Is this capable of starting up a V8? and I don't mean the tomato juice...:)

I it fires my 2020 Lexus 5.7 liter V8 right away with absolutely no problems. I've noticed on my 2016Ford Explorer twin turbo ecoboost if the battery 100% dead sometimes if you wait 1 or 2 minutes then it'll start right up. I also had to watch a you tube video in the beginning because I wasn't do it correctly, after that I've started about 7 other cars with it as well as a diesel truck

How long does the charge for the jumper last. dead batteries are few and far in between. If i were to charge it will it last a year, 2 years?

Mine lasted 6 years, in fairness it did not get charged up periodically. I bought it in 2016, it now won’t take a charge anymore. But, I used it 7 or 8 times in those 6 years (Vintage cars) and it saved my butt each time. For $100 I feel like that’s a fair trade. It lasted about as long as I expected. I will probably buy another

What is the operating temperature range? Can it be safely left in the hot car in the middle of summer (180 degrees or more)?

The people saying this can be stored up to 180°F are wrong. The manual specifically states storage temperature range of 120°F max with a daily avg of 0-77°F. Max operating temp is 120°F, "NEVER operate above this temperature." There is a warning to never exceed 180°F, this is the temperature at which the battery could explode. These are NOT meant to be stored in a hot vehicle. You may get away with it, or not.

Will this start a Gel Battery?

I found this on the NOCO faq page.... What types of batteries can Boost jump? All Boost models (except the GB500 Boost Max) can jump start 12V lead acid batteries only. This includes wet, gel, maintenance free, enhanced flooded battery, and absorbent glass mat batteries. The GB500 Boost Max is capable of jump starting 12V and 24V acid batteries.

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NOCO Boost GB40: 1000A UltraSafe Jump Starter – 12V Lithium Battery Booster Pack, Portable Jump Box, Power Bank & Jumper Cables - for 6.0L Gas and 3.0L Diesel Engines

NOCO Boost GB40: 1000A UltraSafe Jump Starter – 12V Lithium Battery Booster Pack, Portable Jump Box, Power Bank & Jumper Cables - for 6.0L Gas and 3.0L Diesel Engines

Product ID: 21550364

Details

Battery Cell Composition
Lithium
Brand
NOCO
Product Dimensions
4.61"D x x
Vehicle Service Type
ATV Motorcycle
Voltage
12 Volts

⚡1000A peak jump power

🔋20 starts per charge

🔦100-lumen LED flashlight

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VT43352

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Details

Battery Cell Composition
Lithium
Brand
NOCO
Product Dimensions
4.61"D x x

Description

⚡ Power up your peace of mind—jumpstart, charge, and shine anywhere!

ULTRA SAFE TECH - Patented spark-proof & reverse polarity protection for foolproof, stress-free use.
EMERGENCY READY - Integrated 100-lumen LED with 7 modes including SOS & strobe for roadside visibility.
RUGGED COMPACT - IP65-rated, water & dust resistant, fits perfectly in your glovebox or emergency kit.
INSTANT POWER SURGE - 1000 amps to jump-start dead batteries in seconds—never get stranded again.
DUAL PURPOSE POWER BANK - Charge your phone or tablet on the go with a fast-recharging USB-C power bank.

The NOCO Boost GB40 is a compact 1000-amp lithium jump starter designed for 12V vehicles with up to 6.0L gas or 3.0L diesel engines. It delivers up to 20 jump starts per charge, features patented spark-proof and reverse polarity protection for safe use, and doubles as a portable USB-C power bank. Equipped with a 100-lumen LED flashlight offering 7 light modes, it’s built rugged with an IP65-rated casing to withstand water, dust, and impact. Lightweight and portable at 2.4 lbs, it includes heavy-duty clamps, a USB-C cable, and a storage bag, backed by a 1-year warranty and engineered in the USA.

Specifications

ASIN	B015TKUPIC
Amperage	1000 Amps
Automotive Fit Type	Universal Fit
Battery Capacity	2150 Milliamp Hours
Battery Cell Composition	Lithium
Battery Type	Lithium
Best Sellers Rank	#18 in Automotive ( See Top 100 in Automotive ) #1 in Jump Starters
Brand	NOCO
Brand Name	NOCO
Compatible with Vehicle Type	ATV, Motorcycle, Passenger Car, RV, Tractor, Truck, UTV, Van, Watercraft
Customer Reviews	4.6 out of 5 stars 126,168 Reviews
Global Trade Identification Number	00046221150025
Included Components	1-Year Limited Warranty, GB40 Portable Car Battery Jump Starter Pack, Heavy-Duty Booster Clamps, Microfiber Storage Bag, USB-C Charging Cable, User Guide for Jump Starter
Item Dimensions D x W x H	4.61"D x 8.19"W x 4.21"H
Item Type Name	NOCO Boost Plus GB40 1000 Amp 12-Volt UltraSafe Lithium Jump Starter Box, Car Battery Booster Pack, Portable Power Bank Charger, And Jumper Cables For 6-Liter Gasoline And 3-Liter Diesel Engines
Item Weight	2.4 Pounds
Manufacturer	NOCO
Manufacturer Part Number	GB40
Manufacturer Warranty Description	1-Year Limited Warranty
Model Number	GB40
Peak Output Current	1000 Amps
Product Dimensions	4.61"D x 8.19"W x 4.21"H
Specification Met	UL
UPC	046221150025
Unit Count	1.0 Count
Vehicle Service Type	ATV, Motorcycle, Passenger Car, RV, Tractor, Truck, UTV, Van, Watercraft
Voltage	12 Volts

Reviews

J**R

29.03.2026

T**D

5.04.2026

P**Y

18.04.2026

$**$

26.02.2026

J**E

28.02.2026

H**W

24.04.2026

J**T

7.01.2024

C**.

10.04.2026

M**3

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D**E

20.11.2025

M**T

11.04.2026

G**N

21.01.2024

M**H

27.01.2026

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