Is this the type of jumper that you charge inside, by plugging it in, then you are able to jump-start your car with nothing plugged in.

Yes, you can charge it in the house or garage, then you can carry it down the driveway, or down the street... My last one I would charge it up about every 4 weeks to every 6 weeks. I believe I was able to Jump-Start 3 vehicles, but possibly a 4th one, without any issues.... Although this Unit is not really light like one of those Small Hand Held Units, These Units are larger/heavier ones. They can handle Stronger Boosts, and For Longer Periods Of Time..... I'm also getting Battery Tester. Amazon has one for $12.88 Prime 2-Day Shipping. That way I know if it's a Battery Issue, Alternator Issue, or when it's showing a Full Charge, then only starts with someone Jumping the vehicle, then it's probably the Starter....

is there a DC converter from 120v to 240v? my country (singapore) is using 240v wall socket

Yes, I've ordered a small one (200watts) recently off Amazon. The Simran SMF-200 Delux Step Down Voltage Converter...

can you use it to charge a cell phone? Could you use it to run portable dvd players?

Yes and yes. As long as you don't exceed 5 amps. And I believe those two things qualify

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J309 Portable Power Station Jump Starter 600 Peak Amp Battery Booster, 3.1A USB Ports, Battery Clamps

J309 Portable Power Station Jump Starter 600 Peak Amp Battery Booster, 3.1A USB Ports, Battery Clamps

Product ID: 1202394

Details

Battery Cell Composition
Lead Acid
Brand
STANLEY
Product Dimensions
10"D x 4.5"W x
Vehicle Service Type
Passenger Car
Voltage
12 Volts

⚡600 peak amps jump-start power

💡270° rotating high-powered LED light

🔋Triple USB ports for device charging

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Description

⚡ Power up your drive, charge your life, and never miss a beat!

WORK IN ANY LIGHT - 270-degree rotating LED light ensures you can safely jump-start or troubleshoot your vehicle even in total darkness.
COMPACT YET DURABLE - Lightweight 8.5 lbs design with SLA battery technology built to perform in cold weather—perfect for the on-the-go professional.
SMART SAFE OPERATION - Reverse polarity alarm protects you from incorrect connections, making roadside emergencies stress-free and foolproof.
INSTANT ROADSIDE RESCUE - 600 peak amps deliver reliable jump-starts for cars up to V6 engines—never get stranded again.
POWER YOUR DEVICES ANYWHERE - Triple USB ports keep your phone and gadgets charged, turning your jump starter into a portable power hub.

The Stanley J309 Portable Power Station Jump Starter packs 600 peak amps to jump-start V6 vehicles, features a triple USB charging port, and a 270° rotating LED light for nighttime use. Its reverse polarity alarm ensures safe connections, while the compact, durable design with SLA battery technology performs reliably even in cold conditions. Ideal for professionals who demand readiness and convenience on the road.

Specifications

ASIN	B001U04NCA
Amperage	300 Amps
Battery Capacity	7 Amp Hours
Battery Type	Lead Acid
Best Sellers Rank	#217,868 in Automotive ( See Top 100 in Automotive ) #527 in Jump Starters
Brand Name	STANLEY
Compatible with Vehicle Type	Passenger Car
Customer Reviews	4.1 4.1 out of 5 stars (2,779)
EU Spare Part Availability Duration	5 Years
Global Trade Identification Number	00897450002377
Included Components	Power Station
Item Dimensions D x W x H	10"D x 4.5"W x 11"H
Item Type Name	Portable Power Station Jump Starter
Item Weight	8.5 Pounds
Manufacturer	Baccus Global LLC
Manufacturer Part Number	J309
Manufacturer Warranty Description	1 year warranty
Model Number	J309
Peak Output Current	600 Amps
Specification Met	UL
UPC	897450002377
Unit Count	1.0 Count
Voltage	12 Volts

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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₩241674

Duties & taxes included

In stock

Sold byAmazon South KoreaDelivered 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 South Korea.

Secure transaction

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