Will this start a completely dead battery for a gmc duramax 6.6 liter diesel?

You are not jump starting your car battery, you are jump starting your starter that starts the engine. Once the engine is running your alternator-regulator starts to recharge the dead battery. If the dead battery has internal cells that are shorted, the battery overheats and gases that leaks acid . So you should replace the battery if it does not read exactly 12 VDC when the engine is turned off. Remember you are not jump starting your car battery, you are providing 1500VA to the starter. Hope this answers your question instead of giving just a yes or no response. Bill is an electrical and electronics Design and RDT&E engineer with over 47 years experience in the power electronics industry and also trains electricians and electronics technicians in servicing large UPS Battery Support systems on US Navy ships.

What are the Watt hrs. of the internal battery ?

The voltage varies between about 13V and 16.5V, with a nominal of 14.8V. I measured about 4Ah of capacity, by measuring the current and time to discharge and charge. So the watt hours would be about 59Wh.

Can it jumper start extreme discharge car battery,like a very low voltage?

Agree with others answers. I had a dead battery (zero volts) and there was no override option. I tried using this and unsuccessful. Thankfully, I had another jump starter in the car (Noco gb40) that has the override option. Car started in 2 tries. Im returning the avapow.

Can i leave it plug in and charging when not in use?

Yes, but best to remove for longer life expectancy once the the bar gage is solid green and not blinking. When you first receive it may take a little over an hour to recharge the device. Answered by an electrical power electronics engineer.

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AVAPOW Car Jump Starter, 4000A Peak Battery (for All Gas or Up to 10L Diesel), Portable Booster Power Pack, 12V Auto Jump Box with LED Light, USB Quick Charge 3.0

AVAPOW Car Jump Starter, 4000A Peak Battery (for All Gas or Up to 10L Diesel), Portable Booster Power Pack, 12V Auto Jump Box with LED Light, USB Quick Charge 3.0

Product ID: 342309311

Details

Battery Cell Composition
Lithium Ion
Brand
AVAPOW
Product Dimensions
5.91"D x x 5"H
Vehicle Service Type
ATV Motor
Voltage
12 Volts

⚡4000A peak current

🔋27800mAh lithium battery

🔌Dual USB 3.0 quick charge

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Description

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

RAPID USB CHARGING - Dual USB 3.0 ports charge your devices 75% faster, keeping your tech powered on the go.
SMART SAFETY FIRST - Built-in intelligent protections with buzzer alerts ensure safe, foolproof jump starts every time.
UNMATCHED POWER BOOST - 4000A peak current jumpstarts all 12V vehicles, from motorcycles to 10L diesel trucks, with ease.
MASSIVE BATTERY CAPACITY - 27800mAh lithium-ion battery delivers up to 60 jump starts per full charge—never get stranded again.
EMERGENCY READY LED LIGHT - Multifunctional flashlight with SOS and strobe modes—your ultimate companion for night drives and outdoor adventures.

The AVAPOW Car Jump Starter is a compact yet powerhouse 12V booster delivering 4000A peak current, capable of jumpstarting all gas vehicles and diesels up to 10L. Equipped with a high-capacity 27800mAh lithium-ion battery, it supports up to 60 jump starts per charge. Dual USB 3.0 ports provide rapid charging for your devices, while intelligent safety features protect against short circuits, reverse polarity, and overheating. Its multifunctional LED light with flashlight, SOS, and strobe modes makes it an essential emergency tool for professionals and adventurers alike.

Specifications

ASIN	B0928VN98C
Amperage	4000 Amps
Battery Capacity	27800 Milliamp Hours
Battery Type	Lithium Ion
Best Sellers Rank	#8,856 in Automotive ( See Top 100 in Automotive ) #86 in Jump Starters
Brand Name	AVAPOW
Compatible with Vehicle Type	ATV, Motor, Snowmobile
Customer Reviews	4.5 4.5 out of 5 stars (3,522)
Item Dimensions D x W x H	5.91"D x 10.08"W x 5"H
Item Weight	3.5 Pounds
Manufacturer	Dongguan Carosstech Co., Ltd.'
Manufacturer Part Number	A58
Model Number	A58
Peak Output Current	4000 Amps
UPC	704219007866
Voltage	12 Volts

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€ 170.62

Duties & taxes included

In stock

Sold byAmazon CroatiaDelivered 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 Croatia.

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TrustScore 4.5 | 7,300+ reviews

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