Can I use this if my car battery is completely dead and shows 0V?

No, if the voltage drops below 1V, jump starter won’t be able to start the engine. When the battery is completely drained, the capacitor can’t charge. Please make sure your car battery still has a minimal amount of power left.

Can I use this for a hybrid car?

We designed this product for 12V gasoline cars up to 8.0L and diesel cars up to 6.0L. Since hybrid vehicles use different types of batteries and we haven’t tested them all, we don’t recommend using it with hybrid cars.

How long does the charge last if I charge it in advance?

Unlike lithium batteries, capacitors can’t hold a charge for long. Even when fully charged, they naturally discharge within 1–2 days. You don’t need to charge it beforehand—just connect it to the power source (your car battery) when needed.

I pressed the start button but the device doesn’t work. What should I do?

Autowit jump starter only works when it’s fully charged by connecting to your car battery. Please check if the product is fully charged and make sure your car battery still has some power left for the startup process.

Does this product have a flashlight or phone charging function?

No, Autowit jump starter uses a capacitor, which doesn’t store power like a battery. It’s designed solely for jump-starting vehicles and doesn’t support additional features like lighting or charging mobile devices.

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autowit SuperCap 2 12-Volt Battery-less Portable Jump Starter (Up to 7.0L Gas, 4.0L Diesel Engine) Built-in SuperCap, No Need of Regular Charge, 10 Years Lifespan, Extremely Weather Operating

autowit SuperCap 2 12-Volt Battery-less Portable Jump Starter (Up to 7.0L Gas, 4.0L Diesel Engine) Built-in SuperCap, No Need of Regular Charge, 10 Years Lifespan, Extremely Weather Operating

Product ID: 252114263

Details

Battery Cell Composition
Lithium Ion
Brand
autowit
Product Dimensions
11.5D x 26.5W
Vehicle Service Type
Passenger Car
Voltage
12 Volts

⚡800A peak current

🔋100,000+ jump starts lifespan

❄️🔥Operates -40°C to 70°C

HK$3434

Duties & taxes included

In stock

Sold byAmazon Hong KongDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

⚡ Jumpstart your peace of mind—anytime, anywhere!

COMPACT POWERHOUSE - Lightweight and portable, fits effortlessly in your glovebox or backpack.
SAFETY FIRST ALWAYS - Multi-layer protection guards against sparks, reverse polarity, and overloads.
ULTRA DURABLE LIFESPAN - Over 100,000 uses—outlasts traditional battery jump starters by years.
BUILT TO BRAVE EXTREMES - Reliable jump starts from freezing cold to scorching heat.
INSTANT POWER ZERO WAIT - No pre-charging needed thanks to advanced supercapacitor tech.

The autowit SuperCap 2 is a cutting-edge 12V batteryless portable jump starter using supercapacitor technology to deliver up to 800 amps peak current. It supports gas engines up to 7.0L and diesel engines up to 4.0L, operates flawlessly in extreme temperatures (-40°C to 70°C), and boasts a lifespan exceeding 100,000 jump starts without regular charging. Designed for safety and convenience, it features multiple protections and a compact, lightweight form factor, making it an essential emergency tool for modern drivers.

Specifications

ASIN	B086L29DL9
Amperage	800 Amps
Battery Capacity	12 Volts
Battery Cell Composition	Lithium Ion
Battery Composition	Lithium Ion
Best Sellers Rank	#121,444 in Car & Motorbike ( See Top 100 in Car & Motorbike ) #65 in Automobile Battery Jump Starters
Brand	autowit
Brand Name	autowit
Compatible with Vehicle Type	Passenger Car
Country of Origin	USA
Customer Reviews	4.4 out of 5 stars 2,492 Reviews
Item Dimensions D x W x H	11.5D x 26.5W x 4.5H Centimeters
Item Weight	2 Pounds
Manufacturer	Autowit
Manufacturer Part Number	autowit
Peak Output Current	800 Amps
Product Dimensions	11.5D x 26.5W x 4.5H Centimeters
Vehicle Service Type	Passenger Car
Voltage	12 Volts
Whats in the box?	autowit

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HK$3434

Duties & taxes included

In stock

Sold byAmazon Hong KongDelivered 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 Hong Kong.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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