn Mower, Motorcycle, Passenger Car, Snowmobile, Tractor, UTV, Van, Watercraft
Customer Reviews	4.6 4.6 out of 5 stars (1,929)
Included Components	1 X 15W TYPE-C to TYPE-C Cable, 1 X 15W USB-A to USB-C Cable, 1 X Carrying Bag & Guide Card, 1 X car jump starter, 1 X smart jumper cable
Item Dimensions D x W x H	6.8"D x 3.6"W x 1.7"H
Item Highlight	LIFEBMS Car Battery Booster Pack, 12V Jump Box with Storage Case, USB Quick Charge, LED Light, BOOST Mode for Dead Batteries
Item Weight	1.2 pounds
Manufacturer	Shenzhen Carku Technology Co.,Limited
Manufacturer Part Number	JS-610
Manufacturer Warranty Description	18 months
Model Number	JS-610
Number of Items	1
Peak Output Current	3000 A
Unit Count	1 Count
Voltage	12 volts

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755.65 DT

Duties & taxes included

In stock

Sold byAmazon TunisiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Tunisia.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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1 week ago

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

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